{"title":"12 Inch Subwoofer Boxes","description":"\u003cdiv class=\"ai-collection-block\"\u003e\n\n\u003ch2\u003eWhy Enclosure Design Determines Subwoofer Performance\u003c\/h2\u003e\n\n\u003cp\u003eThe car audio industry has a persistent myth that subwoofer performance is primarily about the driver. The myth says a more expensive subwoofer in any enclosure will sound better than a less expensive one. The reality is more nuanced and, for buyers who understand it, more useful. A correctly tuned enclosure for a mid-tier driver will outperform an incorrectly tuned enclosure for a premium driver almost every time. The box is half the system.\u003c\/p\u003e\n\n\u003cp\u003eThis is why generic enclosures consistently disappoint. A box marketed as \"universal fit for 12 inch subwoofers\" is built to a price point and a dimensional approximation. It has internal volume somewhere in the range that works for most drivers, port dimensions that produce acceptable output across a range of tuning frequencies, and construction quality adequate for the price. It is not built for any specific driver, which means it is not optimized for any specific driver.\u003c\/p\u003e\n\n\u003cp\u003eAudio Intensity's approach starts with the driver's Thiele-Small parameters, specifically Fs (free-air resonance), Qts (total Q factor), and Vas (equivalent compliance volume). These three measurements, combined with the driver's Xmax and power handling, define the enclosure parameters that will produce the best performance. Internal net volume is calculated to spec. Port area and length are derived from the target tuning frequency. The baffle is cut to the driver's actual mounting dimensions with a CNC router, not approximated with a jigsaw. The result is an enclosure that performs the way the driver was designed to perform.\u003c\/p\u003e\n\n\u003ch2\u003eSealed 12 Inch Subwoofer Boxes\u003c\/h2\u003e\n\n\u003cp\u003eA sealed enclosure for a 12 inch subwoofer uses an airtight internal volume to control the driver's rear cone movement. The trapped air acts as a pneumatic spring, increasing the driver's effective stiffness and producing a controlled, accurate bass response with a gradual 12dB per octave roll-off below the system's resonant frequency.\u003c\/p\u003e\n\n\u003cp\u003eThe acoustic result is tight, musical bass that integrates naturally with the front stage. A sealed 12 inch enclosure doesn't call attention to itself. The bass sounds like a natural extension of the music rather than a separate event happening in the trunk. For sound quality builds, daily drivers, and systems where bass accuracy matters more than maximum output, sealed is the right design.\u003c\/p\u003e\n\n\u003cp\u003eSealed enclosures are also more forgiving of moderate volume mismatches than ported designs. A box that's slightly larger or smaller than the ideal spec still produces acceptable results with most drivers, which is why sealed is the safer choice when exact Thiele-Small parameters aren't available. That said, Audio Intensity always builds to spec. The forgiving nature of sealed design doesn't mean precision isn't worth pursuing.\u003c\/p\u003e\n\n\u003ch2\u003ePorted 12 Inch Subwoofer Boxes\u003c\/h2\u003e\n\n\u003cp\u003eA ported enclosure adds a tuned port, which is a length of pipe or slot opening, that reinforces output at a specific frequency. At and near the port tuning frequency, the port itself contributes to acoustic output alongside the cone, producing significantly higher SPL than a sealed design at the same power input. Below the tuning frequency, the port unloads the cone and output drops sharply, which is why port tuning frequency is one of the most important design decisions in a ported enclosure.\u003c\/p\u003e\n\n\u003cp\u003eFor a typical 12 inch subwoofer in a daily-use or high-output build, port tuning frequencies between 32Hz and 42Hz produce the best balance of deep extension and output efficiency. Tuning higher, toward 45-50Hz, sacrifices low-frequency extension for more output in the upper bass range, which can sound impressive in a parking lot but thin and hollow in a musical context. Tuning lower, toward 28-32Hz, maximizes sub-bass extension at the cost of upper bass output, which suits SQL competition builds where score is measured at specific low frequencies.\u003c\/p\u003e\n\n\u003cp\u003eAudio Intensity's ported enclosures for 12 inch subwoofers use large-diameter or slot ports designed to minimize port noise at high excursion. A port that's too small in cross-sectional area produces audible chuffing, which is turbulent airflow through the port, at high volume levels. This is a construction detail that generic enclosures frequently get wrong. Port area is calculated from the driver's maximum excursion and the port velocity limits that produce laminar rather than turbulent flow.\u003c\/p\u003e\n\n\u003ch2\u003eLoaded Enclosures: Driver and Box Together\u003c\/h2\u003e\n\n\u003cp\u003eSeveral entries in this collection are loaded enclosures, which are specific 12 inch subwoofers pre-mounted in matched enclosures, tuned and ready to install. This format removes the matching process entirely. The driver and enclosure have been selected and tuned together, which means the system performs as designed from the moment it's installed.\u003c\/p\u003e\n\n\u003cp\u003eLoaded enclosures make sense for buyers who want a complete solution without building a system component by component, for installations where the target driver is already known and the enclosure spec is confirmed, and for competition builds where the driver-enclosure combination has been optimized for specific scoring frequencies. Every loaded enclosure from Audio Intensity uses the same CNC-manufactured construction standards as our standalone boxes. The driver pairing doesn't change the build quality.\u003c\/p\u003e\n\n\u003ch2\u003eConstruction Standards\u003c\/h2\u003e\n\n\u003cp\u003eAll Audio Intensity enclosures are built from Langboard Elite MDF (48.5 lb\/ft³ density, 200 psi internal bond strength), the highest-grade MDF available for enclosure construction. MDF is dimensionally stable, acoustically inert, and dense enough to resist flexing under high excursion at competition power levels. Particle board and thin-wall MDF are not used regardless of cost pressure. Internal bracing is placed at calculated intervals to prevent panel resonance. All joints are glued and fastened. Terminal cups use quality binding posts that accept up to 8 AWG wire for high-current applications.\u003c\/p\u003e\n\n\u003cp\u003eThe CNC manufacturing process means every dimension is repeatable to within 0.005 inches. There is no variation between units of the same model, which means the tuning is consistent and the performance is predictable. This is the difference between manufactured and built. It's the reason Audio Intensity enclosures perform differently than anything assembled by hand to approximate dimensions.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-cta\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eNeed Help With Your 12 Inch Build?\u003c\/p\u003e\n\u003cp\u003eTalk to an SQ-judge tech directly. We'll confirm the right 12 inch subwoofer box for your driver, your install location, and your build goals.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-contact-phone\"\u003e931-563-5151\u003c\/span\u003e\u003cspan class=\"ai-contact-divider\"\u003e|\u003c\/span\u003e\u003cspan class=\"ai-contact-email\"\u003econtact@audiointensity.com\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/aside\u003e\n\n\u003cdiv class=\"ai-faq-section\"\u003e\n\n\u003ch2\u003eFrequently Asked 12 Inch Subwoofer Box Questions\u003c\/h2\u003e\n\n\u003ch3\u003eIs a 12 inch subwoofer box better sealed or ported?\u003c\/h3\u003e\n\u003cp\u003eIt depends on your priorities. Sealed produces tight, accurate bass with predictable transient response and the smaller cabinet footprint. Ported produces 3 dB more output on average, deeper extension, and more efficient use of amplifier power. For SQ-focused builds and music with detailed bass content, sealed is the right pick. For output-priority builds and bass-heavy content, ported is better. The choice isn't about which is better; it's about which fits your build goals.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the right internal volume for a 12 inch subwoofer box?\u003c\/h3\u003e\n\u003cp\u003eVolume requirements vary by driver. Most 12 inch sealed enclosures run 1.0 to 1.75 cubic feet net (after displacement of the driver and internal bracing). Most 12 inch ported enclosures run 1.5 to 2.5 cubic feet net plus port volume. Each Audio Intensity 12 inch enclosure product page lists the specific internal volume for that model. The driver manufacturer publishes a recommended sealed and ported volume; matching the enclosure to that recommendation is the most important sizing decision.\u003c\/p\u003e\n\n\u003ch3\u003eCan I run dual 12 inch subs in one enclosure?\u003c\/h3\u003e\n\u003cp\u003eYes. The dual 12 inch enclosures (E12D-S, P12D-S III-G, P12D-S AX2 Arc Audio matched, P12D-P III-G ported, M12D-S Wav N for Wavtech thinPRO12 loaded) accept two drivers wired in series or parallel depending on amplifier impedance requirements. Two dual 4 ohm 12 inch subs in parallel present a 1 ohm load. Two dual 2 ohm subs in parallel present a 0.5 ohm load (most amps won't handle this). Confirm your amplifier's stable impedance specification before wiring.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the difference between Performance and Performance Optimized 12 inch?\u003c\/h3\u003e\n\u003cp\u003ePerformance Series 12 inch enclosures are universal-fit, with internal volume calculated for the typical 12 inch driver in the standard Qts range. Performance Optimized 12 inch enclosures are tuned to specific driver models (Arc Audio, JL Audio W0\/W1\/W3) using the driver's published Thiele-Small parameters. The Performance Optimized series produces more output and tighter alignment with the matched driver. The Performance Series gives flexibility to use any driver in the size class.\u003c\/p\u003e\n\n\u003ch3\u003eWhat port tuning frequency should I use for a 12 inch ported box?\u003c\/h3\u003e\n\u003cp\u003eFor daily-use musical builds, port tuning between 32Hz and 38Hz produces the best balance of deep extension and upper bass output. For SQL competition builds, tuning shifts toward 38-45Hz to maximize output in the scored frequency range. For extreme sub-bass builds with content below 30Hz, tuning below 30Hz extends reach but requires careful subsonic filtering. The tuning frequency should be driven by the driver's characteristics and listening goals, not a generic default.\u003c\/p\u003e\n\n\u003ch3\u003eWhat amplifier do I need for a 12 inch sub?\u003c\/h3\u003e\n\u003cp\u003eMatch the amplifier's RMS output at your wired impedance to the driver's RMS rating. Most 12 inch subs run 500-1500W RMS depending on the model. A monoblock amplifier matched to the driver at the final wired impedance is the standard approach. Sealed alignments need slightly more power than ported to reach the same SPL. Always include a subsonic filter set 10Hz below t\u003c\/p\u003e\n\u003cdiv class=\"ai-sealed-xlink\"\u003e\n\u003ch2\u003eShop Sealed 12 Inch Subwoofer Boxes\u003c\/h2\u003e\n\u003cp\u003eWant the tight, accurate, SQ-focused option? See our \u003ca href=\"https:\/\/audiointensity.com\/collections\/sealed-subwoofer-boxes\" title=\"Sealed subwoofer boxes\"\u003esealed 12 inch subwoofer boxes\u003c\/a\u003e, airtight enclosures built to spec for controlled, distortion-free bass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"proline-x-e12-s-sealed-enclosure","title":"Proline X E12-S Sealed Enclosure","description":"\u003cbody\u003e\n\n\n    \u003cmeta charset=\"UTF-8\"\u003e\n    \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n    \u003ctitle\u003eProline X E12-S Single 12\" Sealed Subwoofer Enclosure - Budget Car Audio\u003c\/title\u003e\n    \u003cmeta name=\"description\" content=\"Proline X E12-S Single 12 inch Sealed Subwoofer Enclosure - American-made car audio bass solution with CNC precision and budget-friendly pricing. Perfect for upgrading your car stereo system.\"\u003e\n    \u003clink href=\"https:\/\/cdn.jsdelivr.net\/npm\/tailwindcss@2.2.19\/dist\/tailwind.min.css\" rel=\"stylesheet\"\u003e\n    \u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.jsdelivr.net\/npm\/@fortawesome\/fontawesome-free@6.4.0\/css\/all.min.css\"\u003e\n    \u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@300;400;500;600;700\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n    \u003cstyle\u003e\n        body {\n            font-family: 'Inter', sans-serif;\n        }\n        .gradient-hero {\n            background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);\n        }\n        .feature-card {\n            transition: transform 0.3s ease, box-shadow 0.3s ease;\n        }\n        .feature-card:hover {\n            transform: translateY(-5px);\n            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);\n        }\n        .spec-row:nth-child(even) {\n            background-color: #f9fafb;\n        }\n        .cta-button {\n            background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);\n            transition: all 0.3s ease;\n        }\n        .cta-button:hover {\n            background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);\n            transform: translateY(-2px);\n            box-shadow: 0 10px 20px rgba(220, 38, 38, 0.3);\n        }\n    \u003c\/style\u003e\n\n\n    \u003cdiv class=\"max-w-6xl mx-auto p-6\"\u003e\n        \n        \u003c!-- Hero Section --\u003e\n        \u003cdiv class=\"gradient-hero text-white rounded-2xl p-8 mb-8 text-center\"\u003e\n            \u003ch2 class=\"text-4xl md:text-5xl font-bold mb-4 text-white\"\u003eProline X E12-S Single 12\" Sealed Enclosure\u003c\/h2\u003e\n            \u003cp class=\"text-xl md:text-2xl mb-6 text-blue-100\"\u003ePremium Car Audio Bass Solution That Won't Break the Bank\u003c\/p\u003e\n            \u003cdiv class=\"flex justify-center items-center space-x-6 text-blue-100\"\u003e\n                \u003cdiv class=\"flex items-center\"\u003e\n                    \u003ci class=\"fas fa-flag-usa mr-2\"\u003e\u003c\/i\u003e\n                    \u003cspan class=\"font-medium\"\u003eMade in USA\u003c\/span\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"flex items-center\"\u003e\n                    \u003ci class=\"fas fa-dollar-sign mr-2\"\u003e\u003c\/i\u003e\n                    \u003cspan class=\"font-medium\"\u003eBudget Friendly\u003c\/span\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"flex items-center\"\u003e\n                    \u003ci class=\"fas fa-award mr-2\"\u003e\u003c\/i\u003e\n                    \u003cspan class=\"font-medium\"\u003e30+ Years Experience\u003c\/span\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Value Proposition --\u003e\n        \u003cdiv class=\"bg-gray-50 rounded-xl p-8 mb-8 text-center\"\u003e\n            \u003ch3 class=\"text-2xl font-bold text-gray-800 mb-4\"\u003eUncompromising Quality at an Economical Price Point\u003c\/h3\u003e\n            \u003cp class=\"text-lg text-gray-700 max-w-4xl mx-auto leading-relaxed\"\u003e\n                The \u003cstrong class=\"text-blue-600\"\u003eProline X E12-S Single 12\" Sealed Enclosure\u003c\/strong\u003e delivers unparalleled sound quality while staying budget-friendly. \n                As a cornerstone of the Proline X economy line, this sealed enclosure makes no compromises in providing excellent, deep, and clear bass output. \n                Perfect for music lovers who are conscious of their spending but refuse to compromise on audio quality.\n            \u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Key Features Grid --\u003e\n        \u003cdiv class=\"mb-8\"\u003e\n            \u003ch3 class=\"text-3xl font-bold text-gray-800 mb-8 text-center\"\u003eWhy Choose the E12-S?\u003c\/h3\u003e\n            \u003cdiv class=\"grid md:grid-cols-2 lg:grid-cols-3 gap-6\"\u003e\n                \n                \u003cdiv class=\"feature-card bg-white rounded-xl p-6 shadow-lg border border-gray-100\"\u003e\n                    \u003cdiv class=\"text-blue-500 text-3xl mb-4\"\u003e\n                        \u003ci class=\"fas fa-flag-usa\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"text-xl font-semibold text-gray-800 mb-3\"\u003eHand-Built in USA\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600\"\u003eEvery enclosure is hand-built by skilled artisans in the United States, adhering to stringent quality controls and Made in USA standards.\u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"feature-card bg-white rounded-xl p-6 shadow-lg border border-gray-100\"\u003e\n                    \u003cdiv class=\"text-green-500 text-3xl mb-4\"\u003e\n                        \u003ci class=\"fas fa-cut\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"text-xl font-semibold text-gray-800 mb-3\"\u003ePrecision CNC Cut\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600\"\u003eFeatures precision CNC cut MDF Ultralight material for maximum durability and optimized sound performance with seamless connections.\u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"feature-card bg-white rounded-xl p-6 shadow-lg border border-gray-100\"\u003e\n                    \u003cdiv class=\"text-purple-500 text-3xl mb-4\"\u003e\n                        \u003ci class=\"fas fa-cog\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"text-xl font-semibold text-gray-800 mb-3\"\u003eSmart Engineering\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600\"\u003eSingle internal brace and interlocking design maintains structural integrity while minimizing sound distortion for clearer bass output.\u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"feature-card bg-white rounded-xl p-6 shadow-lg border border-gray-100\"\u003e\n                    \u003cdiv class=\"text-red-500 text-3xl mb-4\"\u003e\n                        \u003ci class=\"fas fa-paint-brush\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"text-xl font-semibold text-gray-800 mb-3\"\u003ePremium Finish\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600\"\u003eAesthetically pleasing rounded external edges with sleek grey trunk liner that integrates seamlessly into any car interior.\u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"feature-card bg-white rounded-xl p-6 shadow-lg border border-gray-100\"\u003e\n                    \u003cdiv class=\"text-yellow-500 text-3xl mb-4\"\u003e\n                        \u003ci class=\"fas fa-plug\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"text-xl font-semibold text-gray-800 mb-3\"\u003eQuality Terminals\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600\"\u003eHigh-quality terminal cups ensure reduced signal loss and improved overall sound quality with secure, reliable connections.\u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"feature-card bg-white rounded-xl p-6 shadow-lg border border-gray-100\"\u003e\n                    \u003cdiv class=\"text-indigo-500 text-3xl mb-4\"\u003e\n                        \u003ci class=\"fas fa-weight-hanging\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"text-xl font-semibold text-gray-800 mb-3\"\u003eUltralight Design\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600\"\u003eMDF Ultralight construction provides the perfect balance of strength and weight, delivering efficient sound resonance.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Technical Specifications --\u003e\n        \u003cdiv class=\"bg-white rounded-xl shadow-lg border border-gray-200 p-8 mb-8\"\u003e\n            \u003ch3 class=\"text-3xl font-bold text-gray-800 mb-6 text-center\"\u003eComplete Specifications\u003c\/h3\u003e\n            \u003cdiv class=\"overflow-x-auto\"\u003e\n                \u003ctable class=\"w-full\"\u003e\n                    \u003cthead\u003e\n                        \u003ctr class=\"border-b-2 border-gray-200\"\u003e\n                            \u003cth class=\"text-left py-4 px-4 font-semibold text-gray-800 text-lg\"\u003eSpecification\u003c\/th\u003e\n                            \u003cth class=\"text-left py-4 px-4 font-semibold text-gray-800 text-lg\"\u003eDetails\u003c\/th\u003e\n                        \u003c\/tr\u003e\n                    \u003c\/thead\u003e\n                    \u003ctbody class=\"text-gray-700\"\u003e\n                        \u003ctr class=\"spec-row border-b border-gray-100\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eEnclosure Type\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003eSealed (Acoustic Suspension)\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                        \u003ctr class=\"spec-row border-b border-gray-100\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eSubwoofer Capacity\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003eSingle 12\" driver\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                        \u003ctr class=\"spec-row border-b border-gray-100\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eInternal Volume\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003e1.1 cubic feet\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                        \u003ctr class=\"spec-row border-b border-gray-100\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eExternal Dimensions\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003e19\" W × 13.5\" D × 10.5\" H\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                        \u003ctr class=\"spec-row border-b border-gray-100\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eConstruction Material\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003eCNC-cut MDF Ultralight\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                        \u003ctr class=\"spec-row border-b border-gray-100\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eInternal Bracing\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003eSingle internal brace\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                        \u003ctr class=\"spec-row border-b border-gray-100\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eFinish\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003eGrey trunk liner\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                        \u003ctr class=\"spec-row\"\u003e\n                            \u003ctd class=\"py-4 px-4 font-medium\"\u003eManufacturing\u003c\/td\u003e\n                            \u003ctd class=\"py-4 px-4\"\u003eHand-built in USA (Northern California)\u003c\/td\u003e\n                        \u003c\/tr\u003e\n                    \u003c\/tbody\u003e\n                \u003c\/table\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Perfect Applications --\u003e\n        \u003cdiv class=\"bg-blue-50 rounded-xl p-8 mb-8\"\u003e\n            \u003ch3 class=\"text-3xl font-bold text-gray-800 mb-6 text-center\"\u003ePerfect For These Applications\u003c\/h3\u003e\n            \u003cdiv class=\"grid md:grid-cols-2 gap-6\"\u003e\n                \u003cdiv class=\"space-y-4\"\u003e\n                    \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                        \u003cdiv class=\"bg-green-500 text-white rounded-full p-2 w-8 h-8 flex items-center justify-center mr-4 flex-shrink-0\"\u003e\n                            \u003ci class=\"fas fa-check text-sm\"\u003e\u003c\/i\u003e\n                        \u003c\/div\u003e\n                        \u003cspan class=\"font-medium\"\u003eBudget-conscious audiophiles seeking quality bass\u003c\/span\u003e\n                    \u003c\/div\u003e\n                    \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                        \u003cdiv class=\"bg-green-500 text-white rounded-full p-2 w-8 h-8 flex items-center justify-center mr-4 flex-shrink-0\"\u003e\n                            \u003ci class=\"fas fa-check text-sm\"\u003e\u003c\/i\u003e\n                        \u003c\/div\u003e\n                        \u003cspan class=\"font-medium\"\u003eFirst-time car audio upgraders\u003c\/span\u003e\n                    \u003c\/div\u003e\n                    \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                        \u003cdiv class=\"bg-green-500 text-white rounded-full p-2 w-8 h-8 flex items-center justify-center mr-4 flex-shrink-0\"\u003e\n                            \u003ci class=\"fas fa-check text-sm\"\u003e\u003c\/i\u003e\n                        \u003c\/div\u003e\n                        \u003cspan class=\"font-medium\"\u003eCompact car installations with space constraints\u003c\/span\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"space-y-4\"\u003e\n                    \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                        \u003cdiv class=\"bg-green-500 text-white rounded-full p-2 w-8 h-8 flex items-center justify-center mr-4 flex-shrink-0\"\u003e\n                            \u003ci class=\"fas fa-check text-sm\"\u003e\u003c\/i\u003e\n                        \u003c\/div\u003e\n                        \u003cspan class=\"font-medium\"\u003eDaily drivers needing reliable bass performance\u003c\/span\u003e\n                    \u003c\/div\u003e\n                    \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                        \u003cdiv class=\"bg-green-500 text-white rounded-full p-2 w-8 h-8 flex items-center justify-center mr-4 flex-shrink-0\"\u003e\n                            \u003ci class=\"fas fa-check text-sm\"\u003e\u003c\/i\u003e\n                        \u003c\/div\u003e\n                        \u003cspan class=\"font-medium\"\u003eDIY installers wanting plug-and-play solutions\u003c\/span\u003e\n                    \u003c\/div\u003e\n                    \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                        \u003cdiv class=\"bg-green-500 text-white rounded-full p-2 w-8 h-8 flex items-center justify-center mr-4 flex-shrink-0\"\u003e\n                            \u003ci class=\"fas fa-check text-sm\"\u003e\u003c\/i\u003e\n                        \u003c\/div\u003e\n                        \u003cspan class=\"font-medium\"\u003eSound quality competitions (entry level)\u003c\/span\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Installation Tips --\u003e\n        \u003cdiv class=\"bg-gray-50 rounded-xl p-8 mb-8\"\u003e\n            \u003ch3 class=\"text-2xl font-bold text-gray-800 mb-6 text-center\"\u003eProfessional Installation Tips\u003c\/h3\u003e\n            \u003cdiv class=\"grid md:grid-cols-3 gap-6\"\u003e\n                \u003cdiv class=\"text-center\"\u003e\n                    \u003cdiv class=\"bg-blue-500 text-white rounded-full p-4 w-16 h-16 flex items-center justify-center mx-auto mb-4\"\u003e\n                        \u003ci class=\"fas fa-bolt text-xl\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"font-semibold text-gray-800 mb-2\"\u003eAmplifier Matching\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600 text-sm\"\u003ePair with 300-600W RMS amplifiers for optimal performance\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"text-center\"\u003e\n                    \u003cdiv class=\"bg-purple-500 text-white rounded-full p-4 w-16 h-16 flex items-center justify-center mx-auto mb-4\"\u003e\n                        \u003ci class=\"fas fa-map-marker-alt text-xl\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"font-semibold text-gray-800 mb-2\"\u003eOptimal Placement\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600 text-sm\"\u003ePosition in trunk corners for maximum bass extension\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"text-center\"\u003e\n                    \u003cdiv class=\"bg-green-500 text-white rounded-full p-4 w-16 h-16 flex items-center justify-center mx-auto mb-4\"\u003e\n                        \u003ci class=\"fas fa-plug text-xl\"\u003e\u003c\/i\u003e\n                    \u003c\/div\u003e\n                    \u003ch4 class=\"font-semibold text-gray-800 mb-2\"\u003eWiring Best Practices\u003c\/h4\u003e\n                    \u003cp class=\"text-gray-600 text-sm\"\u003eUse 12-14 AWG speaker wire for best power transfer\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Audio Intensity Advantage --\u003e\n        \u003cdiv class=\"bg-white rounded-xl shadow-lg border border-gray-200 p-8 mb-8\"\u003e\n            \u003ch3 class=\"text-3xl font-bold text-gray-800 mb-6 text-center\"\u003eThe Audio Intensity Advantage\u003c\/h3\u003e\n            \u003cdiv class=\"grid md:grid-cols-2 gap-8 items-center\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"text-lg text-gray-700 mb-6 leading-relaxed\"\u003e\n                        When you choose Proline X, you're not just buying an enclosure – you're investing in \u003cstrong class=\"text-blue-600\"\u003e30+ years of audio innovation\u003c\/strong\u003e. \n                        Our veteran-owned company has built a reputation for delivering professional-grade car audio solutions at accessible prices.\n                    \u003c\/p\u003e\n                    \u003cdiv class=\"space-y-3\"\u003e\n                        \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                            \u003ci class=\"fas fa-star text-yellow-500 mr-3\"\u003e\u003c\/i\u003e\n                            \u003cspan class=\"font-medium\"\u003eHand-built quality control in every enclosure\u003c\/span\u003e\n                        \u003c\/div\u003e\n                        \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                            \u003ci class=\"fas fa-star text-yellow-500 mr-3\"\u003e\u003c\/i\u003e\n                            \u003cspan class=\"font-medium\"\u003eCAD-optimized designs for maximum performance\u003c\/span\u003e\n                        \u003c\/div\u003e\n                        \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                            \u003ci class=\"fas fa-star text-yellow-500 mr-3\"\u003e\u003c\/i\u003e\n                            \u003cspan class=\"font-medium\"\u003eAmerican manufacturing supporting local communities\u003c\/span\u003e\n                        \u003c\/div\u003e\n                        \u003cdiv class=\"flex items-center text-gray-800\"\u003e\n                            \u003ci class=\"fas fa-star text-yellow-500 mr-3\"\u003e\u003c\/i\u003e\n                            \u003cspan class=\"font-medium\"\u003eUnmatched value in the car audio industry\u003c\/span\u003e\n                        \u003c\/div\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"text-center\"\u003e\n                    \u003cdiv class=\"bg-gradient-to-br from-blue-500 to-purple-600 text-white rounded-2xl p-8\"\u003e\n                        \u003ch4 class=\"text-2xl font-bold mb-4 text-white\"\u003e30+ Years\u003c\/h4\u003e\n                        \u003cp class=\"text-blue-100 mb-4\"\u003eof Audio Engineering Excellence\u003c\/p\u003e\n                        \u003cdiv class=\"flex justify-center space-x-4 text-blue-100\"\u003e\n                            \u003cdiv class=\"text-center\"\u003e\n                                \u003cdiv class=\"text-2xl font-bold text-white\"\u003e100%\u003c\/div\u003e\n                                \u003cdiv class=\"text-sm\"\u003eMade in USA\u003c\/div\u003e\n                            \u003c\/div\u003e\n                            \u003cdiv class=\"text-center\"\u003e\n                                \u003cdiv class=\"text-2xl font-bold text-white\"\u003e1000s\u003c\/div\u003e\n                                \u003cdiv class=\"text-sm\"\u003eHappy Customers\u003c\/div\u003e\n                            \u003c\/div\u003e\n                        \u003c\/div\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Call to Action --\u003e\n        \u003cdiv class=\"bg-gradient-to-right from-gray-800 to-gray-900 text-white rounded-2xl p-8 text-center mb-8\"\u003e\n            \u003ch3 class=\"text-3xl font-bold mb-4 text-white\"\u003eReady to Upgrade Your Car Audio Experience?\u003c\/h3\u003e\n            \u003cp class=\"text-xl mb-6 text-gray-200\"\u003eThe Proline X E12-S is your gateway to professional-grade bass performance without the professional-grade price tag.\u003c\/p\u003e\n            \u003cbutton class=\"cta-button text-white font-bold py-4 px-8 rounded-xl text-lg inline-flex items-center\"\u003e\n                \u003ci class=\"fas fa-shopping-cart mr-3\"\u003e\u003c\/i\u003e\n                Add to Cart - Upgrade Today!\n            \u003c\/button\u003e\n            \u003cdiv class=\"mt-6 flex justify-center items-center space-x-8 text-gray-300\"\u003e\n                \u003cdiv class=\"flex items-center\"\u003e\n                    \u003ci class=\"fas fa-shield-alt mr-2\"\u003e\u003c\/i\u003e\n                    \u003cspan\u003e1-Year Warranty\u003c\/span\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"flex items-center\"\u003e\n                    \u003ci class=\"fas fa-shipping-fast mr-2\"\u003e\u003c\/i\u003e\n                    \u003cspan\u003eFast Shipping\u003c\/span\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"flex items-center\"\u003e\n                    \u003ci class=\"fas fa-phone mr-2\"\u003e\u003c\/i\u003e\n                    \u003cspan\u003eExpert Support\u003c\/span\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Important Notes --\u003e\n        \u003cdiv class=\"bg-yellow-50 border-l-4 border-yellow-400 p-6 rounded-r-xl mb-8\"\u003e\n            \u003ch4 class=\"text-lg font-semibold text-gray-800 mb-3 flex items-center\"\u003e\n                \u003ci class=\"fas fa-exclamation-triangle text-yellow-500 mr-2\"\u003e\u003c\/i\u003e\n                Important Information\n            \u003c\/h4\u003e\n            \u003cul class=\"space-y-2 text-gray-700\"\u003e\n                \u003cli class=\"flex items-start\"\u003e\n                    \u003ci class=\"fas fa-info-circle text-blue-500 mr-2 mt-1 flex-shrink-0\"\u003e\u003c\/i\u003e\n                    \u003cspan\u003e\u003cstrong\u003eSubwoofer sold separately\u003c\/strong\u003e - This listing is for the enclosure only\u003c\/span\u003e\n                \u003c\/li\u003e\n                \u003cli class=\"flex items-start\"\u003e\n                    \u003ci class=\"fas fa-info-circle text-blue-500 mr-2 mt-1 flex-shrink-0\"\u003e\u003c\/i\u003e\n                    \u003cspan\u003e\u003cstrong\u003eProfessional installation recommended\u003c\/strong\u003e for optimal performance and warranty coverage\u003c\/span\u003e\n                \u003c\/li\u003e\n                \u003cli class=\"flex items-start\"\u003e\n                    \u003ci class=\"fas fa-info-circle text-blue-500 mr-2 mt-1 flex-shrink-0\"\u003e\u003c\/i\u003e\n                    \u003cspan\u003e\u003cstrong\u003ePair with other Proline X components\u003c\/strong\u003e for maximum audio system synergy\u003c\/span\u003e\n                \u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- Footer Summary --\u003e\n        \u003cdiv class=\"text-center border-t border-gray-200 pt-8\"\u003e\n            \u003ch4 class=\"text-2xl font-bold text-gray-800 mb-4\"\u003eDon't Compromise on Quality\u003c\/h4\u003e\n            \u003cp class=\"text-lg text-gray-600 max-w-3xl mx-auto\"\u003e\n                Make the smart choice with the \u003cstrong class=\"text-blue-600\"\u003eProline X E12-S Single 12\" Sealed Enclosure\u003c\/strong\u003e. \n                Experience the perfect blend of affordability, American-made quality, and professional audio performance.\n            \u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n\u003c\/body\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":40323726966873,"sku":"E12-S","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/proline-x-e12-s-sealed-enclosurecloseoutproline-x-134876.jpg?v=1761969114"},{"product_id":"proline-x-p12-s-single-12-sealed-subwoofer-enclosure-v3","title":"Proline X P12-S | Single 12\" Sealed Subwoofer Enclosure | V3","description":"\u003cstyle\u003e\n .px-desc {\n font-family: 'Helvetica Neue', Arial, sans-serif;\n line-height: 1.8;\n color: #1e293b;\n max-width: 1200px;\n margin: 0 auto;\n background: #ffffff;\n }\n\n .px-hero {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-hero .px-title {\n font-size: 2.6em;\n font-weight: 800;\n text-transform: uppercase;\n letter-spacing: 2px;\n margin: 0 0 10px 0;\n color: white;\n }\n\n .px-hero .px-subtitle {\n font-size: 1.2em;\n font-weight: 300;\n opacity: 0.9;\n margin: 0 0 30px 0;\n }\n\n .px-badges {\n display: flex;\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px;\n margin-top: 20px;\n }\n\n .px-badge {\n background: rgba(6, 182, 212, 0.2);\n border: 1px solid #06b6d4;\n color: #67e8f9;\n padding: 8px 20px;\n border-radius: 20px;\n font-size: 0.9em;\n font-weight: 600;\n letter-spacing: 0.5px;\n }\n\n .px-section {\n padding: 50px 40px;\n border-bottom: 1px solid #e2e8f0;\n background: #ffffff;\n }\n\n .px-section:nth-child(even) {\n background: #f0f9ff;\n }\n\n .px-section h2 {\n color: #0e7490;\n font-size: 2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n padding-bottom: 12px;\n border-bottom: 3px solid #06b6d4;\n }\n\n .px-section h3 {\n color: #0f172a;\n font-size: 1.4em;\n font-weight: 600;\n margin: 30px 0 15px 0;\n }\n\n .px-section p {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 18px;\n }\n\n .px-section ul {\n margin: 15px 0;\n padding-left: 25px;\n }\n\n .px-section li {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 10px;\n line-height: 1.7;\n }\n\n .px-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 24px;\n margin: 30px 0;\n }\n\n .px-card {\n background: #ffffff;\n border: 1px solid #e2e8f0;\n border-top: 4px solid #06b6d4;\n border-radius: 6px;\n padding: 24px;\n }\n\n .px-card h4 {\n color: #0e7490;\n font-size: 1.15em;\n font-weight: 700;\n margin: 0 0 12px 0;\n }\n\n .px-card p {\n font-size: 1em;\n color: #475569;\n margin: 0;\n line-height: 1.7;\n }\n\n .px-highlight {\n background: #f0f9ff;\n border-left: 5px solid #06b6d4;\n padding: 24px 28px;\n margin: 28px 0;\n border-radius: 0 6px 6px 0;\n }\n\n .px-highlight h3 {\n color: #0e7490;\n margin: 0 0 12px 0;\n font-size: 1.2em;\n }\n\n .px-highlight p {\n margin-bottom: 10px;\n color: #1e293b;\n }\n\n .px-cta {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-cta h2 {\n font-size: 2.2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n color: white;\n border: none;\n padding: 0;\n }\n\n .px-cta p {\n font-size: 1.15em;\n opacity: 0.92;\n max-width: 800px;\n margin: 0 auto 20px auto;\n color: white;\n }\n\n .px-driver-link {\n display: inline-block;\n background: #f0f9ff;\n border: 2px solid #06b6d4;\n border-radius: 6px;\n padding: 16px 24px;\n margin: 10px 10px 10px 0;\n text-decoration: none;\n color: #0e7490;\n font-weight: 700;\n font-size: 1em;\n transition: all 0.2s ease;\n }\n\n .px-driver-link:hover {\n background: #06b6d4;\n color: white;\n }\n\n @media (max-width: 768px) {\n .px-hero { padding: 40px 20px; }\n .px-hero .px-title { font-size: 1.8em; }\n .px-section { padding: 30px 20px; }\n .px-section h2 { font-size: 1.6em; }\n .px-grid { grid-template-columns: 1fr; }\n .px-cta { padding: 40px 20px; }\n .px-cta h2 { font-size: 1.6em; }\n }\n\u003c\/style\u003e\n\n\u003cdiv class=\"px-desc\"\u003e\n\n \u003c!-- Hero --\u003e\n \u003cdiv class=\"px-hero\"\u003e\n \u003cp class=\"px-title\"\u003eProline X P12-S\u003c\/p\u003e\n \u003cp class=\"px-subtitle\"\u003eSingle 12\" Sealed Subwoofer Enclosure | V3\u003c\/p\u003e\n \u003cdiv class=\"px-badges\"\u003e\n \u003cspan class=\"px-badge\"\u003e1.25 ft³ Net\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003eSealed Alignment\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003e10\" Max Depth\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003e0.75\" Single Baffle\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Introduction --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eAccurate 12\" Bass. Compact Enough to Work in Most Vehicles.\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eProline X P12-S\u003c\/strong\u003e is a single 12\" sealed enclosure built for installs where accuracy and a controlled response curve are the priority. The 12\" driver in sealed alignment produces the most balanced bass profile in the Performance Series lineup. Enough output to carry the full bass load in a daily driver system, enough low-frequency extension to cover virtually all musical content, and enough transient accuracy to integrate cleanly with a front stage without requiring heavy DSP correction. No port resonance. No tuning peak. No frequency-specific coloration.\u003c\/p\u003e\n \u003cp\u003eAt \u003cstrong\u003e19.5\" wide, 14.5\" tall, and 11.5\" deep\u003c\/strong\u003e, the P12-S fits in most standard trunk setups without requiring custom fabrication. The \u003cstrong\u003e10\" max mounting depth\u003c\/strong\u003e is one of the deeper specifications in the single 12\" sealed category. It covers high-excursion SQ-oriented motors that exceed the depth limit of shallower 12\" sealed boxes and opens up the compatible driver list considerably.\u003c\/p\u003e\n \u003cp\u003eEvery panel is CNC-cut from \u003cstrong\u003eLangboard Elite MDF\u003c\/strong\u003e to exact internal volume and assembled by hand in our Tennessee facility. A single recessed \u003cstrong\u003eABS\/Carbon Fiber Composite terminal cup\u003c\/strong\u003e handles wiring, pre-wired with \u003cstrong\u003e12g OFC speaker wire\u003c\/strong\u003e. Finish options are Dark Gray Trunkliner or Plush Black. Shipping is included.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- Why Sealed --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eWhy Sealed for a 12\" Daily or SQ Build\u003c\/h2\u003e\n \u003cp\u003eThe 12\" driver in sealed alignment is the most versatile bass configuration in car audio. It produces enough output for daily high-volume listening, enough low-frequency extension to reach the bottom of virtually any musical content, and a response profile flat enough to integrate cleanly with almost any front stage. For installs running a Goldhorn DSP or any active processor, sealed alignment is the preferred format, the predictable rolloff responds accurately to DSP correction and gives you full control over the final response without fighting a ported tuning peak.\u003c\/p\u003e\n \u003cp\u003eAt \u003cstrong\u003e1.25 ft³ net\u003c\/strong\u003e, the P12-S places most standard 12\" drivers in the middle of their recommended sealed range. No damping material required. No volume correction needed. The enclosure is correctly sized for the driver category, not undersized to hit a compact target and not oversized to inflate the spec sheet.\u003c\/p\u003e\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eTransient Accuracy\u003c\/h4\u003e\n \u003cp\u003eSealed alignment preserves the start-stop precision that produces tight, musical bass. Notes have distinct attack and decay. The P12-S produces low frequencies that integrate with the front stage rather than competing with it, the bass is part of the music, not a separate event in the trunk.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eFlat, Predictable Response\u003c\/h4\u003e\n \u003cp\u003eNo port resonance. No tuning peak. No frequency-specific coloration. The P12-S produces a smooth, controlled rolloff below resonance that integrates cleanly with any front stage and responds accurately to DSP equalization and bass boost.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003e10\" Max Mounting Depth\u003c\/h4\u003e\n \u003cp\u003eOne of the deeper specs in the single 12\" sealed category. High-excursion SQ-oriented motors that exceed the depth limit of shallower 12\" sealed boxes are viable here. The driver list for the P12-S includes drivers that most single 12\" sealed enclosures on the market cannot physically accommodate.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDSP-Friendly Alignment\u003c\/h4\u003e\n \u003cp\u003eSealed enclosures exhibit a predictable 12 dB\/octave rolloff that responds accurately to DSP bass boost and crossover adjustments. Running a Goldhorn DSP or any active processor? Sealed is the alignment that gives you the most control over the final response.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Construction --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eConstruction: The Proline X Standard on Every Panel\u003c\/h2\u003e\n \u003cp\u003eThe P12-S uses the same construction methodology as every enclosure in the Proline X Performance Series. Langboard Elite MDF. V-groove and dado joinery. In-house terminal cup. Hand-assembled in Tennessee. The variables are dimensions, volume, and alignment. The build quality is consistent across the entire lineup.\u003c\/p\u003e\n\n \u003ch3\u003eLangboard Elite MDF, Named, Verified, Documented\u003c\/h3\u003e\n \u003cp\u003eEvery panel is cut from \u003cstrong\u003eLangboard Elite MDF: 3\/4\" (18mm)\u003c\/strong\u003e, a named, mill-documented panel stock produced in the United States. The specifications below are pulled directly from Langboard's published mill data.\u003c\/p\u003e\n\n \u003cdiv class=\"px-highlight\"\u003e\n \u003ch3\u003eLangboard Elite: Published Mill Data\u003c\/h3\u003e\n \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³, higher density means less porosity, better screw retention, and reduced resonance\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi, resistance to delamination under sustained bass pressure cycling\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi, panel stiffness under load; less flex means less resonance\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs, baffle hardware stays locked under vibration\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs, joint integrity at every panel edge connection\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n \u003cp\u003eEvery panel joint uses \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. For a sealed enclosure, joint integrity is the most important construction variable, a single air leak degrades output and response accuracy across the entire bass range. Every seam on the P12-S is mechanically locked before adhesive is applied. The box does not leak. The response does not change over time as joints loosen.\u003c\/p\u003e\n\n \u003ch3\u003eIn-House ABS\/Carbon Fiber Composite Terminal Cup\u003c\/h3\u003e\n \u003cp\u003eThe terminal cup is built in-house at our Tennessee facility. The \u003cstrong\u003eABS\/Carbon Fiber Composite recessed cup\u003c\/strong\u003e features stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with \u003cstrong\u003e12g OFC speaker wire\u003c\/strong\u003e. The recessed mount protects terminals from cargo contact. Copper ring terminals provide a clean, corrosion-resistant connection that does not loosen under vibration over time.\u003c\/p\u003e\n\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n \u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers. Consistent geometry, no hand-cut variance, no gaps at the joints. The internal volume of every P12-S is identical to spec across every unit produced.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n \u003cp\u003eEvery enclosure is hand-assembled at our Tennessee facility and inspected before it ships. No overseas manufacturing. No batch assembly shortcuts.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDark Gray Trunkliner or Plush Black\u003c\/h4\u003e\n \u003cp\u003eBoth finish options are professionally applied. Dark Gray Trunkliner blends with factory trunk materials for a stealth appearance. Plush Black delivers the traditional aftermarket look. Both are durably bonded for long-term wear.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eShipping Included\u003c\/h4\u003e\n \u003cp\u003eNo freight charges at checkout. The price you see is the price you pay. The enclosure ships assembled and ready to install.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Fitment --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eFitment Guide\u003c\/h2\u003e\n \u003cp\u003eThe P12-S is one of the more compact single 12\" sealed enclosures in the Performance Series. At \u003cstrong\u003e19.5\"W x 14.5\"H x 11.5\"D\u003c\/strong\u003e it fits in most standard sedan and truck trunk setups. The 11.5\" depth is compact for a 12\" sealed enclosure: most trunks that will fit a 12\" at all will fit the P12-S without custom fabrication.\u003c\/p\u003e\n\n \u003ch3\u003eDimensional Specifications\u003c\/h3\u003e\n \u003cdiv class=\"px-highlight\"\u003e\n \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 19.5\" W x 14.5\" H x 11.5\" D\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 1.25 ft³\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e N\/A, Sealed\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eSubwoofer Cutout:\u003c\/strong\u003e 11.15\"\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eMax Mounting Depth:\u003c\/strong\u003e 10\"\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eFront Panel Thickness:\u003c\/strong\u003e 0.75\" Single Baffle\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eDriver Compatibility\u003c\/h3\u003e\n \u003cp\u003eThe P12-S accommodates any 12\" subwoofer with a cutout diameter at or below \u003cstrong\u003e11.15\"\u003c\/strong\u003e and a mounting depth at or below \u003cstrong\u003e10\"\u003c\/strong\u003e. Verify both dimensions against your driver's published specifications before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eCompatible Drivers\u003c\/h3\u003e\n \u003cp\u003eThe following drivers are available from Audio Intensity and are compatible with the P12-S:\u003c\/p\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb2-series\"\u003eProdigy NB2-12D4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/image-dynamics-id12-v4-12-inch-subwoofer\"\u003eImage Dynamics ID12 V4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb3-series\"\u003eProdigy NB3-12D4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/arc-audio-arc-series-12-subwoofer\"\u003eArc Audio ARC12 D2 \u003c\/a\u003e\n \u003cp style=\"font-size:0.9em; color:#64748b; margin-top:12px;\"\u003eAlways verify cutout diameter and mounting depth against your specific driver's published specifications before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eStandard Trunk Build\u003c\/h4\u003e\n \u003cp\u003eAt 19.5\" wide and 11.5\" deep, the P12-S fits in most standard sedan and truck trunk configurations without custom fabrication. The compact depth makes it one of the more versatile single 12\" sealed options in the Performance Series.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eSQ Competition Builds\u003c\/h4\u003e\n \u003cp\u003eSealed alignment, 1.25 ft³ net volume, and 10\" max mounting depth make the P12-S the correct enclosure for SQ competition builds running high-excursion 12\" drivers where accuracy and front stage integration are the priority.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDSP-Controlled Systems\u003c\/h4\u003e\n \u003cp\u003eThe flat, predictable sealed rolloff makes the P12-S the preferred enclosure format for systems running a Goldhorn DSP or any active processor. Sealed alignment responds accurately to DSP correction and equalization. You tune the response rather than fight the box.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDaily Driver Systems\u003c\/h4\u003e\n \u003cp\u003eEnough output for real bass impact at daily listening levels, accurate enough to work across all music genres without sounding genre-specific. The P12-S is a strong daily driver enclosure for listeners who want bass that sounds like bass, not a resonance.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- CTA --\u003e\n \u003cdiv class=\"px-cta\"\u003e\n \u003ch2\u003eAccurate 12\" Bass. Tennessee-Built. Shipping Included.\u003c\/h2\u003e\n \u003cp\u003eThe Proline X P12-S is a single 12\" sealed enclosure built to a spec, not a price point. Langboard Elite MDF. V-groove and dado joinery. 10\" max mounting depth. In-house terminal cup. Hand-assembled in Tennessee and inspected before it ships.\u003c\/p\u003e\n \u003cp\u003eIf you need accurate, controlled 12\" bass in a compact footprint. This is the correct enclosure. \u003cstrong\u003e$179.99 Dark Gray Trunkliner. $189.99 Plush Black.\u003c\/strong\u003e Shipping included.\u003c\/p\u003e\n \u003c\/div\u003e\n\n\u003cp class=\"ai-sealed-xlink\"\u003eBrowse the full \u003ca href=\"https:\/\/audiointensity.com\/collections\/sealed-subwoofer-boxes\" title=\"Sealed subwoofer boxes\"\u003esealed 12 inch subwoofer boxes\u003c\/a\u003e collection, driver-matched and universal-fit sealed enclosures CNC-cut in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dark Grey Trunk Liner","offer_id":42255690694745,"sku":"P12-S G","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black Carpet","offer_id":42255690727513,"sku":"P12-S B","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-performance-p12-s-sealed-enclosure-for-12-subwooferssubwoofer-enclosuresproline-x-778318.jpg?v=1761969140"},{"product_id":"proline-x-p12d-s-dual-12-sealed-subwoofer-enclosure-v3","title":"Proline X P12D-S | Dual 12\" Sealed Subwoofer Enclosure | V3","description":"\u003cstyle\u003e\n .px-desc {\n font-family: 'Helvetica Neue', Arial, sans-serif;\n line-height: 1.8;\n color: #1e293b;\n max-width: 1200px;\n margin: 0 auto;\n background: #ffffff;\n }\n\n .px-hero {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-hero .px-title {\n font-size: 2.6em;\n font-weight: 800;\n text-transform: uppercase;\n letter-spacing: 2px;\n margin: 0 0 10px 0;\n color: white;\n }\n\n .px-hero .px-subtitle {\n font-size: 1.2em;\n font-weight: 300;\n opacity: 0.9;\n margin: 0 0 30px 0;\n }\n\n .px-badges {\n display: flex;\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px;\n margin-top: 20px;\n }\n\n .px-badge {\n background: rgba(6, 182, 212, 0.2);\n border: 1px solid #06b6d4;\n color: #67e8f9;\n padding: 8px 20px;\n border-radius: 20px;\n font-size: 0.9em;\n font-weight: 600;\n letter-spacing: 0.5px;\n }\n\n .px-section {\n padding: 50px 40px;\n border-bottom: 1px solid #e2e8f0;\n background: #ffffff;\n }\n\n .px-section:nth-child(even) {\n background: #f0f9ff;\n }\n\n .px-section h2 {\n color: #0e7490;\n font-size: 2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n padding-bottom: 12px;\n border-bottom: 3px solid #06b6d4;\n }\n\n .px-section h3 {\n color: #0f172a;\n font-size: 1.4em;\n font-weight: 600;\n margin: 30px 0 15px 0;\n }\n\n .px-section p {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 18px;\n }\n\n .px-section ul {\n margin: 15px 0;\n padding-left: 25px;\n }\n\n .px-section li {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 10px;\n line-height: 1.7;\n }\n\n .px-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 24px;\n margin: 30px 0;\n }\n\n .px-card {\n background: #ffffff;\n border: 1px solid #e2e8f0;\n border-top: 4px solid #06b6d4;\n border-radius: 6px;\n padding: 24px;\n }\n\n .px-card h4 {\n color: #0e7490;\n font-size: 1.15em;\n font-weight: 700;\n margin: 0 0 12px 0;\n }\n\n .px-card p {\n font-size: 1em;\n color: #475569;\n margin: 0;\n line-height: 1.7;\n }\n\n .px-highlight {\n background: #f0f9ff;\n border-left: 5px solid #06b6d4;\n padding: 24px 28px;\n margin: 28px 0;\n border-radius: 0 6px 6px 0;\n }\n\n .px-highlight h3 {\n color: #0e7490;\n margin: 0 0 12px 0;\n font-size: 1.2em;\n }\n\n .px-highlight p {\n margin-bottom: 10px;\n color: #1e293b;\n }\n\n .px-cta {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-cta h2 {\n font-size: 2.2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n color: white;\n border: none;\n padding: 0;\n }\n\n .px-cta p {\n font-size: 1.15em;\n opacity: 0.92;\n max-width: 800px;\n margin: 0 auto 20px auto;\n color: white;\n }\n\n .px-driver-link {\n display: inline-block;\n background: #f0f9ff;\n border: 2px solid #06b6d4;\n border-radius: 6px;\n padding: 16px 24px;\n margin: 10px 10px 10px 0;\n text-decoration: none;\n color: #0e7490;\n font-weight: 700;\n font-size: 1em;\n transition: all 0.2s ease;\n }\n\n .px-driver-link:hover {\n background: #06b6d4;\n color: white;\n }\n\n @media (max-width: 768px) {\n .px-hero { padding: 40px 20px; }\n .px-hero .px-title { font-size: 1.8em; }\n .px-section { padding: 30px 20px; }\n .px-section h2 { font-size: 1.6em; }\n .px-grid { grid-template-columns: 1fr; }\n .px-cta { padding: 40px 20px; }\n .px-cta h2 { font-size: 1.6em; }\n }\n\u003c\/style\u003e\n\u003cdiv class=\"px-desc\"\u003e\n\u003c!-- Hero --\u003e\n\u003cdiv class=\"px-hero\"\u003e\n\u003cp class=\"px-title\"\u003eProline X P12D-S\u003c\/p\u003e\n\u003cp class=\"px-subtitle\"\u003eDual 12\" Sealed Subwoofer Enclosure | V3\u003c\/p\u003e\n\u003cdiv class=\"px-badges\"\u003e\n\u003cspan class=\"px-badge\"\u003e2.0 ft³ Net\u003c\/span\u003e \u003cspan class=\"px-badge\"\u003eSealed Alignment\u003c\/span\u003e \u003cspan class=\"px-badge\"\u003eShared Air Space\u003c\/span\u003e \u003cspan class=\"px-badge\"\u003e7\" Max Depth\u003c\/span\u003e \u003cspan class=\"px-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e \u003cspan class=\"px-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Introduction --\u003e\n\u003cdiv class=\"px-section\"\u003e\n\u003ch2\u003eTwo 12\" Drivers. One Sealed Enclosure. Wide Soundstage, Controlled Bass.\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eProline X P12D-S\u003c\/strong\u003e is a dual 12\" sealed enclosure built for installs that need the output and soundstage width of two drivers without the depth requirement of a large single-driver ported box. At \u003cstrong\u003e2.0 ft³ net\u003c\/strong\u003e in a shared air space with heavy internal bracing, and sealed alignment, this enclosure delivers controlled, accurate bass across a presentation that no single 12\" can replicate. Two 12\" drivers in sealed alignment produce combined cone area that approaches a single 18\" driver while maintaining the transient accuracy and flat response that sealed alignment delivers.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e28\" wide, 14.5\" tall, and 12.5\" deep\u003c\/strong\u003e, the P12D-S fits across most full-size trunk floors without the depth commitment of a single 12\" ported box or a dual 12\" ported build. The \u003cstrong\u003e7\" max mounting depth\u003c\/strong\u003e covers the majority of standard 12\" drivers. Both drivers share a single terminal cup. Both must be run at the same impedance.\u003c\/p\u003e\n\u003cp\u003eEvery panel is CNC-cut from \u003cstrong\u003eLangboard Elite MDF\u003c\/strong\u003e to exact internal volume and assembled by hand in our Tennessee facility. Finish options are Dark Gray Trunkliner or Plush Black. Shipping is included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Why Dual Sealed --\u003e\n\u003cdiv class=\"px-section\"\u003e\n\u003ch2\u003eWhy Dual 12\" Sealed\u003c\/h2\u003e\n\u003cp\u003eTwo 12\" drivers in sealed alignment is one of the most capable bass configurations available in a compact depth profile. The combined cone area approaches a single 18\" driver, but at 12.5\" deep, the P12D-S fits across a full-size trunk floor where an 18\" ported box would require an entirely custom build to accommodate. The sealed alignment preserves the transient accuracy and flat response that makes the 12\" format valuable for musical listening, applied at a combined output level that fills large vehicles and pressurizes the cabin at moderate power levels.\u003c\/p\u003e\n\u003cp\u003eThe shared 2.0 ft³ air space with heavy internal bracing provides both drivers with a larger effective acoustic load than two individual 1.0 ft³ separated chambers, the drivers interact with a combined air mass that produces a more cohesive low-frequency response across the full 28\" baffle width.\u003c\/p\u003e\n\u003cdiv class=\"px-grid\"\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eCombined Cone Area\u003c\/h4\u003e\n\u003cp\u003eTwo 12\" drivers produce combined cone area approaching a single 18\" while maintaining the transient accuracy and flat response of sealed alignment. More output than any single 12\" at any power level, in a 12.5\" deep enclosure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eCompact Depth Profile\u003c\/h4\u003e\n\u003cp\u003eAt 12.5\" deep, the P12D-S fits across full-size trunk floors where a single 12\" ported or dual 12\" ported build would require significantly more depth. The output-to-depth ratio is the strongest argument for this configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eWide Bass Presentation\u003c\/h4\u003e\n\u003cp\u003eTwo drivers spaced across a 28\" baffle produce a wider, more even low-frequency field than any single point source. Bass is distributed more evenly across the full cabin width from driver seat to passenger seat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eShared Air Space: Cohesive Response\u003c\/h4\u003e\n\u003cp\u003eThe shared 2.0 ft³ interior with heavy internal bracing provides a larger effective acoustic load per driver than separated chambers. Both drivers work the same combined air mass for a more cohesive low-frequency response across the full 28\" baffle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Construction --\u003e\n\u003cdiv class=\"px-section\" style=\"text-align: center;\"\u003e\n\u003ch2\u003eConstruction: Shared Air Space, Maximum Bracing, Single Terminal Cup\u003c\/h2\u003e\n\u003cp\u003eThe P12D-S uses the same Langboard Elite MDF and V-groove and dado joinery construction as every enclosure in the Proline X Performance Series. The interior is a single shared air space with heavy strategic bracing throughout, not two separated chambers. Two 12\" motors in a shared air space generate significant combined pressure on every panel simultaneously. The bracing strategy on the P12D-S is calculated to control panel resonance at the output levels two 12\" drivers can produce.\u003c\/p\u003e\n\u003ch3\u003eLangboard Elite MDF, Named, Verified, Documented\u003c\/h3\u003e\n\u003cp\u003eEvery panel is cut from \u003cstrong\u003eLangboard Elite MDF: 3\/4\" (18mm)\u003c\/strong\u003e, a named, mill-documented panel stock produced in the United States. The specifications below are pulled directly from Langboard's published mill data.\u003c\/p\u003e\n\u003cdiv class=\"px-highlight\"\u003e\n\u003ch3\u003eLangboard Elite: Published Mill Data\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³, higher density means less porosity, better screw retention, and reduced resonance\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi, resistance to delamination under sustained bass pressure cycling\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi, panel stiffness under load; less flex means less resonance\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs, baffle hardware stays locked under vibration\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs, joint integrity at every panel edge connection\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"Pre Assembly showing dados and vcuts\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/P12D-S_III_Pre_Assembly.jpg?v=1742876131\" style=\"margin-bottom: 25px; float: none;\"\u003e\u003c\/p\u003e\n\u003cp\u003eEvery panel joint uses \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. On an enclosure spanning 28\" wide with two 12\" motors generating combined pressure on every panel simultaneously, joint integrity and panel rigidity are not optional. They are the structural foundation the enclosure depends on to maintain acoustic performance over time.\u003c\/p\u003e\n\u003ch3\u003eSingle Terminal Cup: Same Impedance Required\u003c\/h3\u003e\n\u003cp\u003eThe P12D-S uses a single \u003cstrong\u003eABS\/Carbon Fiber Composite recessed terminal cup\u003c\/strong\u003e built in-house at our Tennessee facility. Both drivers are wired internally to the cup with stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with \u003cstrong\u003e12g OFC speaker wire\u003c\/strong\u003e. Both drivers must be run at the same impedance. Confirm your amplifier output and driver impedances match before wiring.\u003c\/p\u003e\n\u003cdiv class=\"px-grid\"\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n\u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers. Both driver cutouts are machined to identical diameter and position across the 28\" baffle. Consistent geometry across every unit produced.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n\u003cp\u003eEvery enclosure is hand-assembled at our Tennessee facility and inspected before it ships. No overseas manufacturing. No batch assembly shortcuts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eDark Gray Trunkliner or Plush Black\u003c\/h4\u003e\n\u003cp\u003eBoth finish options are professionally applied. Dark Gray Trunkliner blends with factory trunk materials. Plush Black delivers the traditional aftermarket look. Both are durably bonded for long-term wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eShipping Included\u003c\/h4\u003e\n\u003cp\u003eNo freight charges at checkout. The price you see is the price you pay. The enclosure ships assembled and ready to install.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Fitment --\u003e\n\u003cdiv class=\"px-section\"\u003e\n\u003ch2\u003eFitment Guide\u003c\/h2\u003e\n\u003cp\u003eThe P12D-S spans \u003cstrong\u003e28\" wide\u003c\/strong\u003e and sits at only \u003cstrong\u003e12.5\" deep\u003c\/strong\u003e: a compact depth profile for a dual 12\" enclosure. It fits across most full-size trunk floors without the depth commitment of any ported 12\" build.\u003c\/p\u003e\n\u003ch3\u003eDimensional Specifications\u003c\/h3\u003e\n\u003cdiv class=\"px-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 28\" W x 14.5\" H x 12.5\" D\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 2.0 ft³, shared air space, heavily braced\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e N\/A, Sealed\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSubwoofer Cutout:\u003c\/strong\u003e 11.15\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMax Mounting Depth:\u003c\/strong\u003e 7\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFront Panel Thickness:\u003c\/strong\u003e 0.75\" Single Baffle\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eDriver Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe P12D-S accommodates any 12\" subwoofer with a cutout diameter at or below \u003cstrong\u003e11.15\"\u003c\/strong\u003e and a mounting depth at or below \u003cstrong\u003e7\"\u003c\/strong\u003e. Both drivers must be the same model and impedance. Verify published specifications before ordering.\u003c\/p\u003e\n\u003ch3\u003eCompatible Drivers\u003c\/h3\u003e\n\u003cp\u003eThe following drivers are available from Audio Intensity and are compatible with the P12D-S:\u003c\/p\u003e\n\u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb2-series\"\u003eProdigy NB2-12D4 \u003c\/a\u003e \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/image-dynamics-id12-v4-12-inch-subwoofer\"\u003eImage Dynamics ID12 V4 \u003c\/a\u003e \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb3-series\"\u003eProdigy NB3-12D4 \u003c\/a\u003e \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/arc-audio-arc-series-12-subwoofer\"\u003eArc Audio ARC12 D2 \u003c\/a\u003e\n\u003cp style=\"font-size: 0.9em; color: #64748b; margin-top: 12px;\"\u003eAlways verify cutout diameter and mounting depth against your specific driver's published specifications before ordering. Both drivers must be run at the same impedance.\u003c\/p\u003e\n\u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n\u003cdiv class=\"px-grid\"\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eFull Trunk Floor Build\u003c\/h4\u003e\n\u003cp\u003eAt 28\" wide and 12.5\" deep, the P12D-S spans a full-size trunk floor with less depth than most single 12\" ported enclosures. A dual 12\" sealed build that fits where ported builds of any size cannot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eSQ and DSP-Controlled Systems\u003c\/h4\u003e\n\u003cp\u003eTwo sealed 12\" drivers produce the combined output and wide bass presentation that SQ competition builds demand, with the flat sealed response that DSP-controlled systems can tune precisely. The most capable sealed configuration in the Performance Series lineup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eHigh-Output Daily Systems\u003c\/h4\u003e\n\u003cp\u003eCombined cone area approaching a single 18\" in sealed alignment produces output that fills large vehicles and pressurizes the cabin at moderate power levels. A strong platform for daily high-output builds that prioritize accuracy over raw SPL.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"px-card\"\u003e\n\u003ch4\u003eStep Up From Single 12\" Sealed\u003c\/h4\u003e\n\u003cp\u003eFor builds running the P12-S that need more output and wider bass presentation without switching to a ported alignment, the P12D-S is the direct step up. Same driver compatibility, significantly more output and soundstage width.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CTA --\u003e\n\u003cdiv class=\"px-cta\"\u003e\n\u003ch2\u003eDual 12\" Accuracy. Compact Depth. Tennessee-Built.\u003c\/h2\u003e\n\u003cp\u003eThe Proline X P12D-S delivers dual 12\" sealed performance in a 12.5\" deep enclosure that fits where larger builds cannot. Langboard Elite MDF. V-groove and dado joinery. Heavy internal bracing. In-house terminal cup. Hand-assembled in Tennessee and inspected before it ships.\u003c\/p\u003e\n\u003cp\u003eTwo drivers. Sealed accuracy. Combined cone area approaching a single 18\", in a compact trunk floor footprint. \u003cstrong\u003e$219.99 Dark Gray Trunkliner. $229.99 Plush Black.\u003c\/strong\u003e Shipping included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dark Gray Trunkliner","offer_id":42257195303001,"sku":"P12D-S G","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black","offer_id":42257195335769,"sku":"P12D-S B","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-performance-p12d-s-dual-12-inch-sealed-subwoofer-boxsubwoofer-enclosuresproline-x-736180.jpg?v=1761969147"},{"product_id":"proline-x-p12-p-single-12-ported-subwoofer-enclosure-v3","title":"Proline X P12-P | Single 12\" Ported Subwoofer Enclosure | V3","description":"\u003cstyle\u003e\n .px-desc {\n font-family: 'Helvetica Neue', Arial, sans-serif;\n line-height: 1.8;\n color: #1e293b;\n max-width: 1200px;\n margin: 0 auto;\n background: #ffffff;\n }\n\n .px-hero {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-hero .px-title {\n font-size: 2.6em;\n font-weight: 800;\n text-transform: uppercase;\n letter-spacing: 2px;\n margin: 0 0 10px 0;\n color: white;\n }\n\n .px-hero .px-subtitle {\n font-size: 1.2em;\n font-weight: 300;\n opacity: 0.9;\n margin: 0 0 30px 0;\n }\n\n .px-badges {\n display: flex;\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px;\n margin-top: 20px;\n }\n\n .px-badge {\n background: rgba(6, 182, 212, 0.2);\n border: 1px solid #06b6d4;\n color: #67e8f9;\n padding: 8px 20px;\n border-radius: 20px;\n font-size: 0.9em;\n font-weight: 600;\n letter-spacing: 0.5px;\n }\n\n .px-section {\n padding: 50px 40px;\n border-bottom: 1px solid #e2e8f0;\n background: #ffffff;\n }\n\n .px-section:nth-child(even) {\n background: #f0f9ff;\n }\n\n .px-section h2 {\n color: #0e7490;\n font-size: 2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n padding-bottom: 12px;\n border-bottom: 3px solid #06b6d4;\n }\n\n .px-section h3 {\n color: #0f172a;\n font-size: 1.4em;\n font-weight: 600;\n margin: 30px 0 15px 0;\n }\n\n .px-section p {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 18px;\n }\n\n .px-section ul {\n margin: 15px 0;\n padding-left: 25px;\n }\n\n .px-section li {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 10px;\n line-height: 1.7;\n }\n\n .px-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 24px;\n margin: 30px 0;\n }\n\n .px-card {\n background: #ffffff;\n border: 1px solid #e2e8f0;\n border-top: 4px solid #06b6d4;\n border-radius: 6px;\n padding: 24px;\n }\n\n .px-card h4 {\n color: #0e7490;\n font-size: 1.15em;\n font-weight: 700;\n margin: 0 0 12px 0;\n }\n\n .px-card p {\n font-size: 1em;\n color: #475569;\n margin: 0;\n line-height: 1.7;\n }\n\n .px-highlight {\n background: #f0f9ff;\n border-left: 5px solid #06b6d4;\n padding: 24px 28px;\n margin: 28px 0;\n border-radius: 0 6px 6px 0;\n }\n\n .px-highlight h3 {\n color: #0e7490;\n margin: 0 0 12px 0;\n font-size: 1.2em;\n }\n\n .px-highlight p {\n margin-bottom: 10px;\n color: #1e293b;\n }\n\n .px-cta {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-cta h2 {\n font-size: 2.2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n color: white;\n border: none;\n padding: 0;\n }\n\n .px-cta p {\n font-size: 1.15em;\n opacity: 0.92;\n max-width: 800px;\n margin: 0 auto 20px auto;\n color: white;\n }\n\n .px-driver-link {\n display: inline-block;\n background: #f0f9ff;\n border: 2px solid #06b6d4;\n border-radius: 6px;\n padding: 16px 24px;\n margin: 10px 10px 10px 0;\n text-decoration: none;\n color: #0e7490;\n font-weight: 700;\n font-size: 1em;\n transition: all 0.2s ease;\n }\n\n .px-driver-link:hover {\n background: #06b6d4;\n color: white;\n }\n\n @media (max-width: 768px) {\n .px-hero { padding: 40px 20px; }\n .px-hero .px-title { font-size: 1.8em; }\n .px-section { padding: 30px 20px; }\n .px-section h2 { font-size: 1.6em; }\n .px-grid { grid-template-columns: 1fr; }\n .px-cta { padding: 40px 20px; }\n .px-cta h2 { font-size: 1.6em; }\n }\n\u003c\/style\u003e\n\n\u003cdiv class=\"px-desc\"\u003e\n\n \u003c!-- Hero --\u003e\n \u003cdiv class=\"px-hero\"\u003e\n \u003cp class=\"px-title\"\u003eProline X P12-P\u003c\/p\u003e\n \u003cp class=\"px-subtitle\"\u003eSingle 12\" Ported Subwoofer Enclosure | V3\u003c\/p\u003e\n \u003cdiv class=\"px-badges\"\u003e\n \u003cspan class=\"px-badge\"\u003e1.5 ft³ Net\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003e36Hz Tuning\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003ePorted Bass Reflex\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003e7.25\" Max Depth\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Introduction --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eMaximum Output From a Single 12\". Deep, Efficient, Properly Tuned.\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eProline X P12-P\u003c\/strong\u003e is a single 12\" slot-ported enclosure built for installs that need the most output a single 12\" driver can produce. At \u003cstrong\u003e1.5 ft³ net\u003c\/strong\u003e and tuned to \u003cstrong\u003e36Hz\u003c\/strong\u003e, this enclosure gives a 12\" driver the air space and port geometry to operate at its efficiency peak, strong output from the upper bass range down into the low 30s, with a response curve that performs across music genres without being optimized for just one application.\u003c\/p\u003e\n \u003cp\u003eAt \u003cstrong\u003e19.5\" wide, 14.5\" tall, and 15.5\" deep\u003c\/strong\u003e, the P12-P is sized for a standard trunk build. The 15.5\" depth is the critical dimension. Measure your available trunk depth before ordering. The \u003cstrong\u003e7.25\" max mounting depth\u003c\/strong\u003e covers most standard 12\" drivers. Port geometry is CNC-cut to exact dimensions. Tuning is consistent unit to unit with no hand-cut variance in port length or cross-section.\u003c\/p\u003e\n \u003cp\u003eEvery panel is CNC-cut from \u003cstrong\u003eLangboard Elite MDF\u003c\/strong\u003e to exact internal volume and assembled by hand in our Tennessee facility. A single recessed \u003cstrong\u003eABS\/Carbon Fiber Composite terminal cup\u003c\/strong\u003e handles wiring, pre-wired with \u003cstrong\u003e12g OFC speaker wire\u003c\/strong\u003e. Finish options are Dark Gray Trunkliner or Plush Black. Shipping is included.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- Why Ported --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eWhy Ported at 36Hz for a Single 12\"\u003c\/h2\u003e\n \u003cp\u003eA sealed 12\" at 1.25 ft³ produces accurate, controlled bass with a flat response. The P12-P trades some of that precision for significantly more output and lower frequency extension, the correct tradeoff when the install goal is impact, room-pressurizing bass, and maximum efficiency from the 12\" format. The ported alignment at \u003cstrong\u003e36Hz\u003c\/strong\u003e pushes the efficiency peak into the upper sub-bass range where the majority of bass content in music lives, and where a sealed 12\" cannot compete on output at the same power level.\u003c\/p\u003e\n \u003cp\u003eAt 1.5 ft³, the P12-P gives the driver adequate air space in a ported alignment without the box becoming impractical for a standard trunk install. Port velocity stays controlled at this volume, no chuffing, no audible port noise at real-world listening levels. The driver operates in its correctly-sized ported range and the port is sized to match the enclosure volume.\u003c\/p\u003e\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eExtended Low-Frequency Output\u003c\/h4\u003e\n \u003cp\u003ePorted alignment at 36Hz extends usable bass output significantly lower than the sealed P12-S. The P12-P produces audible, impactful output well below 40Hz. Output levels the sealed version cannot approach at the same amplifier power level.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eHigher Efficiency Per Watt\u003c\/h4\u003e\n \u003cp\u003ePorted enclosures convert amplifier power to acoustic output more efficiently than sealed designs near the tuning frequency. More output from the same amplifier, the 12\" format in ported alignment is one of the most efficient bass configurations in car audio.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eReduced Driver Excursion at Tuning\u003c\/h4\u003e\n \u003cp\u003eAt and near 36Hz, the port handles the acoustic load and driver excursion drops significantly. Less mechanical stress on the driver at the frequencies where high-excursion 12\" motors are most vulnerable to over-excursion at sustained high power levels.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003e36Hz: General-Purpose Tuning\u003c\/h4\u003e\n \u003cp\u003e36Hz provides strong output through the upper sub-bass without port velocity issues on a properly sized 12\" enclosure. A genre-agnostic tuning point that performs across hip-hop, rock, and electronic equally, not tuned for one application at the expense of others.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Construction --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eConstruction: CNC-Cut Port Geometry, Consistent Tuning Every Unit\u003c\/h2\u003e\n \u003cp\u003eThe P12-P uses the same Langboard Elite MDF and V-groove and dado joinery construction as every enclosure in the Proline X Performance Series. The port geometry, length, cross-section, and position, is CNC-cut to exact dimensions. Tuning frequency does not vary between units. Every P12-P performs identically to spec.\u003c\/p\u003e\n\n \u003ch3\u003eLangboard Elite MDF, Named, Verified, Documented\u003c\/h3\u003e\n \u003cp\u003eEvery panel is cut from \u003cstrong\u003eLangboard Elite MDF: 3\/4\" (18mm)\u003c\/strong\u003e, a named, mill-documented panel stock produced in the United States. The specifications below are pulled directly from Langboard's published mill data.\u003c\/p\u003e\n\n \u003cdiv class=\"px-highlight\"\u003e\n \u003ch3\u003eLangboard Elite: Published Mill Data\u003c\/h3\u003e\n \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³, higher density means less porosity, better screw retention, and reduced resonance\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi, resistance to delamination under sustained bass pressure cycling\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi, panel stiffness under load; less flex means less resonance\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs, baffle hardware stays locked under vibration\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs, joint integrity at every panel edge connection\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n \u003cp\u003eEvery panel joint uses \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. Port panels are joined with the same interlocking geometry as the enclosure walls, airtight, consistent, and resistant to shear forces at the joint level regardless of adhesive condition over time.\u003c\/p\u003e\n\n \u003ch3\u003eIn-House ABS\/Carbon Fiber Composite Terminal Cup\u003c\/h3\u003e\n \u003cp\u003eThe terminal cup is built in-house at our Tennessee facility. The \u003cstrong\u003eABS\/Carbon Fiber Composite recessed cup\u003c\/strong\u003e features stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with \u003cstrong\u003e12g OFC speaker wire\u003c\/strong\u003e. The recessed mount protects terminals from cargo contact. Copper ring terminals provide a clean, corrosion-resistant connection that does not loosen under vibration.\u003c\/p\u003e\n\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eCNC-Cut Port Geometry\u003c\/h4\u003e\n \u003cp\u003ePort length, cross-section, and position are machine-cut to exact dimensions on ShopSabre CNC routers. Tuning frequency is consistent unit to unit. No hand-cut variance in port dimensions means every P12-P performs identically.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n \u003cp\u003eEvery enclosure is hand-assembled at our Tennessee facility and inspected before it ships. No overseas manufacturing. No batch assembly shortcuts.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDark Gray Trunkliner or Plush Black\u003c\/h4\u003e\n \u003cp\u003eBoth finish options are professionally applied. Dark Gray Trunkliner blends with factory trunk materials. Plush Black delivers the traditional aftermarket look. Both are durably bonded for long-term wear.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eShipping Included\u003c\/h4\u003e\n \u003cp\u003eNo freight charges at checkout. The price you see is the price you pay. The enclosure ships assembled and ready to install.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Fitment --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eFitment Guide\u003c\/h2\u003e\n \u003cp\u003eThe P12-P fits in most standard sedan and truck trunk configurations. At \u003cstrong\u003e19.5\"W x 14.5\"H x 15.5\"D\u003c\/strong\u003e, the 15.5\" depth is the critical dimension. Deeper than the sealed P12-S. Measure your available trunk depth before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eDimensional Specifications\u003c\/h3\u003e\n \u003cdiv class=\"px-highlight\"\u003e\n \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 19.5\" W x 14.5\" H x 15.5\" D\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 1.5 ft³\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 36Hz\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eSubwoofer Cutout:\u003c\/strong\u003e 11.15\"\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eMax Mounting Depth:\u003c\/strong\u003e 7.25\"\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eFront Panel Thickness:\u003c\/strong\u003e 0.75\" Single Baffle\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eDriver Compatibility\u003c\/h3\u003e\n \u003cp\u003eThe P12-P accommodates any 12\" subwoofer with a cutout diameter at or below \u003cstrong\u003e11.15\"\u003c\/strong\u003e and a mounting depth at or below \u003cstrong\u003e7.25\"\u003c\/strong\u003e. Verify both dimensions against your driver's published specifications before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eCompatible Drivers\u003c\/h3\u003e\n \u003cp\u003eThe following drivers are available from Audio Intensity and are compatible with the P12-P:\u003c\/p\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb2-series\"\u003eProdigy NB2-12D4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/image-dynamics-id12-v4-12-inch-subwoofer\"\u003eImage Dynamics ID12 V4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb3-series\"\u003eProdigy NB3-12D4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/arc-audio-arc-series-12-subwoofer\"\u003eArc Audio ARC12 D2 \u003c\/a\u003e\n \u003cp style=\"font-size:0.9em; color:#64748b; margin-top:12px;\"\u003eAlways verify cutout diameter and mounting depth against your specific driver's published specifications before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eStandard Trunk Build\u003c\/h4\u003e\n \u003cp\u003eAt 19.5\" wide and 15.5\" deep, the P12-P fits in most standard sedan and truck trunk configurations. The 15.5\" depth requires more trunk space than the sealed P12-S. Measure your available depth before ordering.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eMaximum Single 12\" Output\u003c\/h4\u003e\n \u003cp\u003eFor builds where the P12-S sealed is not enough output, the P12-P is the direct step up. Same driver compatibility, significantly more output and lower frequency extension from the ported alignment at 36Hz.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDaily High-Output Systems\u003c\/h4\u003e\n \u003cp\u003eThe 36Hz tuning and 1.5 ft³ volume produce a bass response that works across music genres at high output levels without requiring system-specific tuning. A strong general-purpose single 12\" ported platform for daily high-output use.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eStep Up From 10\" Builds\u003c\/h4\u003e\n \u003cp\u003eFor installs running a single 10\" ported that need more output and deeper extension, the P12-P is the natural step up. More cone area, more volume, more output from a similarly sized trunk footprint.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- CTA --\u003e\n \u003cdiv class=\"px-cta\"\u003e\n \u003ch2\u003eMaximum 12\" Output. Tennessee-Built. Shipping Included.\u003c\/h2\u003e\n \u003cp\u003eThe Proline X P12-P is a single 12\" ported enclosure built to a spec, not a price point. Langboard Elite MDF. V-groove and dado joinery. CNC-cut port geometry. In-house terminal cup. Hand-assembled in Tennessee and inspected before it ships.\u003c\/p\u003e\n \u003cp\u003eIf you need the most output a single 12\" driver can produce from a standard trunk footprint. This is the correct enclosure. \u003cstrong\u003e$219.99 Dark Gray Trunkliner. $229.99 Plush Black.\u003c\/strong\u003e Shipping included.\u003c\/p\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dark Gray Trunkliner","offer_id":43157658239065,"sku":"P12-P G","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black","offer_id":43157658271833,"sku":"P12-P B","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/proline-x-performance-p12-p-ported-enclosure-for-12-subwooferssubwoofer-enclosuresproline-x-818300.jpg?v=1761969149"},{"product_id":"proline-x-p12d-p-dual-12-ported-subwoofer-enclosure-v3","title":"Proline X P12D-P | Dual 12\" Ported Subwoofer Enclosure | V3","description":"\u003cstyle\u003e\n .px-desc {\n font-family: 'Helvetica Neue', Arial, sans-serif;\n line-height: 1.8;\n color: #1e293b;\n max-width: 1200px;\n margin: 0 auto;\n background: #ffffff;\n }\n\n .px-hero {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-hero .px-title {\n font-size: 2.6em;\n font-weight: 800;\n text-transform: uppercase;\n letter-spacing: 2px;\n margin: 0 0 10px 0;\n color: white;\n }\n\n .px-hero .px-subtitle {\n font-size: 1.2em;\n font-weight: 300;\n opacity: 0.9;\n margin: 0 0 30px 0;\n }\n\n .px-badges {\n display: flex;\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px;\n margin-top: 20px;\n }\n\n .px-badge {\n background: rgba(6, 182, 212, 0.2);\n border: 1px solid #06b6d4;\n color: #67e8f9;\n padding: 8px 20px;\n border-radius: 20px;\n font-size: 0.9em;\n font-weight: 600;\n letter-spacing: 0.5px;\n }\n\n .px-section {\n padding: 50px 40px;\n border-bottom: 1px solid #e2e8f0;\n background: #ffffff;\n }\n\n .px-section:nth-child(even) {\n background: #f0f9ff;\n }\n\n .px-section h2 {\n color: #0e7490;\n font-size: 2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n padding-bottom: 12px;\n border-bottom: 3px solid #06b6d4;\n }\n\n .px-section h3 {\n color: #0f172a;\n font-size: 1.4em;\n font-weight: 600;\n margin: 30px 0 15px 0;\n }\n\n .px-section p {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 18px;\n }\n\n .px-section ul {\n margin: 15px 0;\n padding-left: 25px;\n }\n\n .px-section li {\n font-size: 1.05em;\n color: #334155;\n margin-bottom: 10px;\n line-height: 1.7;\n }\n\n .px-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 24px;\n margin: 30px 0;\n }\n\n .px-card {\n background: #ffffff;\n border: 1px solid #e2e8f0;\n border-top: 4px solid #06b6d4;\n border-radius: 6px;\n padding: 24px;\n }\n\n .px-card h4 {\n color: #0e7490;\n font-size: 1.15em;\n font-weight: 700;\n margin: 0 0 12px 0;\n }\n\n .px-card p {\n font-size: 1em;\n color: #475569;\n margin: 0;\n line-height: 1.7;\n }\n\n .px-highlight {\n background: #f0f9ff;\n border-left: 5px solid #06b6d4;\n padding: 24px 28px;\n margin: 28px 0;\n border-radius: 0 6px 6px 0;\n }\n\n .px-highlight h3 {\n color: #0e7490;\n margin: 0 0 12px 0;\n font-size: 1.2em;\n }\n\n .px-highlight p {\n margin-bottom: 10px;\n color: #1e293b;\n }\n\n .px-cta {\n background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);\n padding: 60px 40px;\n text-align: center;\n color: white;\n }\n\n .px-cta h2 {\n font-size: 2.2em;\n font-weight: 700;\n margin: 0 0 20px 0;\n color: white;\n border: none;\n padding: 0;\n }\n\n .px-cta p {\n font-size: 1.15em;\n opacity: 0.92;\n max-width: 800px;\n margin: 0 auto 20px auto;\n color: white;\n }\n\n .px-driver-link {\n display: inline-block;\n background: #f0f9ff;\n border: 2px solid #06b6d4;\n border-radius: 6px;\n padding: 16px 24px;\n margin: 10px 10px 10px 0;\n text-decoration: none;\n color: #0e7490;\n font-weight: 700;\n font-size: 1em;\n transition: all 0.2s ease;\n }\n\n .px-driver-link:hover {\n background: #06b6d4;\n color: white;\n }\n\n @media (max-width: 768px) {\n .px-hero { padding: 40px 20px; }\n .px-hero .px-title { font-size: 1.8em; }\n .px-section { padding: 30px 20px; }\n .px-section h2 { font-size: 1.6em; }\n .px-grid { grid-template-columns: 1fr; }\n .px-cta { padding: 40px 20px; }\n .px-cta h2 { font-size: 1.6em; }\n }\n\u003c\/style\u003e\n\n\u003cdiv class=\"px-desc\"\u003e\n\n \u003c!-- Hero --\u003e\n \u003cdiv class=\"px-hero\"\u003e\n \u003cp class=\"px-title\"\u003eProline X P12D-P\u003c\/p\u003e\n \u003cp class=\"px-subtitle\"\u003eDual 12\" Ported Subwoofer Enclosure | V3\u003c\/p\u003e\n \u003cdiv class=\"px-badges\"\u003e\n \u003cspan class=\"px-badge\"\u003e2.75 ft³ Net\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003e36Hz Tuning\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003ePorted Bass Reflex\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003e7.125\" Max Depth\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n \u003cspan class=\"px-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Introduction --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eDual 12\" Ported Output. The Highest Output Configuration in the Performance Series.\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eProline X P12D-P\u003c\/strong\u003e is a dual 12\" slot-ported enclosure built for installs that demand maximum output and deep low-frequency extension. At \u003cstrong\u003e2.75 ft³ net\u003c\/strong\u003e and tuned to \u003cstrong\u003e36Hz\u003c\/strong\u003e, this enclosure gives two 12\" drivers the combined air space and port geometry to produce output at the top end of what the Performance Series delivers. Two 12\" drivers in ported alignment at 36Hz produce combined output that fills large vehicles and dedicated listening spaces. Output that requires custom fabrication or a purpose-built SPL setup to exceed.\u003c\/p\u003e\n \u003cp\u003eAt \u003cstrong\u003e32\" wide, 15\" tall, and 15.3\" deep\u003c\/strong\u003e, the P12D-P is a dedicated trunk build. Both the 32\" width and 15.3\" depth are critical dimensions. Measure your available trunk space carefully before ordering. The \u003cstrong\u003e7.125\" max mounting depth\u003c\/strong\u003e covers the majority of standard 12\" drivers. A single terminal cup handles both drivers internally. Both must be run at the same impedance.\u003c\/p\u003e\n \u003cp\u003eEvery panel is CNC-cut from \u003cstrong\u003eLangboard Elite MDF\u003c\/strong\u003e to exact internal volume and assembled by hand in our Tennessee facility. Port geometry is CNC-cut to exact dimensions. Tuning is consistent unit to unit. Finish options are Dark Gray Trunkliner or Plush Black. Shipping is included.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- Why Ported --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eWhy Dual 12\" Ported at 36Hz\u003c\/h2\u003e\n \u003cp\u003eThe dual 12\" ported configuration at 36Hz is the highest-output enclosure in the Performance Series lineup. Two 12\" drivers in ported alignment produce combined output that exceeds what most single large-format drivers in ported enclosures can match at equivalent amplifier power levels. The 36Hz tuning point places the port output peak in the upper sub-bass range, where impact is most audible and where the combined efficiency of two ported drivers reaches its maximum.\u003c\/p\u003e\n \u003cp\u003eAt 2.75 ft³ net, each driver has adequate air space to operate efficiently in ported alignment. Port velocity is controlled at this volume, no chuffing, no audible port noise at real-world listening levels. Both drivers operate at the same correctly-sized acoustic load at the same tuning frequency, which produces consistent output and consistent port behavior across the full output range of the enclosure.\u003c\/p\u003e\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eMaximum Performance Series Output\u003c\/h4\u003e\n \u003cp\u003eTwo 12\" drivers in ported alignment at 36Hz represent the peak output configuration in the Performance Series. Combined efficiency at the tuning point produces bass output that no other enclosure in the lineup approaches.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003e36Hz: Deep and Impactful\u003c\/h4\u003e\n \u003cp\u003e36Hz places the efficiency peak at the upper sub-bass range where bass impact is most audible. Strong output from the mid-30s through the upper bass range without port velocity issues at the 2.75 ft³ volume this enclosure provides.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003e2.75 ft³: Room to Breathe\u003c\/h4\u003e\n \u003cp\u003eEach driver has adequate air space in ported alignment. Port velocity stays controlled at real-world listening levels. Both drivers operate efficiently at 36Hz without the enclosure working against them or port noise becoming audible.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eWide Bass Dispersion\u003c\/h4\u003e\n \u003cp\u003eTwo drivers spaced across a 32\" baffle produce the widest bass dispersion in the Performance Series ported lineup. Low-frequency output is distributed evenly across the full cabin width at output levels that demand it.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Construction --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eConstruction: Maximum Volume, CNC-Cut Port Geometry, Single Terminal Cup\u003c\/h2\u003e\n \u003cp\u003eThe P12D-P uses the same Langboard Elite MDF and V-groove and dado joinery construction as every enclosure in the Proline X Performance Series. At 32\" wide and 15.3\" deep, this is the largest enclosure in the Performance Series lineup. Joint integrity and panel rigidity across every panel are critical at this scale. Port geometry is CNC-cut to exact dimensions. A single terminal cup handles both drivers internally.\u003c\/p\u003e\n\n \u003ch3\u003eLangboard Elite MDF, Named, Verified, Documented\u003c\/h3\u003e\n \u003cp\u003eEvery panel is cut from \u003cstrong\u003eLangboard Elite MDF: 3\/4\" (18mm)\u003c\/strong\u003e, a named, mill-documented panel stock produced in the United States. The specifications below are pulled directly from Langboard's published mill data.\u003c\/p\u003e\n\n \u003cdiv class=\"px-highlight\"\u003e\n \u003ch3\u003eLangboard Elite: Published Mill Data\u003c\/h3\u003e\n \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³, higher density means less porosity, better screw retention, and reduced resonance\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi, resistance to delamination under sustained bass pressure cycling\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi, panel stiffness under load; less flex means less resonance\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs, baffle hardware stays locked under vibration\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs, joint integrity at every panel edge connection\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n \u003cp\u003eEvery panel joint uses \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. On the largest enclosure in the Performance Series lineup, joint integrity across 32\" wide panels and 15.3\" deep side walls is the difference between an enclosure that holds its acoustic performance over years of sustained high-output use and one that does not. Every joint on the P12D-P is mechanically locked before adhesive is applied.\u003c\/p\u003e\n\n \u003ch3\u003eSingle Terminal Cup: Same Impedance Required\u003c\/h3\u003e\n \u003cp\u003eThe P12D-P uses a single \u003cstrong\u003eABS\/Carbon Fiber Composite recessed terminal cup\u003c\/strong\u003e built in-house at our Tennessee facility. Both drivers are wired internally to the cup with stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with \u003cstrong\u003e12g OFC speaker wire\u003c\/strong\u003e. Both drivers must be run at the same impedance. Confirm your amplifier output and driver impedances before wiring.\u003c\/p\u003e\n\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eCNC-Cut Port Geometry\u003c\/h4\u003e\n \u003cp\u003ePort length, cross-section, and position are machine-cut to exact dimensions on ShopSabre CNC routers. Tuning frequency is consistent unit to unit. No hand-cut variance in port dimensions across the largest enclosure in the lineup.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n \u003cp\u003eEvery enclosure is hand-assembled at our Tennessee facility and inspected before it ships. No overseas manufacturing. No batch assembly shortcuts. Regardless of enclosure size.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDark Gray Trunkliner or Plush Black\u003c\/h4\u003e\n \u003cp\u003eBoth finish options are professionally applied. Dark Gray Trunkliner blends with factory trunk materials. Plush Black delivers the traditional aftermarket look. Both are durably bonded for long-term wear.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eShipping Included\u003c\/h4\u003e\n \u003cp\u003eNo freight charges at checkout. The price you see is the price you pay. The enclosure ships assembled and ready to install.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Fitment --\u003e\n \u003cdiv class=\"px-section\"\u003e\n \u003ch2\u003eFitment Guide\u003c\/h2\u003e\n \u003cp\u003eThe P12D-P is the largest enclosure in the Performance Series. At \u003cstrong\u003e32\"W x 15\"H x 15.3\"D\u003c\/strong\u003e, both the width and depth are critical dimensions. This is a dedicated trunk build. Measure both dimensions carefully before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eDimensional Specifications\u003c\/h3\u003e\n \u003cdiv class=\"px-highlight\"\u003e\n \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 32\" W x 15\" H x 15.3\" D\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 2.75 ft³\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 36Hz\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eSubwoofer Cutout:\u003c\/strong\u003e 11.15\"\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eMax Mounting Depth:\u003c\/strong\u003e 7.125\"\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eFront Panel Thickness:\u003c\/strong\u003e 0.75\" Single Baffle\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eDriver Compatibility\u003c\/h3\u003e\n \u003cp\u003eThe P12D-P accommodates any 12\" subwoofer with a cutout diameter at or below \u003cstrong\u003e11.15\"\u003c\/strong\u003e and a mounting depth at or below \u003cstrong\u003e7.125\"\u003c\/strong\u003e. Both drivers must be the same model and impedance. Verify published specifications before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eCompatible Drivers\u003c\/h3\u003e\n \u003cp\u003eThe following drivers are available from Audio Intensity and are compatible with the P12D-P:\u003c\/p\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb2-series\"\u003eProdigy NB2-12D4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/image-dynamics-id12-v4-12-inch-subwoofer\"\u003eImage Dynamics ID12 V4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/prodigy-audio-12-inch-subwoofer-nb3-series\"\u003eProdigy NB3-12D4 \u003c\/a\u003e\n \u003ca class=\"px-driver-link\" href=\"https:\/\/audiointensity.com\/products\/arc-audio-arc-series-12-subwoofer\"\u003eArc Audio ARC12 D2 \u003c\/a\u003e\n \u003cp style=\"font-size:0.9em; color:#64748b; margin-top:12px;\"\u003eAlways verify cutout diameter and mounting depth against your specific driver's published specifications before ordering. Both drivers must be run at the same impedance.\u003c\/p\u003e\n\n \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n \u003cdiv class=\"px-grid\"\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eDedicated Trunk Build\u003c\/h4\u003e\n \u003cp\u003eAt 32\" wide and 15.3\" deep, the P12D-P requires a dedicated trunk installation with adequate space for both dimensions. Measure your available trunk width and depth before ordering. Both are critical.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eMaximum Performance Series Output\u003c\/h4\u003e\n \u003cp\u003eThe P12D-P is the highest-output enclosure in the Performance Series lineup. For builds where maximum output from a production enclosure is the goal: this is the correct choice.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eLarge Vehicle High-Output Systems\u003c\/h4\u003e\n \u003cp\u003eFull-size sedans, trucks, and SUVs with adequate trunk dimensions are the natural home for the P12D-P. The combined output of two 12\" drivers in ported alignment fills large acoustic spaces that smaller configurations cannot pressurize effectively.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"px-card\"\u003e\n \u003ch4\u003eStep Up From Sealed\u003c\/h4\u003e\n \u003cp\u003eFor builds running the P12D-S that need significantly more output and lower frequency extension, the P12D-P is the direct step up. Same driver compatibility, the full output advantage of ported alignment at 36Hz.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- CTA --\u003e\n \u003cdiv class=\"px-cta\"\u003e\n \u003ch2\u003eMaximum Dual 12\" Output. Tennessee-Built. Shipping Included.\u003c\/h2\u003e\n \u003cp\u003eThe Proline X P12D-P is the highest-output enclosure in the Performance Series. Langboard Elite MDF. V-groove and dado joinery. CNC-cut port geometry. In-house terminal cup. Hand-assembled in Tennessee and inspected before it ships.\u003c\/p\u003e\n \u003cp\u003eTwo drivers. Ported efficiency. The peak output configuration in the Proline X Performance Series lineup. \u003cstrong\u003e$269.99 Dark Gray Trunkliner. $279.99 Plush Black.\u003c\/strong\u003e Shipping included.\u003c\/p\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dark Gray Trunkliner","offer_id":43157680455769,"sku":"P12D-P G","price":269.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black","offer_id":43157680488537,"sku":"P12D-P B","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/proline-x-performance-p12d-p-ported-enclosure-for-dual-12-subwooferssubwoofer-enclosuresproline-x-723960.jpg?v=1761969165"},{"product_id":"proline-x-professional-series-enclosure-for-single-kickersolo-x-12","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 12\" Subwoofer","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica 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class=\"df-hero\"\u003e\n  \u003ch2\u003eProline X Enclosure | X Series | Fits Kicker Solo X 12\" Subwoofer\u003c\/h2\u003e\n  \u003cp\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is built to the published parameters of the Kicker Solo-Baric L7X.\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e3.00 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 31.0 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTriple 2.25\" baffle\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the Kicker Solo-Baric L7X 12\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 31.0 Hz\u003c\/h3\u003e\n  \u003cp\u003eThe Solo-Baric L7X 12 carries the biggest Sd of the three smaller L7X sizes, and this cabinet gives it 3.00 cubic feet net, vented at 31.0 Hz through a 44.5 square inch slot. It is the third size in the professional Kicker line, sized for one driver.\u003c\/p\u003e\n  \u003cp\u003eF3 lands at 26.5 Hz on this airspace, and passband ripple holds at 2.61 dB, comfortably inside the ceiling we hold new designs to. The port stays under the chuff threshold up to 676 W, above which the mouth velocity crosses Kicker's own reference. Set the subsonic filter at 24 Hz and leave it there below tuning.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe cabinet\u003c\/h3\u003e\n  \u003cp\u003e32.00\" W x 15.00\" H x 21.50\" D external, internally braced. It ships as a UPS parcel; the price includes shipping in the 48 states.\u003c\/p\u003e\n  \u003cp\u003eThis is our single-twelve envelope, sized for one L7X 12 only. The baffle cutout is machined to the L7X's square frame, which is not cross-compatible with round-frame drivers of the same nominal size. You source the driver. We handle the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe numbers to respect\u003c\/h3\u003e\n  \u003cp\u003eKicker's own Klippel rig measured the L7X 12 under SKU 49L7X122, and the Dual 2 Ohm coil is the one they publish; the cabinet fits either the D1 or D2 version of this driver. Kicker publishes no outer frame dimension for the L7X, so the frame OD used here, 12.5625 inches, is estimated from the published cutout; Kicker's own driver sheet also mislabels the L7X 12's cutout under a CompVX row, so the L7X owner's manual is the source used here instead. Audio Intensity and Proline X are not affiliated with Kicker.\u003c\/p\u003e\n  \u003cp\u003eThis cabinet is 3.00 cubic feet net, with a slot port of 44.5 square inches tuned to 31.0 Hz; the port stays under the chuff threshold up to 676 W; above that the air at the mouth moves faster than the 17 metres per second where a slot starts to chuff.\u003c\/p\u003e\n  \u003cp\u003eSet a 24 Hz subsonic filter, 24 dB per octave. Below tuning the vent stops loading the cone; with the filter in place the cone reaches 16.3 mm of its 31.2 mm at 3000 W.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"None - Carpet Only","offer_id":43165514334297,"sku":"Pro12-P KIK NA","price":570.99,"currency_code":"USD","in_stock":true},{"title":"Standard - Hex and Flag","offer_id":43165514367065,"sku":"Pro12-P KIK HEX","price":600.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofersubwoofer-enclosuresproline-x-9950209.jpg?v=1774479103"},{"product_id":"jeep-jk-subwoofer-box","title":"Jeep JK Subwoofer Box 2007-2017 4 Door","description":"\u003ch2 data-mce-fragment=\"1\"\u003eUpgrade Your Jeep Wrangler Audio\u003c\/h2\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\n\u003cspan\u003eThe Proline X VS \u003c\/span\u003e\u003cem\u003eCustom Subwoofer Enclosure\u003c\/em\u003e\u003cspan\u003e for \u003c\/span\u003e\u003cem\u003eJeep JK Tailored\u003c\/em\u003e\u003cspan\u003e Bass Solutions for Jeep Enthusiasts\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003eElevate your Jeep Wrangler's sound system with the Proline X VS Jeep 12-S, meticulously crafted for the 2007-2017 JK series 4-door Jeep Wrangler and also fitting the Jeep Wrangler JK 4-door. This custom subwoofer enclosure is not merely an addition but a transformative element for your off-road escapades and city drives, striking the perfect balance between immersive sound and efficient use of space.\u003c\/p\u003e\n\u003cp\u003eDesigned to provide deep, resonant bass without sacrificing your Wrangler's cargo area functionality or design, the Proline X VS Jeep 12-S features:\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eSpace-Efficient Design:\u003c\/strong\u003e It integrates flawlessly within the cargo space, preserving your Jeep's practicality and sleek appearance, making it an ideal Jeep JK 2-Door\u003cem data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/audiointensity.com\/collections\/subwoofer-box\" target=\"_blank\" rel=\"noopener\"\u003e Subwoofer Box\u003c\/a\u003e\u003c\/em\u003e\u003cspan\u003e data-mce-fragment=\"1\"\u0026gt;.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eOptimized for Rich Bass:\u003c\/strong\u003e  \u003cspan data-mce-fragment=\"1\"\u003eAccommodates any standard 10\" or 12\" subwoofer, with a sealed air space of 1.1ft³ and up to 9\" mounting depth, ensuring premium bass performance for the \u003c\/span\u003e\u003cem data-mce-fragment=\"1\"\u003eJeep JK Subwoofer Enclosure\u003c\/em\u003e\u003cspan data-mce-fragment=\"1\"\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eDurable Construction: \u003c\/strong\u003eConstructed from robust 100% MDF, this enclosure is as rugged as your Jeep, with a bed liner interior coating for superior sound quality and longevity, perfect for a \u003cem data-mce-fragment=\"1\"\u003eJKU Subwoofer Box\u003c\/em\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eExceptional Sound for Every Journey | Proudly Made in the USA\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003eThe Proline X VS Jeep 12-S is a custom-built subwoofer enclosure designed to enhance your driving experience, whether navigating urban streets or tackling the great outdoors. Its features include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003eCustom Fit for Your Jeep\u003c\/strong\u003e: Engineered for both driver and passenger-side installations, these durable, Jeep-specific sub-boxes are customizable to your sound preferences, making them suitable as a \u003c\/span\u003e\u003cem\u003eJeep Wrangler JK 4 Door Subwoofer Box\u003c\/em\u003e\u003cspan\u003e. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003e\u003cstrong\u003eBroad Compatibility\u003c\/strong\u003e: It is ideal for the 4-door Jeep Wrangler JK and Unlimited models, with upcoming versions for the Jeep Wrangler JL.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFAQs\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWill this subwoofer box fit my Jeep?\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eWe specifically tailored for 2007-2017 JK series 4-door Jeep Wrangler and Wrangler Unlimited models, with a Jeep Wrangler JL variant on the way. This makes it a perfect fit for those searching for a \u003c\/span\u003e\u003cem data-mce-fragment=\"1\"\u003eJeep JK 2 Door Subwoofer Box\u003c\/em\u003e\u003cspan data-mce-fragment=\"1\"\u003e or a \u003c\/span\u003e\u003cem data-mce-fragment=\"1\"\u003eJeep JK 4 Door Subwoofer Box\u003c\/em\u003e\u003cspan data-mce-fragment=\"1\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eCan this be used with a soft-top Jeep Wrangler?\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eYes, its design ensures seamless integration without interfering with soft-top functionality, ideal for those with a \u003c\/span\u003e\u003cem\u003eJeep JK Subwoofer Enclosure\u003c\/em\u003e\u003cspan\u003e in mind.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat about installing dual sub-boxes for enhanced sound?\u003c\/h3\u003e\n\u003cp\u003eAbsolutely, installing a subwoofer enclosure on each side is possible for those seeking superior bass depth, especially for a \u003cem\u003eJKU Subwoofer Box\u003c\/em\u003e setup.\u003cbr\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eKey Features at a Glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003eJeep JK and Unlimited Specific:\u003c\/strong\u003e Custom-designed for the 2007-2017 JK series 4-door Jeep Wrangler, also suitable as a \u003c\/span\u003e\u003cem\u003eJeep Wrangler JK 4 Door Subwoofer Box\u003c\/em\u003e\u003cspan\u003e. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003eOptimal Space and Sound Balance:\u003c\/strong\u003e It delivers powerful bass without compromising cargo space, making it an ideal choice for a Jeep JK 2-Door Subwoofer\u003c\/span\u003e\u003cem\u003e Box\u003c\/em\u003e\u003cspan\u003e. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003eSuperior Bass Performance:\u003c\/strong\u003e This enclosure supports 10\" or 12\" subwoofers for exceptional sound, making it a must-have for any \u003c\/span\u003e\u003cem\u003eJeep JK Subwoofer Enclosure\u003c\/em\u003e\u003cspan\u003e. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003eSturdy and Durable:\u003c\/strong\u003e It has a 100% MDF construction and an interior bed liner for enhanced sound, perfect for \u003c\/span\u003e\u003cem\u003eJKU Subwoofer Box\u003c\/em\u003e\u003cspan\u003e enthusiasts. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003eFlexible Installation:\u003c\/strong\u003e Fits both sides of the Jeep and is compatible with soft-top models, offering versatility for \u003c\/span\u003e\u003cem\u003eJeep Wrangler JK 4 Door Subwoofer Box\u003c\/em\u003e\u003cspan\u003e installations. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003e\u003cstrong\u003eElegant Plush Black Carpet:\u003c\/strong\u003e This carpet comes standard for a sophisticated look and added protection, enhancing the aesthetic of your Jeep JK Subwoofer Box.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003e Option for Extra Durability\u003c\/strong\u003e: An exterior\u003c\/span\u003e\u003cspan\u003e bed liner coating is available for increased toughness, ideal for rugged \u003c\/span\u003e\u003cem\u003eJeep JK Subwoofer Enclosures\u003c\/em\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan\u003e\u003cstrong\u003e Customization Options:\u003c\/strong\u003e Acrylic inserts are available for a personalized aesthetic, adding a unique touch to your \u003c\/span\u003e\u003cem\u003eJKU Subwoofer Box\u003c\/em\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003eTransform the sound experience in your Jeep Wrangler with the Proline X Custom Subwoofer Enclosure for Jeep JK, offering rugged durability, exceptional audio performance, and the perfect fit for your lifestyle. Enjoy the added perk of free shipping in the lower 48 US states and the convenience of included mounting hardware for straightforward installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e***Does Not include a subwoofer. \u003c\/p\u003e","brand":"Proline X","offers":[{"title":"12\" \/ Driver Side \/ No","offer_id":40911379333209,"sku":"VS JK 12-S D","price":599.99,"currency_code":"USD","in_stock":false},{"title":"12\" \/ Driver Side \/ Yes","offer_id":40911379267673,"sku":"VS JK 12-S D Acr","price":679.99,"currency_code":"USD","in_stock":false},{"title":"12\" \/ Passenger Side \/ No","offer_id":40911379365977,"sku":"VS JK 12-S P","price":599.99,"currency_code":"USD","in_stock":false},{"title":"12\" \/ Passenger Side \/ Yes","offer_id":40911379300441,"sku":"VS JK 12-S P Acr","price":679.99,"currency_code":"USD","in_stock":false},{"title":"10\" \/ Driver Side \/ No","offer_id":40911379202137,"sku":"VS JK 10-S D","price":599.99,"currency_code":"USD","in_stock":false},{"title":"10\" \/ Driver Side \/ Yes","offer_id":40911379136601,"sku":"VS JK 10-S D Acr","price":679.99,"currency_code":"USD","in_stock":false},{"title":"10\" \/ Passenger Side \/ No","offer_id":40911379234905,"sku":"VS JK 10-S P","price":599.99,"currency_code":"USD","in_stock":false},{"title":"10\" \/ Passenger Side \/ Yes","offer_id":40911379169369,"sku":"VS JK 10-S P Acr","price":679.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/jeep-jk-subwoofer-box-2007-2017-4-doorproline-x-295493.jpg?v=1761970108"},{"product_id":"professional-series-12-inch-ported-box-sundown-sa-series","title":"Professional Series Ported 12\" Enclosure | Sundown Audio SA-12","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap 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0}.df-graph-title{font-size:.78em;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:#a8a29e;margin:0 0 10px}.df-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}.df-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#a8a29e}.df-sw{width:22px;height:3px;border-radius:2px;display:inline-block}.df-note{background:#292524;border:1px solid #44403c;border-radius:8px;padding:14px 16px;margin-top:10px}.df-note p{margin:0;color:#d6d3d1;font-size:13.5px;line-height:1.6}.df-link{color:#7089ff;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:40px 36px;text-align:center;color:#fff}.df-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}.df-tier{overflow-x:auto;margin:18px 0;border:1px solid #44403c;border-radius:8px}.df-tier table{width:100%;border-collapse:collapse;min-width:660px}.df-tier th{background:#0c0a09;color:#a8a29e;font-size:.74em;text-transform:uppercase;letter-spacing:.6px;padding:12px 14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#001264;color:#99abff}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(91,120,255,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProline X Professional 12\" Ported\u003c\/h2\u003e\n  \u003cp\u003eA ported twelve-inch box built to Sundown's own numbers for the SA-12, one cabinet for the Classic, the v.2 and the v.3\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e1.66 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 34.5 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eF3 29.5 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003e2.25\" three-layer baffle\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the SA-12\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-stats\"\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.66\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e34.5\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz tuning\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e29.5\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz F3 anechoic\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e32.6\u003c\/span\u003e\u003cspan class=\"l\"\u003esq in port area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 34.5 Hz\u003c\/h3\u003e\n  \u003cp\u003eThe Sundown Audio SA-12 has shipped in three generations, the SA-Classic 12, the SA-Series v.2 12 and the SA-Series v.3 12, in D2 and D4 coils, and all six fit this one cabinet. The box is solved for the v.3, the deepest and most powerful of the three, with a 12.84 inch frame and an 8.4 inch mounting depth, and it gives the driver 1.66 cubic feet net, vented at 34.5 Hz through a 32.6 square inch slot beside the woofer on the front face. F3 lands at 29.5 Hz with 2.56 dB of passband ripple. The 32.0 by 16.0 by 13.5 inch enclosure carries a single 90 degree bend in the port.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThreaded insert kit ships with this box.\u003c\/strong\u003e Sundown Audio does not publish the mounting hole locations for the SA-12, so we cannot install the threaded inserts before it ships. The threaded insert kit comes in the box instead: 8 to 12 inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, an allen key and woofer gasket tape. You set the inserts when you mount the woofer; one kit serves one woofer.\u003c\/p\u003e\n  \u003cp\u003eSundown publishes a Qts of 0.428 for the SA-12 v.3 D2, and it agrees with their own Qes of 0.525 and Qms of 2.308. The gate here is measured at the coil's rated power, 1500 W, and the port stays clean past that rating, modeled to 1697 W before mouth velocity becomes the limiting factor. The v.2 and the Classic are rated lower, 1250 W and 1000 W, so they sit further inside the same port. Ripple across the passband holds at 2.56 dB.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhat makes it Professional\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThree-layer baffle, flush mount\u003c\/h4\u003e\n\u003cp\u003eThree layers of 3\/4 inch Langboard Elite make a 2.25 inch\n    front. The outer layer is routed to the flange, so the woofer sits flush with the face; the two layers behind it\n    carry the mounting hardware and the load.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSundown Audio logo acrylic\u003c\/h4\u003e\n\u003cp\u003eA glossy black acrylic insert with the Sundown Audio mark sits in the outer\n    layer beside the woofer. It is standard on every Professional cabinet.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThreaded insert kit ships with this box\u003c\/h4\u003e\n\u003cp\u003eThreaded insert kit included, inserts NOT pre-installed: the manufacturer publishes no mounting hole locations, so the kit ships with the box for installation when the woofer goes in: 8 to 12 inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, allen key and gasket tape.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003ePort gated at 1500 W\u003c\/h4\u003e\n\u003cp\u003eThe 32.6 square inch slot beside the woofer is sized so the\n    channel runs 24.7 metres per second and the mouth 16.0 metres per second at the driver's rated power, under the\n    17 metres per second where a slot starts to chuff. The channel runs 7.50 inches along its wall and turns once along the back wall for another 21.47 inches, which is why a 34.5 Hz tuning fits a 13.50 inch deep box.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eWhy this is a Professional build\u003c\/h4\u003e\n\u003cp\u003eEvery driver is run through the Performance Optimized wedge and down-fire before this chassis; the Professional box is where a driver lands when that smaller envelope, 30 inches wide and 18 inches deep with a triangular side port, cannot give it what it needs at its rated power. The SA-12 did not clear the port gate there. The calmest wedge port that fits that envelope is 24.7 square inches at 29.0 by 11.62 by 17.27 inches, and its mouth runs 22.4 metres per second at 1500 W against the 17 metres per second line where a port starts to chuff. That port would stay clean to about 865 W. The slot on this box reaches 32.6 square inches and holds the mouth at 16.0 metres per second at 1500 W.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eWhat the price covers\u003c\/h4\u003e\n\u003cp\u003eEvery Professional cabinet is priced the same way, by its size: this one is 4.00 cubic feet outside. Delivery to the 48 states is inside the price; it ships as a 70 lb parcel and checkout adds nothing. The Performance Optimized 12 inch ported wedge is $399.99. The $80 difference is the larger box and the port this driver needs to run at its rating.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eWhat Sundown Audio recommend\u003c\/h4\u003e\n\u003cp\u003eSundown Audio publish a vented box for the SA-12 at 1.75 cubic feet on a basis they do not state, tuned to 35.0 Hz. This cabinet holds 1.66 cubic feet net and tunes to 34.5 Hz. They call for a port area of 26 sq in.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe cabinet\u003c\/h3\u003e\n  \u003cp\u003e32.00\" W x 16.00\" H x 13.50\" D external. Two windowed braces run front to back either side of the woofer, clearing the cutout by two and a half inches. The box ships dry: polyfill detunes a ported alignment. This is our single-twelve ported envelope built around the SA-12's frame and the v.3's motor depth, so any generation of the driver drops in. It ships as a parcel.\u003c\/p\u003e\n  \u003cp\u003eNothing about this SA-12 build needed an estimate: frame, cutout and mounting depth are Sundown's own published dimensions for each generation, and the cabinet is checked through every gate for all six coil and generation combinations. The cutout is cut for the v.3 at 11.2 inches; the Classic and v.2 baskets are within two tenths of an inch of it and their flanges cover it. Sundown Audio does not publish the mounting hole locations for the SA-12, so we cannot install the threaded inserts before it ships. The threaded insert kit comes in the box instead: 8 to 12 inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, an allen key and woofer gasket tape. You set the inserts when you mount the woofer; one kit serves one woofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe numbers to respect\u003c\/h3\u003e\n  \n  \u003cp\u003eSet a 27 Hz subsonic filter, 24 dB per octave. Below tuning the vent stops loading the cone; with the filter in\n  place the cone reaches 9.9 mm of its 22.0 mm at 1500 W.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":40987989540953,"sku":"Pro 12-P SA12","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/12-inch-ported-box-for-sundown-sa-12subwoofer-enclosuresproline-x-850136.jpg?v=1761970121"},{"product_id":"professional-series-enclosure-image-dynamics-idmax-12-sealed-box","title":"Professional Series Sealed 12\" Enclosure | Image Dynamics IDMAX12 V4","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero 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10px}.df-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}.df-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#a8a29e}.df-sw{width:22px;height:3px;border-radius:2px;display:inline-block}.df-note{background:#292524;border:1px solid #44403c;border-radius:8px;padding:14px 16px;margin-top:10px}.df-note p{margin:0;color:#d6d3d1;font-size:13.5px;line-height:1.6}.df-link{color:#7089ff;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:40px 36px;text-align:center;color:#fff}.df-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}.df-tier{overflow-x:auto;margin:18px 0;border:1px solid #44403c;border-radius:8px}.df-tier table{width:100%;border-collapse:collapse;min-width:660px}.df-tier th{background:#0c0a09;color:#a8a29e;font-size:.74em;text-transform:uppercase;letter-spacing:.6px;padding:12px 14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#001264;color:#99abff}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(91,120,255,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProfessional Series Sealed 12\" Enclosure | Image Dynamics IDMAX12 V4\u003c\/h2\u003e\n  \u003cp\u003eThe IDMAX12 V4 shares the IDMAX10's tight suspension and heavy motor, scaled up, and Image Dynamics again recommend a sealed box over a ported one. This cabinet holds 1.10 cubic feet net, landing the D2 coil at a Qtc of 1.15 and an Fc of 47.4 Hz. It is the single-driver sealed box in the professional Image Dynamics line sized for the larger frame.\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003eSealed\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eQtc 1.15\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eF3 35.3 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the Image Dynamics IDMAX12 V4\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is sealed\u003c\/h3\u003e\n  \u003cp\u003eThe IDMAX12 V4 shares the IDMAX10's tight suspension and heavy motor, scaled up, and Image Dynamics again recommend a sealed box over a ported one. This cabinet holds 1.10 cubic feet net, landing the D2 coil at a Qtc of 1.15 and an Fc of 47.4 Hz. It is the single-driver sealed box in the professional Image Dynamics line sized for the larger frame.\u003c\/p\u003e\n  \u003cp\u003eA Qtc of 1.15 sits a step above the IDMAX10's 1.01: a punchy sealed box with about 2 dB of lift near Fc rather than a deep-reaching one. Image Dynamics' own manual lists three sealed volumes for the IDMAX12, a Compact box at 44 Hz, a Universal box at 40 Hz, and an Audiophile box at 37 Hz, all gross including the driver's displacement. This cabinet's 1.10 cubic feet net works out to about one and a quarter cubic feet gross, close to their Universal figure. F3 on this box comes out to 35.3 Hz.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe alignment\u003c\/h3\u003e\n  \u003cp\u003e1.100 cu ft net at Qtc 1.15, Fc 47.4 Hz, F3 35.3 Hz.\u003c\/p\u003e\n  \u003cp\u003ePolyfill is included, sized to the chamber. It is part of the alignment above, not packing material, so it\n  should not be removed.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe cabinet\u003c\/h3\u003e\n  \u003cp\u003e24.00\" W x 14.00\" H x 10.00\" D external. It ships as a UPS parcel; the price includes shipping in the 48 states.\u003c\/p\u003e\n  \u003cp\u003eThis is our single-twelve sealed envelope for one IDMAX12, sized to the driver's larger frame and motor depth.\u003c\/p\u003e\n  \u003cp\u003eT\/S for the IDMAX12 D2 come from loudspeakerdatabase.com's mirror of Image Dynamics' own coil-specific publication; Vas here is derived from the other T\/S rather than a number Image Dynamics print directly. Scott's Q2 catalog sheet lists this cabinet at 23 by 14 by 10 inches; the store's 24 by 14 by 10 is what actually shipped and is the figure used here. Image Dynamics recommend a sealed box for the IDMAX12, and this cabinet is exactly that.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43152031055961,"sku":"Pro12-S IDMAX","price":280.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-image-dynamics-idmax-12-sealed-subwoofer-enclosure-professional-seriessubwoofer-enclosuresproline-x-8379089.webp?v=1773729547"},{"product_id":"proline-x-sealed-12-enclosure-loaded-image-dynamics-idmax-12","title":"Proline-X Sealed 12\" Enclosure – Loaded with Image Dynamics IDMAX 12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap *{box-sizing:border-box;}\n.pl-hero{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:54px 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14px;border-left:4px solid #8b5cf6;padding-left:14px;}\n.pl-enc p{margin:0 0 14px;color:#cbd5e1;}\n.pl-enc-card{background:#1e293b;border:1px solid #334155;border-radius:8px;overflow:hidden;margin:18px 0;}\n.pl-enc-head{padding:12px 16px;font-size:.82em;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#c4b5fd;background:#2e1065;}\n.pl-enc-table{width:100%;border-collapse:collapse;}\n.pl-enc-table th{background:#020617;color:#94a3b8;font-size:.78em;text-transform:uppercase;letter-spacing:.5px;padding:10px 14px;text-align:left;border-bottom:1px solid #334155;}\n.pl-enc-table td{padding:12px 14px;border-bottom:1px solid #1e293b;color:#cbd5e1;font-size:.95em;}\n.pl-enc-table tr:last-child td{border-bottom:none;}\n.pl-opt td{background:#2e1065;color:#fff;font-weight:600;}\n.pl-char{display:block;font-size:.78em;color:#94a3b8;font-weight:400;margin-top:2px;}\n.pl-opt .pl-char{color:#c4b5fd;}\n.pl-graph{background:#020617;border:1px solid #334155;border-radius:8px;padding:14px;margin:18px 0;}\n.pl-graph-title{font-size:.78em;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:#94a3b8;margin:0 0 10px;}\n.pl-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;}\n.pl-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#94a3b8;}\n.pl-sw{width:22px;height:3px;border-radius:2px;display:inline-block;}\n.pl-note{background:#1e293b;border:1px solid #334155;border-radius:8px;padding:14px 16px;margin-top:6px;}\n.pl-note p{margin:0;color:#cbd5e1;font-size:13.5px;line-height:1.6;}\n.pl-link{color:#a78bfa;text-decoration:underline;}\n.pl-cta{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:40px 36px;text-align:center;color:#fff;}\n.pl-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Professional Series Enclosure for the Image Dynamics IDMAX12 V4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Image Dynamics IDMAX12 V4\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e1.10 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Image Dynamics IDMAX12 V4\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.10\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.139\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e35 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e8.15 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eIDMAX12 V4 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Image Dynamics IDMAX12 V4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the IDMAX12 V4's published sealed target, with the baffle bored to the IDMAX12 V4's 11.0 in cutout with threaded inserts matched to the driver's bolt pattern, and clearance cut for its 8.15 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe IDMAX12 V4 carries a published \u003cstrong\u003eFs of 26 Hz, Qts of 0.626 and Vas of 71.89 litres\u003c\/strong\u003e, and an EBP of 36, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e1.10 cubic feet net\u003c\/strong\u003e. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Professional Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is cut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nThe panels are V-grooved and folded on the seam and dadoed where the bracing lands. Baffles are double layer minimum, with threaded inserts set to the driver's own bolt pattern.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDouble Layer Baffle\u003c\/h4\u003e\n\u003cp\u003eThe baffle is two layers minimum with threaded inserts matched to the driver's own bolt pattern, so mounting hardware loads into steel rather than into MDF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own IDMAX12 V4, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Image Dynamics IDMAX12 V4, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eImage Dynamics IDMAX12 V4 D2  |  Qts 0.626  |  Fs 26 Hz  |  Vas 71.89 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e1.10 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.139\u003c\/td\u003e\n\u003ctd\u003e47.3 Hz\u003c\/td\u003e\n\u003ctd\u003e35.4 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eImage Dynamics IDMAX12 V4 Frequency Response | Sealed, 1.10 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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sans-serif\"\u003e-6dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"121.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"66.8\" y2=\"66.8\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"70.8\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e0dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"16.0\" y2=\"16.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"20.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#8b5cf6\" stroke-width=\"1.4\" stroke-dasharray=\"4 3\" opacity=\"0.85\"\u003e\u003c\/line\u003e\n\u003ctext x=\"660\" y=\"112.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#a78bfa\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42.0\" x2=\"42.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"42.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e20Hz\u003c\/text\u003e\n\u003cline x1=\"135.1\" x2=\"135.1\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"135.1\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e30Hz\u003c\/text\u003e\n\u003cline x1=\"252.5\" x2=\"252.5\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"252.5\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, 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209.9,72.9 212.0,70.8 214.1,68.7 216.2,66.7 218.2,64.7 220.3,62.8 222.4,60.9 224.5,59.1 226.5,57.4 228.6,55.7 230.7,54.0 232.7,52.5 234.8,51.0 236.9,49.5 239.0,48.2 241.0,46.8 243.1,45.6 245.2,44.4 247.3,43.3 249.3,42.2 251.4,41.2 253.5,40.2 255.6,39.3 257.6,38.5 259.7,37.7 261.8,37.0 263.8,36.3 265.9,35.7 268.0,35.2 270.1,34.7 272.1,34.2 274.2,33.8 276.3,33.4 278.4,33.1 280.4,32.8 282.5,32.6 284.6,32.4 286.7,32.3 288.7,32.1 290.8,32.0 292.9,32.0 294.9,32.0 297.0,32.0 299.1,32.0 301.2,32.1 303.2,32.1 305.3,32.2 307.4,32.4 309.5,32.5 311.5,32.7 313.6,32.9 315.7,33.1 317.8,33.3 319.8,33.6 321.9,33.8 324.0,34.1 326.0,34.3 328.1,34.6 330.2,34.9 332.3,35.2 334.3,35.5 336.4,35.8 338.5,36.2 340.6,36.5 342.6,36.8 344.7,37.2 346.8,37.5 348.9,37.8 350.9,38.2 353.0,38.5 355.1,38.9 357.1,39.3 359.2,39.6 361.3,40.0 363.4,40.3 365.4,40.7 367.5,41.0 369.6,41.4 371.7,41.7 373.7,42.1 375.8,42.4 377.9,42.8 380.0,43.1 382.0,43.5 384.1,43.8 386.2,44.2 388.2,44.5 390.3,44.8 392.4,45.2 394.5,45.5 396.5,45.8 398.6,46.1 400.7,46.4 402.8,46.8 404.8,47.1 406.9,47.4 409.0,47.7 411.1,48.0 413.1,48.3 415.2,48.6 417.3,48.9 419.3,49.2 421.4,49.4 423.5,49.7 425.6,50.0 427.6,50.3 429.7,50.5 431.8,50.8 433.9,51.1 435.9,51.3 438.0,51.6 440.1,51.8 442.2,52.1 444.2,52.3 446.3,52.6 448.4,52.8 450.4,53.0 452.5,53.3 454.6,53.5 456.7,53.7 458.7,54.0 460.8,54.2 462.9,54.4 465.0,54.6 467.0,54.8 469.1,55.0 471.2,55.2 473.3,55.4 475.3,55.6 477.4,55.8 479.5,56.0 481.5,56.2 483.6,56.3 485.7,56.5 487.8,56.7 489.8,56.9 491.9,57.0 494.0,57.2 496.1,57.4 498.1,57.5 500.2,57.7 502.3,57.9 504.4,58.0 506.4,58.2 508.5,58.3 510.6,58.5 512.6,58.6 514.7,58.8 516.8,58.9 518.9,59.0 520.9,59.2 523.0,59.3 525.1,59.4 527.2,59.6 529.2,59.7 531.3,59.8 533.4,59.9 535.5,60.0 537.5,60.2 539.6,60.3 541.7,60.4 543.7,60.5 545.8,60.6 547.9,60.7 550.0,60.8 552.0,60.9 554.1,61.0 556.2,61.1 558.3,61.2 560.3,61.3 562.4,61.4 564.5,61.5 566.6,61.6 568.6,61.7 570.7,61.8 572.8,61.9 574.8,62.0 576.9,62.1 579.0,62.1 581.1,62.2 583.1,62.3 585.2,62.4 587.3,62.5 589.4,62.5 591.4,62.6 593.5,62.7 595.6,62.8 597.7,62.8 599.7,62.9 601.8,63.0 603.9,63.0 605.9,63.1 608.0,63.2 610.1,63.2 612.2,63.3 614.2,63.4 616.3,63.4 618.4,63.5 620.5,63.5 622.5,63.6 624.6,63.7 626.7,63.7 628.8,63.8 630.8,63.8 632.9,63.9 635.0,63.9 637.0,64.0 639.1,64.0 641.2,64.1 643.3,64.1 645.3,64.2 647.4,64.2 649.5,64.3 651.6,64.3 653.6,64.4 655.7,64.4 657.8,64.4 659.9,64.5 661.9,64.5 664.0,64.6\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e1.10 cu ft (Qtc 1.139)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the D2 set. The D4 IDMAX12 V4 carries Qts 0.758 and Vas 62.44 litres, which in this same 1.10 cubic foot volume lands at \u003cstrong\u003eQtc 1.314, Fc 45.1 Hz and F3 32.4 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the IDMAX12 V4 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dual 2 Ohm","offer_id":42101816655961,"sku":"Pro12-S IDMAX D2","price":799.99,"currency_code":"USD","in_stock":true},{"title":"Dual 4 Ohm","offer_id":42101816688729,"sku":"Pro12-S IDMAX D4","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/image-dynamics-idmax-12-loaded-subwoofer-enclosure-sealedsubwoofer-enclosuresproline-x-469164.jpg?v=1761970369"},{"product_id":"2024-2025-ford-f150-f250-behind-seat-single-12-enclosure-loaded-wavtech-thinpro-12","title":"2024-2026 Ford F-150\/F-250\/F-350 Behind-Seat Single 12\" Enclosure – Loaded with Wavtech thinPRO12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 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h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Vehicle Specific Series Enclosure for the Wavtech thinPRO 12\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Wavtech thinPRO 12, built to drop into the 2024-2026 F-150, F-250 and F-350\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e0.60 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Wavtech thinPRO 12\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e2024-2026 F-150\/250\/350\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.60\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.913\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e38 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.0 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ethinPRO 12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;\"\u003e\u003ciframe style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" title=\"2024-2026 Ford F-150 Direct Fit Ford Series Loaded 12 inch Subwoofer Enclosure – Wavtech ThinPro 12\" src=\"https:\/\/www.youtube.com\/embed\/NVWJ5D6uSTE\" width=\"800\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Wavtech thinPRO 12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the thinPRO 12's published sealed target, with the baffle bored to the thinPRO 12's 11.125 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.0 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe thinPRO 12 carries a published \u003cstrong\u003eFs of 25 Hz, Qts of 0.49 and Vas of 42 litres\u003c\/strong\u003e, and an EBP of 45, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.60 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.6 cu ft. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Vehicle Specific Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEach layer is cut to the cab profile and the stack does the joining. Dowel reinforcement runs between layers as tension hardware only, which is what lets the shell follow a behind seat contour without a corner joint in it.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own thinPRO 12, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Wavtech thinPRO 12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eWavtech thinPRO 12 thinPRO12-2  |  Qts 0.49  |  Fs 25 Hz  |  Vas 42 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.60 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.913\u003c\/td\u003e\n\u003ctd\u003e46.6 Hz\u003c\/td\u003e\n\u003ctd\u003e38.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eWavtech thinPRO 12 Frequency Response | Sealed, 0.60 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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sans-serif\"\u003e-6dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"121.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"66.8\" y2=\"66.8\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"70.8\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e0dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"16.0\" y2=\"16.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"20.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#8b5cf6\" stroke-width=\"1.4\" stroke-dasharray=\"4 3\" opacity=\"0.85\"\u003e\u003c\/line\u003e\n\u003ctext x=\"660\" y=\"112.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#a78bfa\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42.0\" x2=\"42.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"42.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e20Hz\u003c\/text\u003e\n\u003cline x1=\"135.1\" x2=\"135.1\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"135.1\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e30Hz\u003c\/text\u003e\n\u003cline x1=\"252.5\" x2=\"252.5\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"252.5\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e50Hz\u003c\/text\u003e\n\u003cline x1=\"411.7\" x2=\"411.7\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"411.7\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e100Hz\u003c\/text\u003e\n\u003cline x1=\"570.9\" x2=\"570.9\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"570.9\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e200Hz\u003c\/text\u003e\n\u003cline x1=\"664.0\" x2=\"664.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"664.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e300Hz\u003c\/text\u003e\n\u003crect x=\"42\" y=\"16\" width=\"622\" height=\"254\" fill=\"none\" stroke=\"#334155\" 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207.9,102.0 209.9,100.2 212.0,98.4 214.1,96.6 216.2,94.9 218.2,93.2 220.3,91.5 222.4,89.9 224.5,88.3 226.5,86.8 228.6,85.3 230.7,83.9 232.7,82.4 234.8,81.1 236.9,79.7 239.0,78.4 241.0,77.2 243.1,76.0 245.2,74.8 247.3,73.7 249.3,72.6 251.4,71.5 253.5,70.5 255.6,69.5 257.6,68.6 259.7,67.7 261.8,66.8 263.8,66.0 265.9,65.2 268.0,64.4 270.1,63.7 272.1,63.0 274.2,62.3 276.3,61.7 278.4,61.1 280.4,60.5 282.5,60.0 284.6,59.5 286.7,59.0 288.7,58.6 290.8,58.1 292.9,57.7 294.9,57.4 297.0,57.0 299.1,56.7 301.2,56.4 303.2,56.1 305.3,55.8 307.4,55.6 309.5,55.4 311.5,55.2 313.6,55.0 315.7,54.8 317.8,54.7 319.8,54.6 321.9,54.4 324.0,54.3 326.0,54.2 328.1,54.2 330.2,54.1 332.3,54.1 334.3,54.0 336.4,54.0 338.5,54.0 340.6,54.0 342.6,54.0 344.7,54.0 346.8,54.0 348.9,54.0 350.9,54.1 353.0,54.1 355.1,54.1 357.1,54.2 359.2,54.3 361.3,54.3 363.4,54.4 365.4,54.5 367.5,54.5 369.6,54.6 371.7,54.7 373.7,54.8 375.8,54.9 377.9,55.0 380.0,55.1 382.0,55.2 384.1,55.3 386.2,55.4 388.2,55.5 390.3,55.6 392.4,55.7 394.5,55.9 396.5,56.0 398.6,56.1 400.7,56.2 402.8,56.3 404.8,56.4 406.9,56.6 409.0,56.7 411.1,56.8 413.1,56.9 415.2,57.1 417.3,57.2 419.3,57.3 421.4,57.4 423.5,57.5 425.6,57.7 427.6,57.8 429.7,57.9 431.8,58.0 433.9,58.1 435.9,58.3 438.0,58.4 440.1,58.5 442.2,58.6 444.2,58.7 446.3,58.8 448.4,58.9 450.4,59.1 452.5,59.2 454.6,59.3 456.7,59.4 458.7,59.5 460.8,59.6 462.9,59.7 465.0,59.8 467.0,59.9 469.1,60.0 471.2,60.1 473.3,60.2 475.3,60.3 477.4,60.4 479.5,60.5 481.5,60.6 483.6,60.7 485.7,60.8 487.8,60.9 489.8,61.0 491.9,61.1 494.0,61.2 496.1,61.3 498.1,61.4 500.2,61.4 502.3,61.5 504.4,61.6 506.4,61.7 508.5,61.8 510.6,61.9 512.6,61.9 514.7,62.0 516.8,62.1 518.9,62.2 520.9,62.2 523.0,62.3 525.1,62.4 527.2,62.5 529.2,62.5 531.3,62.6 533.4,62.7 535.5,62.7 537.5,62.8 539.6,62.9 541.7,62.9 543.7,63.0 545.8,63.1 547.9,63.1 550.0,63.2 552.0,63.3 554.1,63.3 556.2,63.4 558.3,63.4 560.3,63.5 562.4,63.5 564.5,63.6 566.6,63.7 568.6,63.7 570.7,63.8 572.8,63.8 574.8,63.9 576.9,63.9 579.0,64.0 581.1,64.0 583.1,64.1 585.2,64.1 587.3,64.1 589.4,64.2 591.4,64.2 593.5,64.3 595.6,64.3 597.7,64.4 599.7,64.4 601.8,64.4 603.9,64.5 605.9,64.5 608.0,64.6 610.1,64.6 612.2,64.6 614.2,64.7 616.3,64.7 618.4,64.8 620.5,64.8 622.5,64.8 624.6,64.9 626.7,64.9 628.8,64.9 630.8,65.0 632.9,65.0 635.0,65.0 637.0,65.1 639.1,65.1 641.2,65.1 643.3,65.1 645.3,65.2 647.4,65.2 649.5,65.2 651.6,65.3 653.6,65.3 655.7,65.3 657.8,65.3 659.9,65.4 661.9,65.4 664.0,65.4\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.60 cu ft (Qtc 0.913)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the thinPRO12-2 set. The thinPRO12-4 carries Qts 0.46 and Vas 42 litres, and a different Fs of 26 Hz, which in this same 0.60 cubic foot volume lands at \u003cstrong\u003eQtc 0.857, Fc 48.4 Hz and F3 41.4 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the thinPRO 12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"2 ohm","offer_id":42207741313113,"sku":"VS FD2 12-S WAV S2","price":1199.99,"currency_code":"USD","in_stock":true},{"title":"4 ohm","offer_id":42207741280345,"sku":"VS FD2 12-S WAV S4","price":1199.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/2024-2025-ford-f-150-direct-fit-ford-series-loaded-12-inch-subwoofer-enclosure-wavtech-thinpro-12subwoofer-enclosuresproline-x-955517.jpg?v=1761970408"},{"product_id":"2015-2023-ford-f150-f250-behind-seat-single-12-enclosure-loaded-wavtech-thinpro-12","title":"2015-2023 Ford F-150\/F-250 Behind-Seat Single 12\" Enclosure – Loaded with Wavtech thinPRO12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica 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h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Vehicle Specific Series Enclosure for the Wavtech thinPRO 12\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Wavtech thinPRO 12, built to drop into the 2015-2023 F-150, 2017-2023 F-250\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e0.60 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Wavtech thinPRO 12\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e2015-2023 F-150, 2017-2023 F-250\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.60\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.913\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e38 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.0 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ethinPRO 12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Wavtech thinPRO 12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the thinPRO 12's published sealed target, with the baffle bored to the thinPRO 12's 11.125 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.0 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe thinPRO 12 carries a published \u003cstrong\u003eFs of 25 Hz, Qts of 0.49 and Vas of 42 litres\u003c\/strong\u003e, and an EBP of 45, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.60 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.6 cu ft. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Vehicle Specific Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEach layer is cut to the cab profile and the stack does the joining. Dowel reinforcement runs between layers as tension hardware only, which is what lets the shell follow a behind seat contour without a corner joint in it.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own thinPRO 12, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Wavtech thinPRO 12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eWavtech thinPRO 12 thinPRO12-2  |  Qts 0.49  |  Fs 25 Hz  |  Vas 42 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.60 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.913\u003c\/td\u003e\n\u003ctd\u003e46.6 Hz\u003c\/td\u003e\n\u003ctd\u003e38.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eWavtech thinPRO 12 Frequency Response | Sealed, 0.60 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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583.1,64.1 585.2,64.1 587.3,64.1 589.4,64.2 591.4,64.2 593.5,64.3 595.6,64.3 597.7,64.4 599.7,64.4 601.8,64.4 603.9,64.5 605.9,64.5 608.0,64.6 610.1,64.6 612.2,64.6 614.2,64.7 616.3,64.7 618.4,64.8 620.5,64.8 622.5,64.8 624.6,64.9 626.7,64.9 628.8,64.9 630.8,65.0 632.9,65.0 635.0,65.0 637.0,65.1 639.1,65.1 641.2,65.1 643.3,65.1 645.3,65.2 647.4,65.2 649.5,65.2 651.6,65.3 653.6,65.3 655.7,65.3 657.8,65.3 659.9,65.4 661.9,65.4 664.0,65.4\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.60 cu ft (Qtc 0.913)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the thinPRO12-2 set. The thinPRO12-4 carries Qts 0.46 and Vas 42 litres, and a different Fs of 26 Hz, which in this same 0.60 cubic foot volume lands at \u003cstrong\u003eQtc 0.857, Fc 48.4 Hz and F3 41.4 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the thinPRO 12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Single 2 ohm","offer_id":42327034200153,"sku":"VS FD1 12-S WAV S2","price":1099.99,"currency_code":"USD","in_stock":true},{"title":"Single 4 ohm","offer_id":42327034232921,"sku":"VS FD1 12-S WAV S4","price":1099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/2015-2023-ford-f-150-2017-2023-f-250-direct-fit-ford-series-loaded-subwoofer-enclosure-wavtech-thinpro12proline-x-112501.jpg?v=1761970462"},{"product_id":"proline-x-micro-series-sealed-dual-12-enclosure-loaded-wavtech-thinpro-12","title":"Proline X Dual 12\" Sealed Micro Series System | Loaded with Wavtech thinPRO12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 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h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Micro Series Enclosure for the Wavtech thinPRO 12\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of Wavtech thinPRO 12 drivers\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e1.20 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Wavtech thinPRO 12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.20\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.857\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e41.4 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.0 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ethinPRO 12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Wavtech thinPRO 12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the thinPRO 12's published sealed target, with the baffle bored to the thinPRO 12's 11.125 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.0 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe thinPRO 12 carries a published \u003cstrong\u003eFs of 25 Hz, Qts of 0.49 and Vas of 42 litres\u003c\/strong\u003e, and an EBP of 45, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eTwo Drivers, Two Sealed Chambers\u003c\/h3\u003e\n\u003cp\u003eA full divider splits this cabinet down the middle. Each thinPRO 12 gets its own \u003cstrong\u003e0.60 cubic foot\u003c\/strong\u003e sealed volume, 1.20 cubic feet total. Neither driver sees the other's back pressure, so the pair behaves like two matched single builds rather than one shared chamber.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Micro Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEvery layer is a precision cut ring and the stacked layers do the joining themselves, so there is no butt joint or dado to flex or leak. Dowel reinforcement runs between layers as tension hardware only.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own pair of thinPRO 12 drivers, or order it loaded and we mount the drivers, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Wavtech thinPRO 12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eWavtech thinPRO 12 thinPRO12-2  |  Qts 0.49  |  Fs 25 Hz  |  Vas 42 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.60 cu ft \u003cspan class=\"pl-char\"\u003eper chamber, 1.20 cu ft total\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.913\u003c\/td\u003e\n\u003ctd\u003e46.6 Hz\u003c\/td\u003e\n\u003ctd\u003e38.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eWavtech thinPRO 12 Frequency Response | Sealed, 0.60 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\n\u003crect x=\"0\" y=\"0\" width=\"680\" height=\"300\" fill=\"#0f172a\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"270.0\" y2=\"270.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"274.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-12dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"219.2\" y2=\"219.2\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"223.2\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-9dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"168.4\" y2=\"168.4\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"172.4\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, 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opacity=\"0.85\"\u003e\u003c\/line\u003e\n\u003ctext x=\"660\" y=\"112.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#a78bfa\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42.0\" x2=\"42.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"42.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e20Hz\u003c\/text\u003e\n\u003cline x1=\"135.1\" x2=\"135.1\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"135.1\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e30Hz\u003c\/text\u003e\n\u003cline x1=\"252.5\" x2=\"252.5\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"252.5\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e50Hz\u003c\/text\u003e\n\u003cline x1=\"411.7\" x2=\"411.7\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"411.7\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e100Hz\u003c\/text\u003e\n\u003cline x1=\"570.9\" x2=\"570.9\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"570.9\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e200Hz\u003c\/text\u003e\n\u003cline x1=\"664.0\" x2=\"664.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"664.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e300Hz\u003c\/text\u003e\n\u003crect x=\"42\" y=\"16\" width=\"622\" height=\"254\" fill=\"none\" stroke=\"#334155\" 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207.9,102.0 209.9,100.2 212.0,98.4 214.1,96.6 216.2,94.9 218.2,93.2 220.3,91.5 222.4,89.9 224.5,88.3 226.5,86.8 228.6,85.3 230.7,83.9 232.7,82.4 234.8,81.1 236.9,79.7 239.0,78.4 241.0,77.2 243.1,76.0 245.2,74.8 247.3,73.7 249.3,72.6 251.4,71.5 253.5,70.5 255.6,69.5 257.6,68.6 259.7,67.7 261.8,66.8 263.8,66.0 265.9,65.2 268.0,64.4 270.1,63.7 272.1,63.0 274.2,62.3 276.3,61.7 278.4,61.1 280.4,60.5 282.5,60.0 284.6,59.5 286.7,59.0 288.7,58.6 290.8,58.1 292.9,57.7 294.9,57.4 297.0,57.0 299.1,56.7 301.2,56.4 303.2,56.1 305.3,55.8 307.4,55.6 309.5,55.4 311.5,55.2 313.6,55.0 315.7,54.8 317.8,54.7 319.8,54.6 321.9,54.4 324.0,54.3 326.0,54.2 328.1,54.2 330.2,54.1 332.3,54.1 334.3,54.0 336.4,54.0 338.5,54.0 340.6,54.0 342.6,54.0 344.7,54.0 346.8,54.0 348.9,54.0 350.9,54.1 353.0,54.1 355.1,54.1 357.1,54.2 359.2,54.3 361.3,54.3 363.4,54.4 365.4,54.5 367.5,54.5 369.6,54.6 371.7,54.7 373.7,54.8 375.8,54.9 377.9,55.0 380.0,55.1 382.0,55.2 384.1,55.3 386.2,55.4 388.2,55.5 390.3,55.6 392.4,55.7 394.5,55.9 396.5,56.0 398.6,56.1 400.7,56.2 402.8,56.3 404.8,56.4 406.9,56.6 409.0,56.7 411.1,56.8 413.1,56.9 415.2,57.1 417.3,57.2 419.3,57.3 421.4,57.4 423.5,57.5 425.6,57.7 427.6,57.8 429.7,57.9 431.8,58.0 433.9,58.1 435.9,58.3 438.0,58.4 440.1,58.5 442.2,58.6 444.2,58.7 446.3,58.8 448.4,58.9 450.4,59.1 452.5,59.2 454.6,59.3 456.7,59.4 458.7,59.5 460.8,59.6 462.9,59.7 465.0,59.8 467.0,59.9 469.1,60.0 471.2,60.1 473.3,60.2 475.3,60.3 477.4,60.4 479.5,60.5 481.5,60.6 483.6,60.7 485.7,60.8 487.8,60.9 489.8,61.0 491.9,61.1 494.0,61.2 496.1,61.3 498.1,61.4 500.2,61.4 502.3,61.5 504.4,61.6 506.4,61.7 508.5,61.8 510.6,61.9 512.6,61.9 514.7,62.0 516.8,62.1 518.9,62.2 520.9,62.2 523.0,62.3 525.1,62.4 527.2,62.5 529.2,62.5 531.3,62.6 533.4,62.7 535.5,62.7 537.5,62.8 539.6,62.9 541.7,62.9 543.7,63.0 545.8,63.1 547.9,63.1 550.0,63.2 552.0,63.3 554.1,63.3 556.2,63.4 558.3,63.4 560.3,63.5 562.4,63.5 564.5,63.6 566.6,63.7 568.6,63.7 570.7,63.8 572.8,63.8 574.8,63.9 576.9,63.9 579.0,64.0 581.1,64.0 583.1,64.1 585.2,64.1 587.3,64.1 589.4,64.2 591.4,64.2 593.5,64.3 595.6,64.3 597.7,64.4 599.7,64.4 601.8,64.4 603.9,64.5 605.9,64.5 608.0,64.6 610.1,64.6 612.2,64.6 614.2,64.7 616.3,64.7 618.4,64.8 620.5,64.8 622.5,64.8 624.6,64.9 626.7,64.9 628.8,64.9 630.8,65.0 632.9,65.0 635.0,65.0 637.0,65.1 639.1,65.1 641.2,65.1 643.3,65.1 645.3,65.2 647.4,65.2 649.5,65.2 651.6,65.3 653.6,65.3 655.7,65.3 657.8,65.3 659.9,65.4 661.9,65.4 664.0,65.4\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.60 cu ft (Qtc 0.857)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the thinPRO12-2 set. The thinPRO12-4 carries Qts 0.46 and Vas 42 litres, and a different Fs of 26 Hz, which in this same 0.60 cubic foot volume lands at \u003cstrong\u003eQtc 0.857, Fc 48.4 Hz and F3 41.4 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the thinPRO 12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"4 ohm \/ No Thanks","offer_id":42347678236761,"sku":"M12D-S Wav Loaded 4ohm Final","price":1799.99,"currency_code":"USD","in_stock":true},{"title":"4 ohm \/ Yes- Contact me for details","offer_id":42347680104537,"sku":"Micro 12D-S thinPRO12 4ohm","price":1899.99,"currency_code":"USD","in_stock":false},{"title":"2 ohm \/ No Thanks","offer_id":42347678269529,"sku":"M12D-S Wav Loaded 2ohm final","price":1799.99,"currency_code":"USD","in_stock":false},{"title":"2 ohm \/ Yes- Contact me for details","offer_id":42347680137305,"sku":"Micro 12D-S thinPRO12 2ohm","price":1899.99,"currency_code":"USD","in_stock":false},{"title":"1 ohm \/ No Thanks","offer_id":42347678302297,"sku":"M12D-S Wav Loaded 1 ohm final","price":1799.99,"currency_code":"USD","in_stock":true},{"title":"1 ohm \/ Yes- Contact me for details","offer_id":42347680170073,"sku":"Micro 12D-S thinPRO12 1ohm","price":1899.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/loaded-dual-wavtech-thinpro12-subwoofers-proline-x-micro-series-sealed-enclosureenclosed-subwooferaudio-intensity-504909.jpg?v=1761970494"},{"product_id":"proline-x-micro-series-sealed-12-enclosure-loaded-wavtech-thinpro-12","title":"Proline X Single 12\" Sealed Micro Series System | Loaded with Wavtech thinPRO12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap *{box-sizing:border-box;}\n.pl-hero{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:54px 36px;text-align:center;color:#fff;}\n.pl-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 12px;color:#fff;}\n.pl-hero 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10px;}\n.pl-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;}\n.pl-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#94a3b8;}\n.pl-sw{width:22px;height:3px;border-radius:2px;display:inline-block;}\n.pl-note{background:#1e293b;border:1px solid #334155;border-radius:8px;padding:14px 16px;margin-top:6px;}\n.pl-note p{margin:0;color:#cbd5e1;font-size:13.5px;line-height:1.6;}\n.pl-link{color:#a78bfa;text-decoration:underline;}\n.pl-cta{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:40px 36px;text-align:center;color:#fff;}\n.pl-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Micro Series Enclosure for the Wavtech thinPRO 12\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Wavtech thinPRO 12\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e0.60 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Wavtech thinPRO 12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.60\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.857\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e41.4 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.0 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ethinPRO 12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Wavtech thinPRO 12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the thinPRO 12's published sealed target, with the baffle bored to the thinPRO 12's 11.125 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.0 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe thinPRO 12 carries a published \u003cstrong\u003eFs of 25 Hz, Qts of 0.49 and Vas of 42 litres\u003c\/strong\u003e, and an EBP of 45, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.60 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.6 cu ft. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Micro Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEvery layer is a precision cut ring and the stacked layers do the joining themselves, so there is no butt joint or dado to flex or leak. Dowel reinforcement runs between layers as tension hardware only.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own thinPRO 12, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Wavtech thinPRO 12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eWavtech thinPRO 12 thinPRO12-2  |  Qts 0.49  |  Fs 25 Hz  |  Vas 42 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.60 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.913\u003c\/td\u003e\n\u003ctd\u003e46.6 Hz\u003c\/td\u003e\n\u003ctd\u003e38.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eWavtech thinPRO 12 Frequency Response | Sealed, 0.60 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\n\u003crect x=\"0\" y=\"0\" width=\"680\" height=\"300\" fill=\"#0f172a\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"270.0\" y2=\"270.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"274.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-12dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"219.2\" y2=\"219.2\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"223.2\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-9dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"168.4\" y2=\"168.4\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"172.4\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-6dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"121.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"66.8\" y2=\"66.8\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"70.8\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e0dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"16.0\" y2=\"16.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"20.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#8b5cf6\" stroke-width=\"1.4\" stroke-dasharray=\"4 3\" opacity=\"0.85\"\u003e\u003c\/line\u003e\n\u003ctext x=\"660\" y=\"112.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#a78bfa\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42.0\" x2=\"42.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"42.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e20Hz\u003c\/text\u003e\n\u003cline x1=\"135.1\" x2=\"135.1\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"135.1\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e30Hz\u003c\/text\u003e\n\u003cline x1=\"252.5\" x2=\"252.5\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"252.5\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e50Hz\u003c\/text\u003e\n\u003cline x1=\"411.7\" x2=\"411.7\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"411.7\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e100Hz\u003c\/text\u003e\n\u003cline x1=\"570.9\" x2=\"570.9\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"570.9\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e200Hz\u003c\/text\u003e\n\u003cline x1=\"664.0\" x2=\"664.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"664.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e300Hz\u003c\/text\u003e\n\u003crect x=\"42\" y=\"16\" width=\"622\" height=\"254\" fill=\"none\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\n\u003cpolyline points=\"42.0,270.0 44.1,270.0 46.1,270.0 48.2,270.0 50.3,270.0 52.4,270.0 54.4,270.0 56.5,270.0 58.6,270.0 60.7,270.0 62.7,270.0 64.8,270.0 66.9,270.0 69.0,270.0 71.0,267.8 73.1,265.0 75.2,262.2 77.2,259.5 79.3,256.7 81.4,253.9 83.5,251.2 85.5,248.4 87.6,245.6 89.7,242.9 91.8,240.1 93.8,237.4 95.9,234.6 98.0,231.9 100.1,229.1 102.1,226.4 104.2,223.6 106.3,220.9 108.3,218.2 110.4,215.4 112.5,212.7 114.6,210.0 116.6,207.3 118.7,204.6 120.8,201.9 122.9,199.2 124.9,196.5 127.0,193.8 129.1,191.2 131.2,188.5 133.2,185.9 135.3,183.2 137.4,180.6 139.4,178.0 141.5,175.4 143.6,172.8 145.7,170.2 147.7,167.6 149.8,165.0 151.9,162.5 154.0,160.0 156.0,157.5 158.1,155.0 160.2,152.5 162.3,150.0 164.3,147.6 166.4,145.2 168.5,142.8 170.5,140.4 172.6,138.0 174.7,135.7 176.8,133.4 178.8,131.1 180.9,128.8 183.0,126.6 185.1,124.4 187.1,122.2 189.2,120.0 191.3,117.9 193.4,115.8 195.4,113.7 197.5,111.7 199.6,109.7 201.6,107.7 203.7,105.8 205.8,103.9 207.9,102.0 209.9,100.2 212.0,98.4 214.1,96.6 216.2,94.9 218.2,93.2 220.3,91.5 222.4,89.9 224.5,88.3 226.5,86.8 228.6,85.3 230.7,83.9 232.7,82.4 234.8,81.1 236.9,79.7 239.0,78.4 241.0,77.2 243.1,76.0 245.2,74.8 247.3,73.7 249.3,72.6 251.4,71.5 253.5,70.5 255.6,69.5 257.6,68.6 259.7,67.7 261.8,66.8 263.8,66.0 265.9,65.2 268.0,64.4 270.1,63.7 272.1,63.0 274.2,62.3 276.3,61.7 278.4,61.1 280.4,60.5 282.5,60.0 284.6,59.5 286.7,59.0 288.7,58.6 290.8,58.1 292.9,57.7 294.9,57.4 297.0,57.0 299.1,56.7 301.2,56.4 303.2,56.1 305.3,55.8 307.4,55.6 309.5,55.4 311.5,55.2 313.6,55.0 315.7,54.8 317.8,54.7 319.8,54.6 321.9,54.4 324.0,54.3 326.0,54.2 328.1,54.2 330.2,54.1 332.3,54.1 334.3,54.0 336.4,54.0 338.5,54.0 340.6,54.0 342.6,54.0 344.7,54.0 346.8,54.0 348.9,54.0 350.9,54.1 353.0,54.1 355.1,54.1 357.1,54.2 359.2,54.3 361.3,54.3 363.4,54.4 365.4,54.5 367.5,54.5 369.6,54.6 371.7,54.7 373.7,54.8 375.8,54.9 377.9,55.0 380.0,55.1 382.0,55.2 384.1,55.3 386.2,55.4 388.2,55.5 390.3,55.6 392.4,55.7 394.5,55.9 396.5,56.0 398.6,56.1 400.7,56.2 402.8,56.3 404.8,56.4 406.9,56.6 409.0,56.7 411.1,56.8 413.1,56.9 415.2,57.1 417.3,57.2 419.3,57.3 421.4,57.4 423.5,57.5 425.6,57.7 427.6,57.8 429.7,57.9 431.8,58.0 433.9,58.1 435.9,58.3 438.0,58.4 440.1,58.5 442.2,58.6 444.2,58.7 446.3,58.8 448.4,58.9 450.4,59.1 452.5,59.2 454.6,59.3 456.7,59.4 458.7,59.5 460.8,59.6 462.9,59.7 465.0,59.8 467.0,59.9 469.1,60.0 471.2,60.1 473.3,60.2 475.3,60.3 477.4,60.4 479.5,60.5 481.5,60.6 483.6,60.7 485.7,60.8 487.8,60.9 489.8,61.0 491.9,61.1 494.0,61.2 496.1,61.3 498.1,61.4 500.2,61.4 502.3,61.5 504.4,61.6 506.4,61.7 508.5,61.8 510.6,61.9 512.6,61.9 514.7,62.0 516.8,62.1 518.9,62.2 520.9,62.2 523.0,62.3 525.1,62.4 527.2,62.5 529.2,62.5 531.3,62.6 533.4,62.7 535.5,62.7 537.5,62.8 539.6,62.9 541.7,62.9 543.7,63.0 545.8,63.1 547.9,63.1 550.0,63.2 552.0,63.3 554.1,63.3 556.2,63.4 558.3,63.4 560.3,63.5 562.4,63.5 564.5,63.6 566.6,63.7 568.6,63.7 570.7,63.8 572.8,63.8 574.8,63.9 576.9,63.9 579.0,64.0 581.1,64.0 583.1,64.1 585.2,64.1 587.3,64.1 589.4,64.2 591.4,64.2 593.5,64.3 595.6,64.3 597.7,64.4 599.7,64.4 601.8,64.4 603.9,64.5 605.9,64.5 608.0,64.6 610.1,64.6 612.2,64.6 614.2,64.7 616.3,64.7 618.4,64.8 620.5,64.8 622.5,64.8 624.6,64.9 626.7,64.9 628.8,64.9 630.8,65.0 632.9,65.0 635.0,65.0 637.0,65.1 639.1,65.1 641.2,65.1 643.3,65.1 645.3,65.2 647.4,65.2 649.5,65.2 651.6,65.3 653.6,65.3 655.7,65.3 657.8,65.3 659.9,65.4 661.9,65.4 664.0,65.4\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.60 cu ft (Qtc 0.857)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the thinPRO12-2 set. The thinPRO12-4 carries Qts 0.46 and Vas 42 litres, and a different Fs of 26 Hz, which in this same 0.60 cubic foot volume lands at \u003cstrong\u003eQtc 0.857, Fc 48.4 Hz and F3 41.4 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the thinPRO 12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"4 ohm","offer_id":42349748093017,"sku":"M12-S WAV S4","price":999.99,"currency_code":"USD","in_stock":false},{"title":"2 ohm","offer_id":42349748158553,"sku":"M12-S WAV S2","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-loaded-micro-series-sealed-enclosure-wavtech-thinpro12-subwooferenclosed-subwooferproline-x-4562595.jpg?v=1764960271"},{"product_id":"proline-x-bronco-edition-dual-12-down-firing-sealed-subwoofer-box","title":"Proline X Bronco Edition Dual 12\" Down-Firing Sealed Subwoofer Enclosure","description":"\u003c!-- ============================================================\n     PROLINE X VEHICLE SPECIFIC SERIES — BRONCO EDITION DUAL 12\" DOWN-FIRING\n     PRODUCT DESCRIPTION HTML\n     Color system: Electric Blue (#2563eb \/ #1e40af primary)\n     Enclosure-only SKU\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .vs-wrap * { box-sizing: border-box; }\n  .vs-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; }\n\n  \/* ── Hero ── *\/\n  .vs-hero {\n    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);\n    border-radius: 8px;\n    padding: 40px 36px;\n    margin-bottom: 32px;\n    position: relative;\n    overflow: hidden;\n  }\n  .vs-hero::before {\n    content: '';\n    position: absolute;\n    top: -60px;\n    right: -60px;\n    width: 260px;\n    height: 260px;\n    background: rgba(37, 99, 235, 0.12);\n    border-radius: 50%;\n  }\n  .vs-hero::after {\n    content: '';\n    position: absolute;\n    bottom: -40px;\n    right: 80px;\n    width: 160px;\n    height: 160px;\n    background: rgba(59, 130, 246, 0.08);\n    border-radius: 50%;\n  }\n  .vs-hero-badge {\n    display: inline-block;\n    background: rgba(37, 99, 235, 0.25);\n    color: #93c5fd;\n    font-size: 0.72em;\n    font-weight: 700;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    padding: 4px 14px;\n    border-radius: 3px;\n    border: 1px solid rgba(147, 197, 253, 0.3);\n    margin-bottom: 18px;\n  }\n  .vs-hero h2 {\n    color: #ffffff;\n    font-size: 1.85em;\n    font-weight: 800;\n    margin: 0 0 16px 0;\n    line-height: 1.2;\n  }\n  .vs-hero h2 span { color: #93c5fd; 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border-top: 1px solid #e2e8f0; margin: 32px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"vs-wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv class=\"vs-hero\"\u003e\n    \u003cspan class=\"vs-hero-badge\"\u003eVehicle Specific Series | Bronco Edition | Enclosure Only\u003c\/span\u003e\n    \u003ch2\u003eDual 12\". \u003cspan\u003eDown-Firing.\u003c\/span\u003e\u003cbr\u003eBuilt for the 6th-Gen Bronco.\u003c\/h2\u003e\n    \u003cp\u003eThe Proline X Bronco Edition is a dual 12\" sealed enclosure engineered specifically for the 6th-generation Ford Bronco cargo area. \u003cstrong\u003eDown-firing orientation puts the drivers on the floor, keeps the top surface flat and functional, and uses ground-coupling to load the drivers acoustically.\u003c\/strong\u003e CNC-cut in Tennessee from Langboard Elite MDF. Pre-wired 12g OFC. Feet included. Drop it in, wire it up, and load gear on top.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FITMENT ALERT --\u003e\n  \u003cdiv class=\"vs-fitment-alert\"\u003e\n    \u003cspan class=\"vs-fitment-alert-icon\"\u003eFitment\u003c\/span\u003e\n    \u003cp\u003e\u003cstrong\u003eDesigned for 6th-generation Ford Bronco (2021–2025), 2-door and 4-door.\u003c\/strong\u003e This enclosure sits in the cargo area without factory mounting point integration. Confirm your available cargo dimensions and woofer mounting depth (8\" max) and cutout diameter (11.25\") before ordering.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION: Down-Firing --\u003e\n  \u003cdiv class=\"vs-section\"\u003e\n    \u003ch3\u003eDown-Firing Is Not a Compromise: It's a Design Decision\u003c\/h3\u003e\n    \u003cp\u003eDown-firing subwoofer placement uses the vehicle's floor surface as an acoustic boundary. When a driver fires into a hard, reflective surface at close range, the floor acts as a passive radiating plane. Loading the driver and reinforcing bass output across the low-frequency range. The result is deeper, fuller low-end than the same driver firing into open air in a standard orientation.\u003c\/p\u003e\n    \u003cp\u003eThe secondary function is practical. With both drivers facing down, the top surface of the enclosure is flat, unobstructed, and load-bearing. Gear goes on top. The subwoofers are protected from cargo contact. You don't give up the Bronco's cargo utility to run a real audio system.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHY CARDS --\u003e\n  \u003cdiv class=\"vs-card-grid\"\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003eGround-Coupling Loads Both Drivers Simultaneously\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eDown-firing position places both drivers within inches of the Bronco's cargo floor. The floor acts as an acoustic boundary that loads both woofers simultaneously, reinforcing output and producing a broader, more even low-frequency response than a rear-firing or up-firing configuration in the same space.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003ePolyfill Pre-Installed at the Factory\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eBoth sealed chambers ship with polyfill pre-installed. Polyfill acoustically extends the effective internal volume, improving low-frequency extension without increasing box size. \u003cstrong\u003eFactory installation ensures consistent packing density\u003c\/strong\u003e on every unit: not left to the installer to approximate in the field.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003eConstruction\u003c\/span\u003e\n      \u003ch4\u003eDado and V-Cut Joinery: No Butt Joints\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eEvery panel joint is machined with interlocking dado and V-cut geometry. The panels register mechanically before adhesive is applied, eliminating the gap variance that butt-jointed construction allows. \u003cstrong\u003eMechanical registration produces a tighter acoustic seal\u003c\/strong\u003e and a structurally stiffer assembly than surface-bonded panels.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003eConstruction\u003c\/span\u003e\n      \u003ch4\u003eInternal Bracing, Single-Layer Face, Rigidity by Structure\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe face panel is single-layer Langboard Elite MDF with internal bracing placed at span intervals to control panel flex under excursion load. Bracing transfers the mechanical energy of the drivers into the enclosure structure rather than allowing it to flex the baffle, keeping the acoustic seal intact at real power levels.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003eWiring\u003c\/span\u003e\n      \u003ch4\u003ePre-Wired 12g OFC: Ready to Connect\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eInternal wiring is 12-gauge oxygen-free copper, terminated at the Proline X terminal cup and pre-run to the woofer cutouts before shipping. \u003cstrong\u003ePull the leads, connect your drivers, done.\u003c\/strong\u003e No internal wiring work required at install. OFC construction eliminates the resistive loss and long-term oxidation that CCA wiring introduces.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003eMaterial\u003c\/span\u003e\n      \u003ch4\u003eLangboard Elite MDF, Published Mill Data, Not Marketing Language\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eLangboard Elite is a named, sourced, mill-documented panel product with published density, internal bond, and screw-holding specifications. \u003cstrong\u003e200 psi internal bond. 325 lb face screw holding.\u003c\/strong\u003e This is the same panel stock used across the full Proline X lineup, not a generic \"premium MDF\" designation with no verifiable spec behind it.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003eUniversal Fit\u003c\/span\u003e\n      \u003ch4\u003eUniversal Woofer Application: No Threaded Inserts\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe baffle is cut for universal 12\" mounting: \u003cstrong\u003e11.25\" cutout, 8\" max mounting depth\u003c\/strong\u003e. No threaded inserts means no proprietary bolt pattern to match. Mount any compliant 12\" driver with standard hardware. Pair with whatever woofer fits your power level and budget, Audiomobile, Crescendo, Image Dynamics, or your preferred brand.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"vs-card\"\u003e\n      \u003cspan class=\"vs-card-label\"\u003ePractical\u003c\/span\u003e\n      \u003ch4\u003eFeet Included: Proper Clearance Out of the Box\u003c\/h4\u003e\n      \u003cdiv class=\"vs-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eFeet are included and installed before shipment. They set the correct standoff distance between the enclosure and the Bronco's cargo floor. Enough clearance for the drivers to fire and pressurize the floor boundary without bottoming out. \u003cstrong\u003eNo improvised spacers, no field modifications required.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003chr class=\"vs-divider\"\u003e\n\n  \u003c!-- SECTION: Construction --\u003e\n  \u003cdiv class=\"vs-section\"\u003e\n    \u003ch3\u003eBuilt in Tennessee on ShopSabre CNC Routers\u003c\/h3\u003e\n    \u003cp\u003eEvery Proline X Vehicle Specific enclosure is CNC-cut and hand-assembled in Tullahoma, Tennessee. Panels are machined on ShopSabre CNC routers. Dado depth, V-cut geometry, cutout diameter, and external dimensions are held to spec on every unit. Internal volume is not approximated. It is calculated, programmed, and cut. The enclosure that ships to you performs to the same spec as the one used to develop the product.\u003c\/p\u003e\n    \u003cp\u003eFinished in plush black automotive carpet. Every unit is inspected before shipment.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION: Fitment --\u003e\n  \u003cdiv class=\"vs-section\"\u003e\n    \u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n    \u003cul class=\"vs-fitment-list\"\u003e\n      \u003cli\u003e2021 Ford Bronco: 2-Door\u003c\/li\u003e\n      \u003cli\u003e2021 Ford Bronco: 4-Door\u003c\/li\u003e\n      \u003cli\u003e2022 Ford Bronco: 2-Door\u003c\/li\u003e\n      \u003cli\u003e2022 Ford Bronco: 4-Door\u003c\/li\u003e\n      \u003cli\u003e2023 Ford Bronco: 2-Door\u003c\/li\u003e\n      \u003cli\u003e2023 Ford Bronco: 4-Door\u003c\/li\u003e\n      \u003cli\u003e2024 Ford Bronco: 2-Door\u003c\/li\u003e\n      \u003cli\u003e2024 Ford Bronco: 4-Door\u003c\/li\u003e\n      \u003cli\u003e2025 Ford Bronco: 2-Door\u003c\/li\u003e\n      \u003cli\u003e2025 Ford Bronco: 4-Door\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp style=\"margin-top: 14px; font-size: 0.9em; color: #64748b;\"\u003eAll trim levels. Enclosure sits in cargo area. No factory mounting point integration. Confirm available cargo dimensions before ordering.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WARRANTY --\u003e\n  \u003cdiv class=\"vs-warranty\"\u003e\n    \u003cdiv class=\"vs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003e\u003cstrong\u003eAll Proline X Vehicle Specific Series enclosures are covered by a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built and inspected in our Tennessee facility. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Version Bronco 1","offer_id":42385618174041,"sku":"VS FDB 12D-S DF-1","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Version Bronco 2","offer_id":42385618206809,"sku":"VS FDB 12D-S DF-2","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Version Bronco 3","offer_id":42385618239577,"sku":"VS FDB 12D-S DF-3","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Version 4 - I'll Provide My Artwork","offer_id":42385618272345,"sku":"VS FDB 12D-S DF-4","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-bronco-edition-dual-12-down-firing-sealed-subwoofer-boxsubwoofer-enclosuresproline-x-817201.jpg?v=1761970522"},{"product_id":"proline-x-performance-wedge-p12-ws-iii-sealed-enclosure-for-12-subwoofers","title":"Proline X Performance Wedge P12-WS III Sealed Enclosure for 12\" Subwoofers","description":"\u003cstyle\u003e\n  .ps-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .ps-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .ps-hero .ps-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .ps-hero .ps-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 20px 0; color: white; }\n  .ps-hero .ps-meta { font-size: 0.95em; color: #67e8f9; margin: 0; letter-spacing: 1px; }\n  .ps-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .ps-section-alt { background: #ecfeff; }\n  .ps-section h2 { color: #155e75; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .ps-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .ps-section p { font-size: 1.05em; margin: 0 0 18px 0; color: #334155; }\n  .ps-section strong { color: #0f172a; font-weight: 700; }\n  .ps-mdf-table { width: 100%; border-collapse: collapse; margin: 25px 0; background: #0f172a; color: #e2e8f0; border-radius: 8px; overflow: hidden; }\n  .ps-mdf-table td { padding: 14px 18px; border-bottom: 1px solid #1e293b; vertical-align: top; }\n  .ps-mdf-table tr:nth-child(even) { background: #0a1120; }\n  .ps-mdf-table tr:last-child td { border-bottom: none; }\n  .ps-mdf-table td:first-child { color: #06b6d4; font-weight: 700; white-space: nowrap; width: 25%; }\n  .ps-mdf-table td:nth-child(2) { color: white; font-weight: 700; width: 20%; }\n  .ps-mdf-table td:nth-child(3) { color: #cbd5e1; font-size: 0.95em; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ps-wrap\"\u003e\n\n\u003cdiv class=\"ps-hero\"\u003e\n  \u003ch2 class=\"ps-title\"\u003eProline X P12-WS III\u003c\/h2\u003e\n  \u003cp class=\"ps-subtitle\"\u003eSingle 12\" Wedge Sealed Enclosure | V3\u003c\/p\u003e\n  \u003cp class=\"ps-meta\"\u003e1.0 ft³ Net  |  Sealed Alignment  |  Wedge Profile  |  8.5\" Max Depth  |  Langboard Elite MDF  |  Built in Tennessee\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ps-section\"\u003e\n  \u003ch2\u003eOne 12\" Driver. Wedge Geometry. Reclaims Trunk Space Without Compromise.\u003c\/h2\u003e\n  \u003cp\u003eThe \u003cstrong\u003eProline X P12-WS III\u003c\/strong\u003e is the third-generation single 12\" sealed wedge enclosure, built for installs where rear seat clearance and trunk cargo space matter as much as bass output. At \u003cstrong\u003e1.0 ft³ net sealed\u003c\/strong\u003e with a tapered profile that hugs the rear seat contour, this enclosure delivers the correct internal airspace for a 12\" driver in a footprint that reclaims inches of upper trunk space compared to a rectangular alternative.\u003c\/p\u003e\n  \u003cp\u003eThe wedge tapers from \u003cstrong\u003e13.75\" deep at the bottom to 8.5\" deep at the top\u003c\/strong\u003e, matching the natural recline angle of most modern rear seats. Position the shallow edge against the seatback and the deep edge on the trunk floor, the enclosure nestles flush against the seat naturally, eliminating the wasted triangular void that forms behind a rectangular enclosure. The \u003cstrong\u003e16\" width\u003c\/strong\u003e keeps side-to-side clearance manageable in compact and midsize trunks. The \u003cstrong\u003e1.0 ft³ internal volume\u003c\/strong\u003e lands in the correct sealed range for the vast majority of 12\" drivers on the market.\u003c\/p\u003e\n  \u003cp\u003eEvery panel is CNC-cut from \u003cstrong\u003eLangboard Elite MDF\u003c\/strong\u003e to exact internal volume and assembled by hand in our Tennessee facility. Available in \u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e at $169.99 or \u003cstrong\u003ePlush Black\u003c\/strong\u003e at $179.99. Shipping is included.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ps-section ps-section-alt\"\u003e\n  \u003ch2\u003eWhy Wedge Geometry\u003c\/h2\u003e\n\n  \u003ch3\u003eThe Problem With Rectangular Enclosures\u003c\/h3\u003e\n  \u003cp\u003eModern sedan and coupe rear seats recline at 20 to 30 degrees from vertical. When a rectangular enclosure is placed against that angled surface, the bottom edge sits flush against the seat while the top edge extends straight up into the trunk, leaving a triangular air gap behind the enclosure that serves no acoustic purpose. That wasted space typically measures 2 to 4 inches at the top edge. Space you could be using for cargo or simply not consuming visually.\u003c\/p\u003e\n\n  \u003ch3\u003eThe Solution\u003c\/h3\u003e\n  \u003cp\u003eThe P12-WS III's back panel angles at approximately 20 degrees, closely matching typical rear seat recline. Position the shallow edge (8.5\") against the seatback and the deep edge (13.75\") on the trunk floor, the enclosure fills the available space correctly with no wasted void behind it. The full \u003cstrong\u003e1.0 ft³ internal airspace\u003c\/strong\u003e is preserved through optimized width and height dimensions. No acoustic compromise versus a rectangular 12\" sealed enclosure of equivalent volume. Space savings only.\u003c\/p\u003e\n\n  \u003ch3\u003eWhere The Wedge Pays Off\u003c\/h3\u003e\n  \u003cp\u003eCompact sedans where every inch of trunk depth matters. Coupes and sports cars with aggressive seat recline angles. Midsize sedans where the driver wants serious bass without giving up cargo flexibility. Any install where the trunk gets used for groceries, luggage, or work gear and the enclosure has to share the space.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ps-section\"\u003e\n  \u003ch2\u003eConstruction: Langboard Elite MDF, V-Groove And Dado Joinery\u003c\/h2\u003e\n\n  \u003ch3\u003eLangboard Elite MDF, Named And Mill-Documented\u003c\/h3\u003e\n  \u003cp\u003eEvery panel is cut from \u003cstrong\u003eLangboard Elite MDF, 3\/4\" (18mm)\u003c\/strong\u003e, a named, mill-documented panel stock produced in the United States. The specifications below are pulled directly from Langboard's published mill data.\u003c\/p\u003e\n\n  \u003ctable class=\"ps-mdf-table\"\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDensity\u003c\/td\u003e\n      \u003ctd\u003e48.5 lbs\/ft³\u003c\/td\u003e\n      \u003ctd\u003eHigher density means less porosity, better screw retention, reduced resonance\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInternal Bond\u003c\/td\u003e\n      \u003ctd\u003e200 psi\u003c\/td\u003e\n      \u003ctd\u003eResistance to delamination under sustained bass pressure\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eModulus of Elasticity\u003c\/td\u003e\n      \u003ctd\u003e410,000 psi\u003c\/td\u003e\n      \u003ctd\u003ePanel stiffness under load; less flex means less resonance\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFace Screw Holding\u003c\/td\u003e\n      \u003ctd\u003e325 lbs\u003c\/td\u003e\n      \u003ctd\u003eBaffle hardware stays locked under vibration\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEdge Screw Holding\u003c\/td\u003e\n      \u003ctd\u003e250 lbs\u003c\/td\u003e\n      \u003ctd\u003eJoint integrity at every panel edge connection\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV-Groove And Dado Joinery\u003c\/h3\u003e\n  \u003cp\u003eEvery panel joint uses \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. The angled back panel on a wedge enclosure presents joint geometry that simple butt joints cannot handle reliably over time. V-groove and dado joinery provides the mechanical interlocking and increased glue surface area that keeps angled joints airtight under bass pressure cycling.\u003c\/p\u003e\n\n  \u003ch3\u003eProline X Terminal Cup\u003c\/h3\u003e\n  \u003cp\u003eBuilt in-house at our Tennessee facility. \u003cstrong\u003eProline X ABS\/carbon fiber terminal cup with stainless hardware and copper ring terminals\u003c\/strong\u003e, pre-wired 12g OFC speaker wire. Recessed mount keeps the cup protected from cargo contact.\u003c\/p\u003e\n\n  \u003ch3\u003eHand-Assembled In Tennessee\u003c\/h3\u003e\n  \u003cp\u003eEvery enclosure is CNC-cut on ShopSabre industrial routers and hand-assembled at our facility in Tullahoma, Tennessee. Inspected before it ships. No overseas manufacturing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ps-section ps-section-alt\"\u003e\n  \u003ch2\u003eFitment Guide\u003c\/h2\u003e\n\n  \u003ch3\u003eDimensional Specifications\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 16\" W x 14.5\" H x 8.5\" D (top) \/ 13.75\" D (bottom)\u003cbr\u003e\n  \u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 1.0 ft³\u003cbr\u003e\n  \u003cstrong\u003eAlignment:\u003c\/strong\u003e Sealed\u003cbr\u003e\n  \u003cstrong\u003eSubwoofer Cutout:\u003c\/strong\u003e 11.13\"\u003cbr\u003e\n  \u003cstrong\u003eMax Mounting Depth:\u003c\/strong\u003e 8.5\"\u003cbr\u003e\n  \u003cstrong\u003eFront Panel Thickness:\u003c\/strong\u003e 0.75\" Single Baffle\u003c\/p\u003e\n\n  \u003ch3\u003eDriver Compatibility\u003c\/h3\u003e\n  \u003cp\u003eThe P12-WS III accommodates any 12\" subwoofer with a cutout diameter at or below \u003cstrong\u003e11.13\"\u003c\/strong\u003e and a mounting depth at or below \u003cstrong\u003e8.5\"\u003c\/strong\u003e. Optimal sealed volume range for the vast majority of 12\" drivers falls between 0.75 ft³ and 1.5 ft³, the P12-WS III's 1.0 ft³ sits in the middle of that range for broad compatibility. Verify published driver specs before ordering.\u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Orientation\u003c\/h3\u003e\n  \u003cp\u003ePosition the \u003cstrong\u003eshallow edge (8.5\") against the rear seat\u003c\/strong\u003e, with the \u003cstrong\u003edeep edge (13.75\") on the trunk floor\u003c\/strong\u003e. This is the orientation that produces the space-saving benefit, the taper follows the angle of the rear seatback, eliminating the triangular void that forms behind a rectangular enclosure. Installing with the deep edge against the seat defeats the purpose of the wedge geometry entirely. Verify orientation before final installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ps-section\"\u003e\n  \u003ch2\u003eSingle 12\" Sealed. Wedge Geometry. Tennessee-Built.\u003c\/h2\u003e\n  \u003cp\u003eThe Proline X P12-WS III delivers a single 12\" sealed alignment in a footprint that works with your vehicle's rear seat geometry instead of against it. \u003cstrong\u003eLangboard Elite MDF. V-groove and dado joinery. Proline X ABS\/carbon fiber terminal cup\u003c\/strong\u003e with stainless hardware and copper ring terminals. Hand-assembled in Tennessee and inspected before it ships.\u003c\/p\u003e\n  \u003cp\u003eOne driver. Sealed accuracy. Wedge profile. Compact trunk footprint. Shipping included.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dark Grey Trunk Liner","offer_id":42798431567961,"sku":"P12-S W G","price":169.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black Carpet","offer_id":42798431600729,"sku":"P12-S W B","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-performance-wedge-p12-ws-iii-sealed-enclosure-for-12-subwooferssubwoofer-enclosuresproline-x-6584912.jpg?v=1762008897"},{"product_id":"proline-x-micro-series-sealed-dual-12-enclosure-wavtech-thinpro-12-enclosure-only","title":"Proline-X Micro Series Sealed Dual 12\" Enclosure | Wavtech thinPRO12","description":"\u003c!-- ============================================================\n     PROLINE X MICRO SERIES — M12D-S WAV\n     DUAL WAVTECH thinPRO 12 | SEALED | ENCLOSURE ONLY\n     Color system: Green (#16a34a primary)\n     SKU: M12D-S WAV No Acrylic\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .ms-wrap * { box-sizing: border-box; }\n  .ms-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; margin: 0 auto; }\n\n  .ms-hero {\n    background: linear-gradient(135deg, #0f172a 0%, #14532d 100%);\n    border-radius: 8px;\n    padding: 40px 36px;\n    margin-bottom: 32px;\n    position: relative;\n    overflow: hidden;\n  }\n  .ms-hero::before {\n    content: '';\n    position: absolute;\n    top: -40px; right: -40px;\n    width: 220px; height: 220px;\n    background: rgba(22,163,74,0.12);\n    border-radius: 50%;\n  }\n  .ms-hero-badge {\n    display: inline-block;\n    background: transparent;\n    border: 2px solid #16a34a;\n    color: #86efac;\n    font-size: 0.75em;\n    font-weight: 700;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    padding: 4px 14px;\n    border-radius: 20px;\n    margin-bottom: 16px;\n  }\n  .ms-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n  .ms-hero p { color: #cbd5e1; font-size: 1em; 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margin: 0 0 10px 0; font-size: 1.1em; font-weight: 700; }\n  .ms-highlight h3 + h3 { margin-top: 18px; }\n  .ms-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n  .ms-highlight p:last-child { margin-bottom: 0; }\n\n  .ms-alert {\n    background: #dcfce7;\n    border: 1px solid #16a34a;\n    border-radius: 6px;\n    padding: 14px 18px;\n    margin: 20px 0;\n    font-size: 0.93em;\n    color: #166534;\n  }\n  .ms-alert strong { color: #14532d; }\n\n  .ms-wiring {\n    background: #0f172a;\n    border-radius: 6px;\n    padding: 24px 28px;\n    margin: 24px 0;\n  }\n  .ms-wiring h3 { color: #86efac; font-size: 1em; font-weight: 700; margin: 0 0 16px 0; letter-spacing: 0.05em; text-transform: uppercase; }\n  .ms-wiring-row {\n    display: flex;\n    align-items: center;\n    gap: 14px;\n    padding: 10px 0;\n    border-bottom: 1px solid #1e293b;\n  }\n  .ms-wiring-row:last-child { border-bottom: none; padding-bottom: 0; }\n  .ms-wiring-load {\n    background: #16a34a;\n    color: #ffffff;\n    font-size: 1.1em;\n    font-weight: 800;\n    padding: 8px 16px;\n    border-radius: 4px;\n    min-width: 60px;\n    text-align: center;\n  }\n  .ms-wiring-desc { color: #cbd5e1; font-size: 0.93em; line-height: 1.5; }\n  .ms-wiring-desc strong { color: #ffffff; }\n\n  .ms-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 24px 0; }\n  @media (max-width: 600px) { .ms-card-grid { grid-template-columns: 1fr; } }\n  .ms-card {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 3px solid #16a34a;\n    border-radius: 6px;\n    padding: 22px;\n  }\n  .ms-card-label {\n    display: inline-block;\n    background: #16a34a;\n    color: #ffffff;\n    font-size: 0.68em;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    padding: 3px 10px;\n    border-radius: 3px;\n    margin-bottom: 10px;\n  }\n  .ms-card h4 { color: #14532d; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ms-card-divider { height: 2px; background: #16a34a; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ms-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ms-card p strong { color: #14532d; }\n\n  .ms-warranty {\n    background: #0f172a;\n    border-left: 5px solid #16a34a;\n    border-radius: 0 6px 6px 0;\n    padding: 20px 28px;\n    margin: 28px 0;\n    display: flex;\n    align-items: center;\n    gap: 20px;\n  }\n  .ms-warranty-badge { background: #16a34a; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ms-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ms-warranty strong { color: #ffffff; }\n\n  .ms-fitment { list-style: none; margin: 14px 0 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }\n  @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n  .ms-fitment li { font-size: 0.93em; color: #334155; padding: 8px 12px; background: #f0fdf4; border-left: 3px solid #16a34a; border-radius: 0 4px 4px 0; }\n\n  .ms-divider { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }\n  .ms-langboard { font-weight: 700; color: #14532d; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ms-wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv class=\"ms-hero\"\u003e\n    \u003cspan class=\"ms-hero-badge\"\u003eMicro Series | M12D-S WAV | Enclosure Only\u003c\/span\u003e\n    \u003ch2\u003eDual 12\". 8\" Deep.\u003cbr\u003e0.60 cu ft Per Chamber.\u003c\/h2\u003e\n    \u003cp\u003eTwo Wavtech thinPRO 12 drivers. Two isolated sealed chambers. Each chamber holds exactly 0.60 cubic feet. Wavtech's published optimal sealed volume for this driver. The M12D-S WAV delivers dual 12\" output in 8 inches of total depth. A conventional dual 12\" sealed box at this volume runs 14–18 inches deep. This one fits behind the seat of a full-size truck.\u003c\/p\u003e\n    \u003cdiv class=\"ms-hero-stats\"\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e1.20\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCu Ft Net Total\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e0.60\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCu Ft Per Chamber\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e8\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eTotal Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e1,500W\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCombined RMS Rating\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ENCLOSURE ONLY NOTICE --\u003e\n  \u003cdiv class=\"ms-alert\"\u003e\n    \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e Wavtech thinPRO 12 subwoofers are not included and must be purchased separately. This enclosure accepts both the thinPRO12-2 (Single 2Ω) and thinPRO12-4 (Single 4Ω). Select the variant that matches your amplifier's stable impedance before ordering. Final load depends on which variant you choose and how they are wired.\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 1: Volume --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e0.60 cu ft Per Chamber, Calculated Per Driver, Not Split From a Single Box\u003c\/h3\u003e\n    \u003cp\u003eRunning two thinPRO 12 drivers in a shared enclosure is not the same as doubling a single-driver box. Each driver needs its own isolated airspace to load correctly. The M12D-S WAV uses a dual-chamber construction, each driver occupies a fully sealed, acoustically isolated 0.60 cubic foot chamber. That is Wavtech's published optimal sealed volume for the thinPRO 12. Neither driver is sharing airspace with the other, and neither chamber is being compromised to hit a total volume number.\u003c\/p\u003e\n    \u003cp\u003eThe 1.20 cubic feet total net volume is calculated after driver displacement, double-layer baffle material, and internal chamber divider are subtracted. What each driver sees is 0.60 cubic feet of net sealed airspace, the same volume a single M12-S WAV delivers, replicated twice inside one enclosure footprint.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 2: Construction --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e1.5\" Double-Layer Baffle: V-Groove and Dado Joinery Throughout\u003c\/h3\u003e\n    \u003cp\u003eThe front baffle is a double-layer stack-fab build, two CNC-cut Langboard Elite panels bonded to 1.5 inches total. Two thinPRO 12 drivers at 750 watts RMS each generate 1,500 watts of combined excursion load at the baffle simultaneously. A single 3\/4\" panel at this output level resonates. Two bonded layers do not.\u003c\/p\u003e\n    \u003cp\u003eThe rest of the enclosure uses both V-groove and dado joinery, V-groove at the exterior panel edges for a tight, finished corner, dado slots at every interior panel intersection for a mechanical interlock before adhesive is applied. Neither joint relies on adhesive condition alone. The chamber divider wall uses the same joinery standard as the exterior panels, fully interlocked, adhesive-sealed, and CNC-cut to maintain the acoustic isolation between chambers.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- IMPEDANCE WIRING BLOCK --\u003e\n  \u003cdiv class=\"ms-wiring\"\u003e\n    \u003ch3\u003eImpedance Wiring: Know Before You Order\u003c\/h3\u003e\n    \u003cdiv class=\"ms-wiring-row\"\u003e\n      \u003cdiv class=\"ms-wiring-load\"\u003e1Ω\u003c\/div\u003e\n      \u003cdiv class=\"ms-wiring-desc\"\u003e\n\u003cstrong\u003eTwo thinPRO12-2 (Single 2Ω) wired in parallel.\u003c\/strong\u003e Maximum power extraction from 1Ω-stable monoblocks. Verify your amplifier is explicitly rated for sustained 1Ω operation before selecting this configuration.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ms-wiring-row\"\u003e\n      \u003cdiv class=\"ms-wiring-load\"\u003e2Ω\u003c\/div\u003e\n      \u003cdiv class=\"ms-wiring-desc\"\u003e\n\u003cstrong\u003eTwo thinPRO12-4 (Single 4Ω) wired in parallel.\u003c\/strong\u003e Broadest amplifier compatibility. Most quality Class D monoblocks are stable and efficient at 2Ω. This is the recommended configuration for most builds.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ms-wiring-row\"\u003e\n      \u003cdiv class=\"ms-wiring-load\"\u003e4Ω\u003c\/div\u003e\n      \u003cdiv class=\"ms-wiring-desc\"\u003e\n\u003cstrong\u003eTwo thinPRO12-2 (Single 2Ω) wired in series.\u003c\/strong\u003e Safest electrical configuration. Requires a monoblock with strong 4Ω output ratings to deliver the power ceiling these drivers need.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHY CARDS --\u003e\n  \u003cdiv class=\"ms-card-grid\"\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eVolume\u003c\/span\u003e\n      \u003ch4\u003eDual Chamber: 0.60 cu ft Each, Acoustically Isolated\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eEach driver occupies its own fully sealed chamber at \u003cstrong\u003e0.60 cubic feet net\u003c\/strong\u003e: Wavtech's optimal sealed volume for the thinPRO 12. The chamber divider is CNC-cut and dado-jointed. Neither driver shares airspace with the other.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eBaffle\u003c\/span\u003e\n      \u003ch4\u003e1.5\" Double-Layer Stack Fab, 1,500W Combined Load\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eTwo bonded layers of \u003cstrong\u003eLangboard Elite 3\/4\" MDF\u003c\/strong\u003e at 1.5 inches total. At 1,500 watts RMS combined, the baffle is the highest-stress panel in this build. Double-layer construction eliminates the resonance a single panel would introduce at this output level.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eJoinery\u003c\/span\u003e\n      \u003ch4\u003eV-Groove + Dado: Two Mechanical Systems\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003e\u003cstrong\u003eV-groove joinery\u003c\/strong\u003e at exterior panel edges creates tight, finished corners. \u003cstrong\u003eDado joinery\u003c\/strong\u003e at interior panel intersections provides a mechanical interlock at every critical joint. Both systems are adhesive-sealed. No joint relies on glue alone.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eTerminal\u003c\/span\u003e\n      \u003ch4\u003eProline X Terminal Cup: One Per Chamber\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eEach chamber has its own dedicated \u003cstrong\u003eProline X ABS\/carbon fiber terminal cup\u003c\/strong\u003e with stainless steel hardware and copper ring terminals. Pre-wired with 12-gauge OFC internally. No shared terminal between drivers. Each driver connects independently to its own cup.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eMounting\u003c\/span\u003e\n      \u003ch4\u003e8\/32 Threaded Inserts: Machine Screws Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eBoth baffle positions are fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e. Stainless 8\/32 machine screws are included for both drivers. Each thinPRO 12 threads into steel, not MDF. Consistent clamping torque, no stripping, and both drivers reinstall cleanly after any service.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eDepth\u003c\/span\u003e\n      \u003ch4\u003e8\" Total: Dual 12\" Where a Standard Box Cannot Go\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eA conventional dual 12\" sealed enclosure at 1.20 cubic feet runs \u003cstrong\u003e14–18 inches deep\u003c\/strong\u003e. The M12D-S WAV runs 8. The thinPRO 12's 3-inch mounting depth is the only reason this geometry is possible, and this enclosure is the only dual 12\" build that uses it correctly.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eConfiguration\u003c\/span\u003e\n      \u003ch4\u003eFront-Firing or Downfiring: Feet Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe M12D-S WAV ships with \u003cstrong\u003efeet for downfiring installation\u003c\/strong\u003e. Run it front-firing in a standard trunk or cargo floor orientation, or flip it to downfire to couple bass output with the vehicle floor. No additional hardware required for either configuration.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003ePolyfill Pre-Installed: Per Chamber\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003ePolyfill is packed and installed in \u003cstrong\u003eeach chamber independently\u003c\/strong\u003e at the factory. Consistent density per chamber, confirmed before the enclosure ships. Factory installation removes the variable of installer-estimated packing. Both chambers are acoustically matched at the polyfill stage.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- HIGHLIGHT --\u003e\n  \u003cdiv class=\"ms-highlight\"\u003e\n    \u003ch3\u003eReady to Mount. Ready to Wire.\u003c\/h3\u003e\n    \u003cp\u003eBoth baffles ship with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e and stainless machine screws included, both thinPRO 12 drivers mount to steel, not MDF. Each chamber has its own \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e pre-wired with 12-gauge OFC. Connect your amplifier runs to the two terminal cups, mount both drivers, and installation is complete. No internal wiring work, no hardware to source separately.\u003c\/p\u003e\n    \u003ch3\u003eOptional Acrylic Front Panel\u003c\/h3\u003e\n    \u003cp\u003eThe M12D-S WAV is available with an optional \u003cstrong\u003egloss black acrylic front panel\u003c\/strong\u003e. Option B adds the Wavtech logo in white. Option C adds your custom artwork. Submit your file after purchase and we will confirm before production. Option A ships without acrylic. Plush black carpet face only. Select at checkout.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FITMENT --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n    \u003cp\u003eAt 29\" × 15\" × 8\", measure your available space before ordering. The 29\" width and 15\" depth are the dimensions most likely to be constraints depending on your vehicle. The 8\" height is what makes this viable in applications where no conventional dual 12\" build would fit:\u003c\/p\u003e\n    \u003cul class=\"ms-fitment\"\u003e\n      \u003cli\u003eBehind-seat: full-size crew cab and extended cab trucks\u003c\/li\u003e\n      \u003cli\u003eTrunk floor: full-size sedans and wagons\u003c\/li\u003e\n      \u003cli\u003eFlat cargo floor: crossovers and mid-size SUVs\u003c\/li\u003e\n      \u003cli\u003eUnder rear bench: SUVs and full-size vans\u003c\/li\u003e\n      \u003cli\u003eStealth cargo builds: hatchbacks and sports wagons\u003c\/li\u003e\n      \u003cli\u003eHigh-output daily builds where depth is the primary constraint\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WARRANTY --\u003e\n  \u003cdiv class=\"ms-warranty\"\u003e\n    \u003cdiv class=\"ms-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003e\u003cstrong\u003eAll Proline X Micro Series enclosures carry a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built and inspected in our Tullahoma, Tennessee facility before shipment. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003chr class=\"ms-divider\"\u003e\n\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eMade in Tennessee\u003c\/h3\u003e\n    \u003cp\u003eThe M12D-S WAV is CNC-cut and hand-assembled in Tullahoma, Tennessee on ShopSabre CNC routers. Every panel dimension, chamber volume, dado joint depth, baffle layer count, and terminal placement is held to spec on every unit. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e throughout: named, mill-documented, published density and internal bond specifications. Not a generic \"premium MDF\" claim.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\n\u003c!-- ============================================================\n     SPECS TABLE — drop into Specifications metafield\n     ============================================================ --\u003e\n\n\u003c!--\n\u003ctable width=\"100%\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eM12D-S WAV\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eCompatible Driver\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eWavtech thinPRO12-2 \/ thinPRO12-4\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eDual 12\" — Dual Chamber Sealed\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eInternal Volume (Net)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e1.20 Cubic Feet Total (0.60 cu ft per chamber)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eLangboard Elite 3\/4\" MDF\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eCNC-Cut Stack Fab \/ V-Groove + Dado Joinery\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFront Panel Thickness\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e1.5 Inches (Double-Layer Stack Fab)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eExternal Width\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e29 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eExternal Height\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e8 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eExternal Depth\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e15 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eMax Mounting Depth\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e6.0 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eWoofer Opening\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eDirect Fit — Wavtech thinPRO 12 (Standard 12\" Cutout)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eDriver Mounting\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e8\/32 Threaded Inserts — Stainless Machine Screws Included\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eTerminal Cup\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eProline X ABS\/Carbon Fiber — One Per Chamber, Pre-Wired\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eInternal Wiring\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e12-Gauge OFC (Oxygen-Free Copper)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eImpedance Options\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e1Ω (two S2Ω parallel) \/ 2Ω (two S4Ω parallel) \/ 4Ω (two S2Ω series)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFiring Direction\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eFront-Firing or Downfiring\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eDownfire Feet\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eIncluded\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003ePolyfill\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003ePre-Installed Per Chamber\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003ePlush Black Automotive Carpet\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eOptional Acrylic Panel\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eGloss Black — Wavtech Logo (B) or Custom (C)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e80 lbs\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e2 Years — Proline X \/ Audio Intensity\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eMade In\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eTullahoma, Tennessee, USA\u003c\/td\u003e\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n--\u003e\n\n\n\u003c!-- ============================================================\n     CHEAT SHEET — drop into Quick Specs metafield\n     ============================================================ --\u003e\n\n\u003c!--\n\u003cul class=\"cheat-sheet-list\"\u003e\n  \u003cli\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e High-output stealth builds — full-size trucks, trunk floor installs, depth-constrained dual 12\" applications\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003ePower:\u003c\/strong\u003e 1,500W RMS combined (750W RMS per Wavtech thinPRO 12)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eTopology\/Class:\u003c\/strong\u003e Sealed \/ Dual Chamber \/ Double-Layer Stack Fab \/ Front-Fire or Downfire\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSonic Character:\u003c\/strong\u003e Deep, controlled, musical dual 12\" output — 0.60 cu ft per chamber hits Wavtech's optimal sealed target exactly\u003c\/li\u003e\n\u003c\/ul\u003e\n--\u003e","brand":"Proline X","offers":[{"title":"No Thanks","offer_id":43162222100569,"sku":"M12D-S WAV NA","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Yes- Brand or Automotive Logo","offer_id":43162278953049,"sku":"M12D-S WAV LOGO","price":339.99,"currency_code":"USD","in_stock":true},{"title":"Custom - Contact me for details","offer_id":43162222133337,"sku":"M12D-S WAV CUST","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/loaded-dual-wavtech-thinpro12-subwoofers-proline-x-micro-series-sealed-enclosureenclosed-subwooferaudio-intensity-504909.jpg?v=1761970494"},{"product_id":"proline-x-micro-series-12-sealed-enclosure-fits-wavtech-thinpro-12","title":"Proline X Micro Series 12\" Sealed Enclosure - Fits Wavtech thinPRO12","description":"\u003c!-- ============================================================\n     PROLINE X MICRO SERIES — M12-S WAV\n     WAVTECH thinPRO 12 | SEALED ENCLOSURE ONLY\n     Color system: Green (#16a34a primary)\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .ms-wrap * { box-sizing: border-box; }\n  .ms-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; margin: 0 auto; }\n\n  .ms-hero {\n    background: linear-gradient(135deg, #0f172a 0%, #14532d 100%);\n    border-radius: 8px;\n    padding: 40px 36px;\n    margin-bottom: 32px;\n    position: relative;\n    overflow: hidden;\n  }\n  .ms-hero::before {\n    content: '';\n    position: absolute;\n    top: -40px; right: -40px;\n    width: 220px; height: 220px;\n    background: rgba(22,163,74,0.12);\n    border-radius: 50%;\n  }\n  .ms-hero-badge {\n    display: inline-block;\n    background: transparent;\n    border: 2px solid #16a34a;\n    color: #86efac;\n    font-size: 0.75em;\n    font-weight: 700;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    padding: 4px 14px;\n    border-radius: 20px;\n    margin-bottom: 16px;\n  }\n  .ms-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n  .ms-hero p { color: #cbd5e1; font-size: 1em; margin: 0 0 24px 0; max-width: 640px; line-height: 1.7; }\n  .ms-hero-stats { display: flex; gap: 28px; flex-wrap: wrap; }\n  .ms-stat { text-align: center; }\n  .ms-stat-num { display: block; color: #86efac; font-size: 1.5em; font-weight: 800; line-height: 1; }\n  .ms-stat-label { display: block; color: #94a3b8; font-size: 0.72em; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 4px; }\n\n  .ms-section {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 4px solid #16a34a;\n    border-radius: 6px;\n    padding: 28px 32px;\n    margin-bottom: 24px;\n  }\n  .ms-section:nth-child(odd) { background: #f8fafc; }\n  .ms-section h3 { color: #14532d; font-size: 1.15em; font-weight: 700; margin: 0 0 14px 0; }\n  .ms-section p { color: #334155; font-size: 0.97em; margin: 0 0 12px 0; }\n  .ms-section p:last-child { margin-bottom: 0; }\n\n  .ms-highlight {\n    background: #f0fdf4;\n    border-left: 5px solid #16a34a;\n    padding: 22px 28px;\n    margin: 28px 0;\n    border-radius: 0 6px 6px 0;\n  }\n  .ms-highlight h3 { color: #14532d; margin: 0 0 10px 0; font-size: 1.1em; font-weight: 700; }\n  .ms-highlight h3 + h3 { margin-top: 18px; }\n  .ms-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n  .ms-highlight p:last-child { margin-bottom: 0; }\n\n  .ms-alert {\n    background: #dcfce7;\n    border: 1px solid #16a34a;\n    border-radius: 6px;\n    padding: 14px 18px;\n    margin: 20px 0;\n    font-size: 0.93em;\n    color: #166534;\n  }\n  .ms-alert strong { color: #14532d; }\n\n  .ms-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 24px 0; }\n  @media (max-width: 600px) { .ms-card-grid { grid-template-columns: 1fr; } }\n  .ms-card {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 3px solid #16a34a;\n    border-radius: 6px;\n    padding: 22px;\n  }\n  .ms-card-label {\n    display: inline-block;\n    background: #16a34a;\n    color: #ffffff;\n    font-size: 0.68em;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    padding: 3px 10px;\n    border-radius: 3px;\n    margin-bottom: 10px;\n  }\n  .ms-card h4 { color: #14532d; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ms-card-divider { height: 2px; background: #16a34a; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ms-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ms-card p strong { color: #14532d; }\n\n  .ms-warranty {\n    background: #0f172a;\n    border-left: 5px solid #16a34a;\n    border-radius: 0 6px 6px 0;\n    padding: 20px 28px;\n    margin: 28px 0;\n    display: flex;\n    align-items: center;\n    gap: 20px;\n  }\n  .ms-warranty-badge { background: #16a34a; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ms-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ms-warranty strong { color: #ffffff; }\n\n  .ms-fitment { list-style: none; margin: 14px 0 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }\n  @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n  .ms-fitment li { font-size: 0.93em; color: #334155; padding: 8px 12px; background: #f0fdf4; border-left: 3px solid #16a34a; border-radius: 0 4px 4px 0; }\n\n  .ms-divider { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }\n  .ms-langboard { font-weight: 700; color: #14532d; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ms-wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv class=\"ms-hero\"\u003e\n    \u003cspan class=\"ms-hero-badge\"\u003eMicro Series | M12-S WAV | Enclosure Only\u003c\/span\u003e\n    \u003ch2\u003eWavtech's Optimal 0.60 cu ft.\u003cbr\u003eIn 4.5 Inches of Depth.\u003c\/h2\u003e\n    \u003cp\u003eThe Wavtech thinPRO 12 has a published optimal sealed volume of 0.60 cubic feet. The Proline X M12-S WAV delivers exactly that, net, after displacement, in a double-layer stack-fab enclosure that is 4.5 inches deep. Use it front-firing or flip it to downfire with the included feet. Where a conventional 0.60 cubic foot sealed 12\" box runs 10-12 inches of depth, this one fits behind the seat of a crew cab truck.\u003c\/p\u003e\n    \u003cdiv class=\"ms-hero-stats\"\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e0.60\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCu Ft Net: Optimal\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e4.5\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eTotal Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e1.5\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eDouble-Layer Baffle\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e750W\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eDriver RMS Rating\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ENCLOSURE ONLY NOTICE --\u003e\n  \u003cdiv class=\"ms-alert\"\u003e\n    \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The Wavtech thinPRO 12 subwoofer is not included. This enclosure is designed for customers who already own or are separately purchasing the thinPRO12-2 or thinPRO12-4. Both impedance variants are physically identical and fit this enclosure.\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 1: Volume --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e0.60 Cubic Feet: The Number Wavtech Publishes as Optimal\u003c\/h3\u003e\n    \u003cp\u003eWavtech publishes a sealed volume range of 0.40–1.0 cubic feet for the thinPRO 12, with 0.60 cubic feet as the optimum. At that volume the system Qtc lands near 0.94 based on the thinPRO 12's published T\/S parameters. Slightly elevated above neutral, which in real-world vehicle cabin environments produces a useful low-frequency extension curve that works with cabin gain rather than against it.\u003c\/p\u003e\n    \u003cp\u003eThe M12-S WAV is built to hit 0.60 cubic feet net. Calculated after driver displacement and double-layer baffle material are subtracted from gross internal volume. Generic shallow-mount 12\" enclosures advertise gross volume and sell the same box for multiple driver models. This enclosure is built to one spec, for one driver, and the volume target is the one Wavtech specifies as optimal. The acoustic result you model for this driver in this box is the result you get.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 2: Baffle --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e1.5\" Double-Layer Baffle: Built for 750W RMS\u003c\/h3\u003e\n    \u003cp\u003eThe front baffle on the M12-S WAV is 1.5 inches thick, two CNC-cut Langboard Elite panels bonded in a stack-fab assembly. The baffle is the highest-stress structural member in any sealed enclosure. It carries the driver's mechanical mounting load and sustains the full acoustic pressure differential between the pressurized interior and the exterior on every bass transient. At 750 watts RMS, the thinPRO 12 loads that baffle hard.\u003c\/p\u003e\n    \u003cp\u003eA single 3\/4\" panel at this driver size and power class will resonate at frequencies within the driver's operating range, adding coloration to the output. Two bonded Langboard Elite layers at 1.5 inches effectively double the panel mass and eliminate the resonance problem at the structural level. The rest of the enclosure runs standard stack-fab construction throughout, dado-jointed, adhesive-sealed, and CNC-cut to tolerance on every panel.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHY CARDS --\u003e\n  \u003cdiv class=\"ms-card-grid\"\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eVolume\u003c\/span\u003e\n      \u003ch4\u003e0.60 cu ft Net: Wavtech's Published Optimum\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eWavtech specifies \u003cstrong\u003e0.60 cubic feet\u003c\/strong\u003e as the optimal sealed volume for the thinPRO 12. This enclosure delivers that number net. After driver displacement and double-layer baffle thickness are subtracted. Not approximated from external dimensions.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eBaffle\u003c\/span\u003e\n      \u003ch4\u003e1.5\" Double-Layer Stack Fab: No Baffle Resonance\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eTwo bonded layers of \u003cstrong\u003eLangboard Elite 3\/4\" MDF\u003c\/strong\u003e form a 1.5-inch baffle that does not flex or resonate at the power levels the thinPRO 12 is rated for. Panel resonance at the baffle adds coloration to bass output. This construction eliminates it at the source.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eMounting\u003c\/span\u003e\n      \u003ch4\u003e8\/32 Threaded Inserts: Machine Screws Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe double-layer baffle is fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e. Stainless 8\/32 machine screws are included. The thinPRO 12 threads into steel, not MDF. No stripping, no loosening under vibration, and the driver comes out and reinstalls cleanly every time.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eWiring\u003c\/span\u003e\n      \u003ch4\u003eProline X Terminal Cup: Pre-Wired from the Factory\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe Proline X \u003cstrong\u003eproprietary terminal cup\u003c\/strong\u003e is installed and pre-wired with \u003cstrong\u003e12-gauge OFC\u003c\/strong\u003e run internally to the driver location. Connect your amplifier run to the terminal cup, mount the driver to the threaded inserts. Installation is complete on both counts without touching internal wiring.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eDepth\u003c\/span\u003e\n      \u003ch4\u003e4.5\" Total: Where a Standard 12\" Box Cannot Go\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eA conventional 0.60 cubic foot sealed 12\" enclosure runs \u003cstrong\u003e10-12 inches deep\u003c\/strong\u003e. The M12-S WAV runs 4.5. That is the difference between fitting behind the seat of a crew cab truck and not fitting at all. The thinPRO 12's 3-inch mounting depth is what makes this geometry possible.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eConfiguration\u003c\/span\u003e\n      \u003ch4\u003eFront-Firing or Downfiring: Feet Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe M12-S WAV ships with \u003cstrong\u003erubber feet for downfiring installation\u003c\/strong\u003e. Use it front-firing in standard orientation or flip it downward to couple bass output with the vehicle floor. Downfiring is particularly effective in full-size truck cabs where floor coupling distributes low-frequency response more evenly throughout the cabin.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eStructure\u003c\/span\u003e\n      \u003ch4\u003eStack-Fab Dado Joinery Throughout\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eEvery panel joint beyond the baffle uses CNC-cut interlocking dado slots, mechanical interlock before adhesive, adhesive seal after. No joint relies on glue alone. At the panel level, \u003cstrong\u003eLangboard Elite MDF\u003c\/strong\u003e with a published 200 psi internal bond rating and 410,000 psi MOE holds structural integrity at sustained high-excursion input levels.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003ePolyfill Pre-Installed\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003ePolyfill is packed and installed at the factory. It acoustically increases effective internal volume, extending low-frequency output without adding external size. Factory installation ensures consistent packing density across every unit, not left to the installer to estimate.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eFitment\u003c\/span\u003e\n      \u003ch4\u003eStandard 12\" Cutout: Direct Fit thinPRO 12\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe thinPRO 12 uses a \u003cstrong\u003estandard 12\" round mounting flange\u003c\/strong\u003e (282mm \/ 11-1\/8\"). The M12-S WAV baffle is machined to that cutout diameter. The driver seats flush, seals against the gasket, and mounts to the threaded inserts without shimming or modification.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- HIGHLIGHT --\u003e\n  \u003cdiv class=\"ms-highlight\"\u003e\n    \u003ch3\u003eReady to Mount. Ready to Wire. Ready to Downfire.\u003c\/h3\u003e\n    \u003cp\u003eThe M12-S WAV ships fully prepped. The \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired to the driver location with 12-gauge OFC. Connect your amplifier run and the wiring side is done. The double-layer baffle uses \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws included, the thinPRO 12 mounts to steel, not MDF. \u003cstrong\u003eRubber feet are included\u003c\/strong\u003e for downfiring installation. No additional hardware required to run it either way. Pre-installed polyfill is already packed at the factory.\u003c\/p\u003e\n    \u003ch3\u003eImpedance Options: thinPRO12-2 and thinPRO12-4\u003c\/h3\u003e\n    \u003cp\u003eThe Wavtech thinPRO 12 is available as the \u003cstrong\u003ethinPRO12-2\u003c\/strong\u003e (single 2-ohm voice coil) and the \u003cstrong\u003ethinPRO12-4\u003c\/strong\u003e (single 4-ohm voice coil). Both variants are physically identical and fit this enclosure. Choose the impedance that matches your amplifier's stable load. Single voice coil, single connection, no wiring configuration required.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FITMENT --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n    \u003cp\u003eAt 26.5\" × 17\" × 4.5\", the M12-S WAV opens install locations that no conventional 0.60 cu ft 12\" sealed build can reach:\u003c\/p\u003e\n    \u003cul class=\"ms-fitment\"\u003e\n      \u003cli\u003eBehind-seat: full-size crew cab and extended cab trucks\u003c\/li\u003e\n      \u003cli\u003eUnder rear bench: SUVs and full-size vans\u003c\/li\u003e\n      \u003cli\u003eTrunk floor: full-size sedans and wagons\u003c\/li\u003e\n      \u003cli\u003eCargo floor: crossovers and mid-size SUVs\u003c\/li\u003e\n      \u003cli\u003eFlat cargo area: hatchbacks and sports cars\u003c\/li\u003e\n      \u003cli\u003eCustom under-bed installs: utility and work trucks\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WARRANTY --\u003e\n  \u003cdiv class=\"ms-warranty\"\u003e\n    \u003cdiv class=\"ms-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003e\u003cstrong\u003eAll Proline X Micro Series enclosures are covered by a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built in our Tennessee facility and inspected before shipment. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003chr class=\"ms-divider\"\u003e\n\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eMade in Tennessee\u003c\/h3\u003e\n    \u003cp\u003eEvery Proline X Micro Series enclosure is CNC-cut and hand-assembled in Tullahoma, Tennessee on ShopSabre CNC routers. Internal volume, dado joint depth, cutout diameter, baffle layer count, and terminal placement are held to spec on every unit. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e is used throughout, a named, mill-documented board with published density, internal bond, and screw-holding specifications. Not a generic \"premium MDF\" claim.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43169786986585,"sku":"M12-S WAV","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-12-sealed-enclosure-fits-wavtech-thinpro-12subwoofer-enclosuresproline-x-9018098.jpg?v=1774218428"},{"product_id":"proline-x-micro-series-12-sealed-enclosure-fits-jl-12tw3","title":"Proline X Micro Series 12\" Sealed Enclosure - Fits JL Audio 12TW3","description":"\u003c!-- ============================================================\n     PROLINE X MICRO SERIES — JL AUDIO 12TW3\n     SEALED 12\" ENCLOSURE ONLY\n     Color system: Green (#16a34a primary)\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .ms-wrap * { box-sizing: border-box; }\n  .ms-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; margin: 0 auto; }\n\n  .ms-hero {\n    background: linear-gradient(135deg, #0f172a 0%, #14532d 100%);\n    border-radius: 8px;\n    padding: 40px 36px;\n    margin-bottom: 32px;\n    position: relative;\n    overflow: hidden;\n  }\n  .ms-hero::before {\n    content: '';\n    position: absolute;\n    top: -40px; right: -40px;\n    width: 220px; height: 220px;\n    background: rgba(22,163,74,0.12);\n    border-radius: 50%;\n  }\n  .ms-hero-badge {\n    display: inline-block;\n    background: transparent;\n    border: 2px solid #16a34a;\n    color: #86efac;\n    font-size: 0.75em;\n    font-weight: 700;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    padding: 4px 14px;\n    border-radius: 20px;\n    margin-bottom: 16px;\n  }\n  .ms-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n  .ms-hero p { color: #cbd5e1; font-size: 1em; margin: 0 0 24px 0; max-width: 640px; line-height: 1.7; }\n  .ms-hero-stats { display: flex; gap: 28px; flex-wrap: wrap; }\n  .ms-stat { text-align: center; }\n  .ms-stat-num { display: block; color: #86efac; font-size: 1.5em; font-weight: 800; line-height: 1; }\n  .ms-stat-label { display: block; color: #94a3b8; font-size: 0.72em; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 4px; }\n\n  .ms-section {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 4px solid #16a34a;\n    border-radius: 6px;\n    padding: 28px 32px;\n    margin-bottom: 24px;\n  }\n  .ms-section:nth-child(odd) { background: #f8fafc; }\n  .ms-section h3 { color: #14532d; font-size: 1.15em; font-weight: 700; margin: 0 0 14px 0; }\n  .ms-section p { color: #334155; font-size: 0.97em; margin: 0 0 12px 0; }\n  .ms-section p:last-child { margin-bottom: 0; }\n\n  .ms-highlight {\n    background: #f0fdf4;\n    border-left: 5px solid #16a34a;\n    padding: 22px 28px;\n    margin: 28px 0;\n    border-radius: 0 6px 6px 0;\n  }\n  .ms-highlight h3 { color: #14532d; margin: 0 0 10px 0; font-size: 1.1em; font-weight: 700; }\n  .ms-highlight h3 + h3 { margin-top: 18px; }\n  .ms-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n  .ms-highlight p:last-child { margin-bottom: 0; }\n\n  .ms-alert {\n    background: #dcfce7;\n    border: 1px solid #16a34a;\n    border-radius: 6px;\n    padding: 14px 18px;\n    margin: 20px 0;\n    font-size: 0.93em;\n    color: #166534;\n  }\n  .ms-alert strong { color: #14532d; }\n\n  .ms-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 24px 0; }\n  @media (max-width: 600px) { .ms-card-grid { grid-template-columns: 1fr; } }\n  .ms-card {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 3px solid #16a34a;\n    border-radius: 6px;\n    padding: 22px;\n  }\n  .ms-card-label {\n    display: inline-block;\n    background: #16a34a;\n    color: #ffffff;\n    font-size: 0.68em;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    padding: 3px 10px;\n    border-radius: 3px;\n    margin-bottom: 10px;\n  }\n  .ms-card h4 { color: #14532d; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ms-card-divider { height: 2px; background: #16a34a; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ms-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ms-card p strong { color: #14532d; }\n\n  .ms-warranty {\n    background: #0f172a;\n    border-left: 5px solid #16a34a;\n    border-radius: 0 6px 6px 0;\n    padding: 20px 28px;\n    margin: 28px 0;\n    display: flex;\n    align-items: center;\n    gap: 20px;\n  }\n  .ms-warranty-badge { background: #16a34a; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ms-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ms-warranty strong { color: #ffffff; }\n\n  .ms-fitment { list-style: none; margin: 14px 0 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }\n  @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n  .ms-fitment li { font-size: 0.93em; color: #334155; padding: 8px 12px; background: #f0fdf4; border-left: 3px solid #16a34a; border-radius: 0 4px 4px 0; }\n\n  .ms-divider { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }\n  .ms-langboard { font-weight: 700; color: #14532d; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ms-wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv class=\"ms-hero\"\u003e\n    \u003cspan class=\"ms-hero-badge\"\u003eMicro Series | JL 12TW3 | Enclosure Only\u003c\/span\u003e\n    \u003ch2\u003eBuilt Around the JL Audio 12TW3.\u003cbr\u003e0.80 cu ft. Exactly.\u003c\/h2\u003e\n    \u003cp\u003eJL Audio publishes 0.80 cubic feet as the optimum sealed volume for the 12TW3. The Proline X Micro Series enclosure for the 12TW3 delivers exactly that, net, after displacement, in a double-layer stack-fab build that is 6.75 inches deep. Tab-ear cutout machined to JL Audio's exact geometry. 8\/32 threaded inserts for machine screw mounting. Front-firing or downfiring with feet included.\u003c\/p\u003e\n    \u003cdiv class=\"ms-hero-stats\"\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e0.80\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCu Ft Net, JL Optimum\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e6.75\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eTotal Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e1.5\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eDouble-Layer Baffle\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e3.5\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eMax Mount Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ENCLOSURE ONLY NOTICE --\u003e\n  \u003cdiv class=\"ms-alert\"\u003e\n    \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The JL Audio 12TW3 subwoofer is not included. This enclosure fits both the 12TW3-D4 and 12TW3-D8, the tab-ear cutout geometry and mounting hardware are identical across both variants.\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 1: Volume --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e0.80 Cubic Feet, JL Audio's Published Optimum, Delivered Net\u003c\/h3\u003e\n    \u003cp\u003eThe JL Audio 12TW3 has a Fs of 26.5 Hz, a Qts of 0.53, and a Vas of 48.7 liters. JL Audio's published optimum sealed volume for this driver is 0.80 cubic feet. At that volume the system Qtc lands at the target JL Audio designed for in compact sealed applications. Producing controlled extension into the low 30s with the tight transient response the TW3 platform is built around.\u003c\/p\u003e\n    \u003cp\u003eGeneric 12\" shallow-mount enclosures are built to approximate volumes and sold as universal fits. This enclosure is built to one spec, for one driver. The 0.80 cubic foot figure is net internal volume. Calculated after driver displacement, double-layer baffle thickness, and polyfill are subtracted. Not approximated from external box dimensions before hardware is accounted for.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 2: Construction --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eStack-Fab Construction with a 1.5\" Double-Layer Baffle\u003c\/h3\u003e\n    \u003cp\u003eThe front baffle is a double-layer stack-fab build, two CNC-cut Langboard Elite MDF panels bonded to 1.5 inches total thickness. The baffle carries the driver's mechanical mounting load and sustains the full acoustic pressure differential between the sealed interior and exterior on every bass transient. At 400 watts RMS on a 12\" cone, a single 3\/4\" panel resonates at frequencies within the driver's operating range. Two bonded layers eliminate that coloration at the structural level.\u003c\/p\u003e\n    \u003cp\u003eThe rest of the enclosure uses CNC-cut interlocking dado joints at every panel intersection, mechanical interlock before adhesive, adhesive seal after. Neither alone is the joint. The 6.75\" total depth gives each side panel more inherent geometric rigidity than the ultra-shallow Wavtech builds in the same series, which means the dado joinery here is reinforcing an already more rigid structure rather than compensating for shallow panel depth.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHY CARDS --\u003e\n  \u003cdiv class=\"ms-card-grid\"\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eVolume\u003c\/span\u003e\n      \u003ch4\u003e0.80 cu ft Net, JL Audio's Published Optimum\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eJL Audio specifies \u003cstrong\u003e0.80 cubic feet\u003c\/strong\u003e as the optimum sealed volume for the 12TW3. This enclosure delivers that number net. After driver displacement, double-layer baffle thickness, and polyfill are subtracted. Not approximated from external dimensions.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eBaffle\u003c\/span\u003e\n      \u003ch4\u003e1.5\" Double-Layer: Baffle Resonance Eliminated\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eTwo bonded layers of \u003cstrong\u003eLangboard Elite 3\/4\" MDF\u003c\/strong\u003e produce a 1.5-inch baffle that does not flex or resonate at 400 watts RMS on a 12\" driver. Panel resonance at the baffle adds coloration to bass output. Double-layer construction eliminates it at the source.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eMounting\u003c\/span\u003e\n      \u003ch4\u003e8\/32 Threaded Inserts: Correct for Tab-Ear Drivers\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe 12TW3 uses injection-molded plastic mounting ears. Tapered wood screws apply outward pressure to those ears and will crack them under sustained vibration. \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws eliminate this failure mode entirely, the driver mounts to steel, not MDF, with even clamping force across all four ears.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eWiring\u003c\/span\u003e\n      \u003ch4\u003eProline X Terminal Cup: Pre-Wired with 12g OFC\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with \u003cstrong\u003e12-gauge OFC\u003c\/strong\u003e run internally to the driver location. Connect your amplifier run to the terminal and mount the driver. No internal wiring work required.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eCutout\u003c\/span\u003e\n      \u003ch4\u003e11-5\/8\" Tab-Ear Geometry: Machined for the 12TW3\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe baffle cutout is machined to the \u003cstrong\u003e12TW3's tab-ear geometry\u003c\/strong\u003e: 11-5\/8\" (295mm) with mounting points positioned for the TW3's four-ear spacing. The driver seats flush against the baffle gasket without shimming or modification.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eConfiguration\u003c\/span\u003e\n      \u003ch4\u003eFront-Firing or Downfiring: Feet Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eRubber feet for \u003cstrong\u003edownfiring installation\u003c\/strong\u003e are included. Run it front-firing in a standard trunk or cargo orientation, or flip it downward to couple bass output with the vehicle floor. The 12TW3's no-pole-vent design means there are no motor ventilation concerns in either orientation.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eStructure\u003c\/span\u003e\n      \u003ch4\u003eDado Joinery: No Joint Relies on Glue Alone\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eEvery panel joint uses CNC-cut interlocking \u003cstrong\u003edado slots\u003c\/strong\u003e: the mechanical interlock holds panel alignment under load before adhesive is applied. The adhesive seals the joint permanently. Both together produce an airtight, acoustically inert enclosure that holds its integrity under sustained use.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003ePolyfill Pre-Installed at the Factory\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003ePolyfill is packed and installed at the factory before the enclosure ships. It acoustically extends effective internal volume for improved low-frequency output without adding external size. \u003cstrong\u003eFactory installation\u003c\/strong\u003e ensures consistent packing density on every unit, not left to the installer to approximate.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eReinforcement\u003c\/span\u003e\n      \u003ch4\u003eDowel-Reinforced Stack Fab: Mechanical Strength Beyond the Joint\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe stack-fab assembly is further reinforced with \u003cstrong\u003edowels throughout the construction\u003c\/strong\u003e. Dowels add mechanical alignment and shear resistance at panel joints beyond what dado joinery and adhesive alone provide. Locking the panel stack against lateral movement under the sustained excursion load a sealed enclosure generates at volume. The result is a structure that holds its geometry and its acoustic seal over years of real-world use.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- HIGHLIGHT --\u003e\n  \u003cdiv class=\"ms-highlight\"\u003e\n    \u003ch3\u003eReady to Mount. Ready to Wire. Ready to Downfire.\u003c\/h3\u003e\n    \u003cp\u003eThe enclosure ships fully prepped. The \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with 12-gauge OFC. Connect your amplifier run and that side is complete. The double-layer baffle uses \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws included. Both critical for the 12TW3's tab-ear mounting system. \u003cstrong\u003eRubber feet for downfiring\u003c\/strong\u003e are included. Polyfill is already packed.\u003c\/p\u003e\n    \u003ch3\u003eImpedance Options: 12TW3-D4 and 12TW3-D8\u003c\/h3\u003e\n    \u003cp\u003eThe JL Audio 12TW3 is available as the \u003cstrong\u003e12TW3-D4\u003c\/strong\u003e (dual 4-ohm voice coils) and the \u003cstrong\u003e12TW3-D8\u003c\/strong\u003e (dual 8-ohm voice coils). Both variants are physically identical and fit this enclosure. With the D4 wired in parallel you present a 2-ohm load; series presents 8 ohms. With the D8 wired in parallel you present a 4-ohm load; series presents 16 ohms. Most builds run the D4 at 2 ohms into a 2-ohm-stable monoblock in the 300–400 watt RMS range.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FITMENT --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n    \u003cp\u003eAt 26\" × 14.75\" × 6.75\", this enclosure opens install locations that a conventional 0.80 cu ft sealed 12\" box, typically 10–14\" deep, cannot reach:\u003c\/p\u003e\n    \u003cul class=\"ms-fitment\"\u003e\n      \u003cli\u003eBehind-seat: full-size crew cab and extended cab trucks\u003c\/li\u003e\n      \u003cli\u003eUnder rear bench: SUVs and full-size vans\u003c\/li\u003e\n      \u003cli\u003eTrunk floor: full-size sedans and wagons\u003c\/li\u003e\n      \u003cli\u003eCargo floor: crossovers and mid-size SUVs\u003c\/li\u003e\n      \u003cli\u003eHatch floor: sports cars and hatchbacks\u003c\/li\u003e\n      \u003cli\u003eBehind-seat downfire. Truck cabs where floor coupling improves response\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WARRANTY --\u003e\n  \u003cdiv class=\"ms-warranty\"\u003e\n    \u003cdiv class=\"ms-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003e\u003cstrong\u003eAll Proline X Micro Series enclosures carry a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built and inspected in our Tullahoma, Tennessee facility before shipment. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003chr class=\"ms-divider\"\u003e\n\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eMade in Tennessee\u003c\/h3\u003e\n    \u003cp\u003eEvery Proline X Micro Series enclosure is CNC-cut and hand-assembled in Tullahoma, Tennessee on ShopSabre CNC routers. Internal volume, dado joint depth, tab-ear cutout geometry, baffle layer count, and terminal placement are all held to spec on every unit. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e throughout: a named, mill-documented board with published density, internal bond, and screw-holding specifications.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43172437688409,"sku":"M12-S JL","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/jl-audio-10tw3-d4-in-proline-x-micro-series-enclosureenclosed-subwooferproline-x-745238.jpg?v=1774209158"},{"product_id":"proline-x-micro-series-12-sealed-enclosure-fits-resonix-gus-12","title":"Proline X Micro Series 12\" Sealed Enclosure | Built for ResoNix GUS-12","description":"\u003c!-- ============================================================\n     PROLINE X MICRO SERIES: ResoNix GUS-12\n     SEALED 12\" ENCLOSURE ONLY\n     Color system: Green (#16a34a primary)\n     ============================================================ --\u003e\n\u003cstyle\u003e\n  .ms-wrap * { box-sizing: border-box; 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font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ms-card-divider { height: 2px; background: #16a34a; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ms-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ms-card p strong { color: #14532d; }\n\n  .ms-warranty {\n    background: #0f172a;\n    border-left: 5px solid #16a34a;\n    border-radius: 0 6px 6px 0;\n    padding: 20px 36px;\n    margin: 28px 0;\n    display: flex;\n    align-items: center;\n    gap: 20px;\n  }\n  .ms-warranty-badge { background: #16a34a; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ms-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ms-warranty strong { color: #ffffff; }\n\n  .ms-fitment { list-style: none; margin: 14px 0 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }\n  @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n  .ms-fitment li { font-size: 0.93em; color: #334155; padding: 8px 12px; background: #f0fdf4; border-left: 3px solid #16a34a; border-radius: 0 4px 4px 0; }\n\n  .ms-divider { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }\n  .ms-langboard { font-weight: 700; color: #14532d; }\n\u003c\/style\u003e\n\u003cdiv class=\"ms-wrap\"\u003e\n\u003c!-- HERO --\u003e\n\u003cdiv class=\"ms-hero\"\u003e\n\u003cdiv class=\"ms-hero-badges\"\u003e\n\u003cspan class=\"ms-hero-badge\"\u003eMicro Series | GUS-12 | Enclosure Only\u003c\/span\u003e\u003cspan class=\"ms-hero-revision\"\u003eDesign Revision 5.20.26\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-hero-middle\"\u003e\n\u003cdiv class=\"ms-hero-text\"\u003e\n\u003ch2\u003eBuilt Exclusively for the ResoNix GUS-12.\u003cbr\u003eThe Most Linear Shallow 12\" Available.\u003c\/h2\u003e\n\u003cp\u003eThe ResoNix GUS-12 has a measured Fs of 14.54 Hz, a Qts of 0.28, and Klippel-verified Xmax of 20.69mm, backed by published LSI data from the same testing program that has measured every major shallow driver on the market. The Proline X Micro Series enclosure delivers exactly 0.80 cubic feet of net sealed airspace (ResoNix's 0.75 cu ft recommendation plus 0.047 cu ft of driver displacement) in a double-layer stack-fab build that is 6.75 inches deep.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-hero-image\"\u003e\u003cimg alt=\"Proline X Micro Series 12-inch sealed enclosure for ResoNix GUS-12\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-12-sealed-enclosure-fits-resonix-gus-12subwoofer-enclosuresproline-x-1751548.jpg?v=1775617929\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-hero-stats\"\u003e\n\u003cdiv class=\"ms-stat\"\u003e\n\u003cspan class=\"ms-stat-num\"\u003e0.80\u003c\/span\u003e \u003cspan class=\"ms-stat-label\"\u003eCu Ft Net (Displacement Correct)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-stat\"\u003e\n\u003cspan class=\"ms-stat-num\"\u003e6.75\"\u003c\/span\u003e \u003cspan class=\"ms-stat-label\"\u003eTotal Depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-stat\"\u003e\n\u003cspan class=\"ms-stat-num\"\u003e14.54\u003c\/span\u003e \u003cspan class=\"ms-stat-label\"\u003eDriver Fs (Hz)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-stat\"\u003e\n\u003cspan class=\"ms-stat-num\"\u003e800W\u003c\/span\u003e \u003cspan class=\"ms-stat-label\"\u003eDriver RMS Rating\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE ONLY NOTICE --\u003e\n\u003cdiv class=\"ms-alert\"\u003e\n\u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The ResoNix GUS-12 subwoofer is not included and must be purchased directly from ResoNix Sound Solutions. This enclosure is designed exclusively for the GUS-12. No other driver shares its cutout geometry or is served by this specific volume target.\u003c\/div\u003e\n\u003c!-- SECTION 1: The Volume Math --\u003e\n\u003cdiv class=\"ms-section\"\u003e\n\u003ch3\u003e0.80 cu ft: How the Volume Was Calculated\u003c\/h3\u003e\n\u003cp\u003eResoNix publishes a recommended sealed enclosure of 0.75 cubic feet for the GUS-12 to achieve 0.707 Qtc. The GUS-12 has a published driver displacement of 0.047 cubic feet. Building a box to a gross internal volume of 0.75 cubic feet and then installing the driver would reduce the net acoustic airspace by 0.047, leaving the driver with only 0.703 cubic feet of effective volume and a Qtc slightly above target.\u003c\/p\u003e\n\u003cp\u003eThe correct approach is to build the gross internal volume at 0.75 + 0.047 = 0.797 cubic feet, so that after driver displacement is subtracted, the driver sees exactly 0.75 cubic feet of net acoustic airspace. The M12-S GUS enclosure is built to a gross volume that delivers \u003cstrong\u003e0.80 cubic feet net\u003c\/strong\u003e after displacement, hitting ResoNix's recommended target accurately rather than approximately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 1B: Why the External Dimensions Look Bigger Than They Should --\u003e\n\u003cdiv class=\"ms-section\"\u003e\n\u003ch3\u003e\"If I Do the Math on the External Dimensions, the Volume Looks Too Big\"\u003c\/h3\u003e\n\u003cp\u003eThis is the most common question we get on every GUS enclosure. The math customers run looks like this: external dimensions of 26\" × 14.75\" × 6.75\" subtract 3\/4\" walls on all six sides, leaving an assumed internal cavity of 24.5\" × 13.25\" × 5.25\". That works out to 1,704 cubic inches, or roughly 0.99 cubic feet. The listed net volume is 0.80 cubic feet, a difference of nearly 0.20 cu ft, which looks like the enclosure must be oversized by about 24%.\u003c\/p\u003e\n\u003cp\u003eThat math assumes four things that are not true on a Proline X stack-fab enclosure:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1. The walls are not 3\/4\" on every side.\u003c\/strong\u003e The front baffle is a double-layer stack-fab build at 1.5 inches thick, twice the assumed wall thickness. That alone removes more internal depth than a 3\/4\" calculation accounts for.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. The enclosure is not a perfect rectangle.\u003c\/strong\u003e Viewed from above, all four corners are radiused at 3 inches. This is a deliberate design choice for two reasons: the rounded corners break up the parallel-wall geometry that creates internal standing waves, and they produce a finished shape that fits cleanly against vehicle interior surfaces without sharp corners catching on trim or upholstery. The 3\" radii remove measurable internal volume that an external-minus-walls calculation assumes is open airspace.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. The area directly behind the driver's magnet is precision-milled.\u003c\/strong\u003e This is a deliberate engineering step that serves two purposes. First, it allows us to make fine volume adjustments to hit the target airspace exactly. Second, and more importantly, it increases the open area immediately behind the driver's rear vent. The GUS-12's pole vent is part of the driver's voice coil cooling system. Air flows through the vent during cone movement, carrying heat away from the voice coil former. If the area immediately behind the vent is restricted, backpressure builds against that airflow and voice coil cooling is compromised. Most enclosure manufacturers do not understand this airflow dynamic, and even fewer engineer around it. We do.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. The driver itself displaces 0.047 cubic feet once installed.\u003c\/strong\u003e The basket, motor, and pole structure occupy roughly 81 cubic inches inside the chamber. This is not subtracted from a back-of-napkin external calculation, but it is subtracted from what the driver acoustically loads into.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow we actually calculate volume.\u003c\/strong\u003e Our engineering approach is built on precision, and it is different from how most enclosure manufacturers calculate airspace and different from the math any customer can do from external dimensions. A Proline X stack-fab enclosure is built from individually CNC-cut layers, each with its own machined opening. We calculate the precise internal volume of every layer's opening, then sum those layer-by-layer volumes to arrive at the actual net airspace inside the assembled enclosure. No one else in this industry calculates net volume this way. It is the only method that produces a genuinely accurate account of the airspace a driver sees once the enclosure is built. This is the same level of engineering precision ResoNix applies to the GUS-12 driver itself, and it is why the 0.80 cubic foot figure is exact rather than approximate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 2: The Driver --\u003e\n\u003cdiv class=\"ms-section\"\u003e\n\u003ch3\u003eWhy the GUS-12 Is Unlike Every Other Driver in This Series\u003c\/h3\u003e\n\u003cp\u003eThe GUS-12 was engineered by ResoNix Sound Solutions, the same operation that independently Klippel-tests more car audio subwoofers than anyone else publishing data in the enthusiast market. The GUS-12 was built specifically to outperform every driver they had measured on BL linearity, Cms symmetry, inductance stability, and verified Xmax. The data is published and verifiable.\u003c\/p\u003e\n\u003cp\u003eQts of 0.28 is the number that defines this driver's character in an enclosure. At 0.75 cubic feet sealed, the system Qtc targets 0.707, producing flat anechoic response with deep extension. Fs at 14.54 Hz means the driver's natural resonance is below the usable range of virtually any car audio system, which gives the sealed alignment maximum low-frequency extension capability before rolloff begins. The GUS-12 is engineered for accuracy, deep extension, and low distortion at real-world listening levels. The copper shorting rings, titanium voice coil former, and Nomex\/carbon fiber cone are engineering decisions that show up in the distortion measurements, not just the spec sheet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 3: Construction --\u003e\n\u003cdiv class=\"ms-section\"\u003e\n\u003ch3\u003e1.5\" Double-Layer Baffle. Stack Fab. Dowel Reinforced.\u003c\/h3\u003e\n\u003cp\u003eAt 800 watts RMS the GUS-12 generates more sustained internal pressure than any other single driver in the Micro Series lineup. The front baffle is a double-layer stack-fab build: two CNC-cut Langboard Elite MDF panels bonded to 1.5 inches total. The stack-fab assembly is further reinforced with dowels throughout, adding between-layer tension reinforcement that locks the panel stack against shear movement under sustained high-power operation.\u003c\/p\u003e\n\u003cp\u003eThe stack-fab construction itself does the joining: every CNC-cut layer interlocks with the layers above and below it, eliminating single-layer butt joints entirely. The 6.75-inch total depth gives each side wall more inherent geometric rigidity than the ultra-shallow Wavtech builds in this series, and the Langboard Elite MDF used throughout has published 200 psi internal bond and 410,000 psi MOE specifications that hold up under sustained high-power use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- WHY CARDS --\u003e\n\u003cdiv class=\"ms-card-grid\"\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eVolume\u003c\/span\u003e\n\u003ch4\u003e0.80 cu ft: ResoNix Recommendation + Driver Displacement\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eResoNix recommends \u003cstrong\u003e0.75 cu ft\u003c\/strong\u003e net for 0.707 Qtc. GUS-12 driver displacement is \u003cstrong\u003e0.047 cu ft\u003c\/strong\u003e. This enclosure is built to 0.75 + 0.047 = 0.797 gross volume, delivering exactly 0.75 cu ft net to the driver after displacement is accounted for.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eDriver\u003c\/span\u003e\n\u003ch4\u003eKlippel-Verified Xmax, Not a Marketing Number\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe GUS-12's \u003cstrong\u003e20.69mm Xmax at BL 70%\u003c\/strong\u003e is a Klippel large-signal measurement, the same methodology used to test every driver on ResoNix's independent testing platform. BL symmetry, Cms linearity, and Le stability are all published. The spec sheet is the measurement, not the marketing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eBaffle\u003c\/span\u003e\n\u003ch4\u003e1.5\" Double-Layer Dowel-Reinforced Stack Fab\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eTwo bonded \u003cstrong\u003eLangboard Elite 3\/4\" MDF\u003c\/strong\u003e layers at 1.5 inches total, further reinforced with \u003cstrong\u003edowels throughout\u003c\/strong\u003e. At 800 watts RMS, baffle resonance and panel flex are structural failure modes. Double-layer construction with dowel reinforcement eliminates both.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eMounting\u003c\/span\u003e\n\u003ch4\u003e8\/32 Threaded Inserts with Machine Screws Included\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe baffle is fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e on the back face. Stainless machine screws are included. The GUS-12 mounts to steel, not MDF. Consistent clamping force, no stripping risk under sustained high-power use, and clean reinstallation when service is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eWiring\u003c\/span\u003e\n\u003ch4\u003eProline X Terminal Cup, Pre-Wired with 12g OFC\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with \u003cstrong\u003e12-gauge OFC\u003c\/strong\u003e run internally to the driver location. Connect your amplifier run to the terminal and mount the driver. No internal wiring work required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eCutout\u003c\/span\u003e\n\u003ch4\u003eDirect-Fit, Machined for the GUS-12\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe baffle cutout is machined to the \u003cstrong\u003eGUS-12's mounting diameter\u003c\/strong\u003e. The driver seats flush, seals against the rubber mounting ring gasket the GUS-12 includes, and mounts to the threaded inserts without shimming or modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eConfiguration\u003c\/span\u003e\n\u003ch4\u003eFront-Firing or Downfiring, Feet Included\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eRubber feet for \u003cstrong\u003edownfiring installation\u003c\/strong\u003e are included. The GUS-12 features a vented rear cone assembly that allows the pole vent to be fully blocked, making downfire in a flush-mounted application structurally and acoustically viable without compromise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eAcoustic\u003c\/span\u003e\n\u003ch4\u003ePolyfill Pre-Installed\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003ePolyfill is factory-installed. It acoustically dampens internal panel reflections without artificially altering volume. \u003cstrong\u003eFactory installation\u003c\/strong\u003e ensures consistent packing density across every unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ms-card\"\u003e\n\u003cspan class=\"ms-card-label\"\u003eReinforcement\u003c\/span\u003e\n\u003ch4\u003eDowel-Reinforced Stack Fab: Between-Layer Tension Locking\u003c\/h4\u003e\n\u003cdiv class=\"ms-card-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe stack-fab assembly uses \u003cstrong\u003edowels throughout the construction\u003c\/strong\u003e as between-layer tension reinforcement, locking the panel stack against shear movement independent of adhesive condition. At 800 watts RMS across a sealed enclosure, the lateral forces on panel joints are sustained and significant. Dowels work with the interlocking stack-fab geometry and adhesive bonding to hold the assembly together over years of high-power use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- HIGHLIGHT --\u003e\n\u003cdiv class=\"ms-highlight\"\u003e\n\u003ch3\u003eReady to Mount. Ready to Wire. Ready to Perform.\u003c\/h3\u003e\n\u003cp\u003eThe enclosure ships fully prepped. The \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with 12-gauge OFC. Connect your amplifier run and wiring is complete. The double-layer baffle uses \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws included. \u003cstrong\u003eRubber feet for downfiring\u003c\/strong\u003e are included. Polyfill is factory-installed.\u003c\/p\u003e\n\u003cp\u003eThe GUS-12's Qts of 0.28 and Fs of 14.54 Hz produce deep extension and low distortion in this 0.75 cubic foot sealed alignment. The copper shorting rings, titanium voice coil former, and Nomex\/carbon fiber cone deliver measurable distortion performance that separates the GUS-12 from every other shallow 12 in its category.\u003c\/p\u003e\n\u003ch3\u003eImpedance Options: D2 and D4\u003c\/h3\u003e\n\u003cp\u003eThe GUS-12 is available as a \u003cstrong\u003eDual 2-ohm\u003c\/strong\u003e and \u003cstrong\u003eDual 4-ohm\u003c\/strong\u003e configuration. Wire the D2 parallel for 1 ohm, series for 4 ohms. Wire the D4 parallel for 2 ohms, series for 8 ohms. Most builds run the D4 at 2 ohms into a quality 2-ohm-stable monoblock. Confirm your amplifier's stable impedance before selecting the voice coil configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- FITMENT --\u003e\n\u003cdiv class=\"ms-section\"\u003e\n\u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n\u003cp\u003eAt 26\" × 14.75\" × 6.75\", this enclosure opens install locations that a conventional 0.75 cu ft sealed 12\" box (typically 10 to 14 inches deep) cannot reach:\u003c\/p\u003e\n\u003cul class=\"ms-fitment\"\u003e\n\u003cli\u003eBehind-seat: full-size crew cab and extended cab trucks\u003c\/li\u003e\n\u003cli\u003eTrunk floor: full-size sedans, wagons, and sport sedans\u003c\/li\u003e\n\u003cli\u003eUnder rear bench: SUVs and full-size vans\u003c\/li\u003e\n\u003cli\u003eCargo floor: crossovers and mid-size SUVs\u003c\/li\u003e\n\u003cli\u003eHatch floor: sports cars and hatchbacks\u003c\/li\u003e\n\u003cli\u003eSQ competition builds where depth is the constraint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- WARRANTY --\u003e\n\u003cdiv class=\"ms-warranty\"\u003e\n\u003cdiv class=\"ms-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eAll Proline X Micro Series enclosures carry a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built and inspected in our Tullahoma, Tennessee facility before shipment. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"ms-divider\"\u003e\n\u003cdiv class=\"ms-section\"\u003e\n\u003ch3\u003eMade in Tennessee\u003c\/h3\u003e\n\u003cp\u003eEvery Proline X Micro Series enclosure is CNC-cut and hand-assembled in Tullahoma, Tennessee on ShopSabre CNC routers. Internal volume, cutout geometry, layer-by-layer opening dimensions, baffle layer count, dowel placement, and terminal positioning are all held to spec on every unit. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e throughout: named, mill-documented, published density and bond specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43172475502681,"sku":"M12-S Gus","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-12-sealed-enclosure-fits-resonix-gus-12subwoofer-enclosuresproline-x-1751548.jpg?v=1775617929"},{"product_id":"proline-x-micro-series-dual-12-sealed-enclosure-fits-resonix-gus-12","title":"Proline X Micro Series Dual 12\" Sealed Enclosure | Built for ResoNix GUS-12","description":"\u003c!-- ============================================================\n PROLINE X MICRO SERIES — DUAL ResoNix GUS-12\n SEALED DUAL 12\" ENCLOSURE ONLY\n Color system: Green (#16a34a primary)\n SKU: M12D-S GUS\n ============================================================ --\u003e\n\n\u003cstyle\u003e\n .ms-wrap * { box-sizing: border-box; }\n .ms-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; margin: 0 auto; }\n .ms-hero { background: linear-gradient(135deg, #0f172a 0%, #14532d 100%); border-radius: 8px; padding: 40px 36px; margin-bottom: 32px; position: relative; overflow: hidden; }\n .ms-hero::before { content: ''; position: absolute; top: -40px; right: -40px; width: 220px; height: 220px; background: rgba(22,163,74,0.12); border-radius: 50%; }\n .ms-hero-badge { display: inline-block; background: transparent; border: 2px solid #16a34a; color: #86efac; font-size: 0.75em; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 4px 14px; border-radius: 20px; margin-bottom: 16px; }\n .ms-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n .ms-hero p { color: #cbd5e1; font-size: 1em; margin: 0 0 24px 0; max-width: 660px; line-height: 1.7; }\n .ms-hero-stats { display: flex; gap: 28px; flex-wrap: wrap; }\n .ms-stat { text-align: center; 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font-size: 0.97em; }\n .ms-highlight p:last-child { margin-bottom: 0; }\n .ms-alert { background: #dcfce7; border: 1px solid #16a34a; border-radius: 6px; padding: 14px 18px; margin: 20px 0; font-size: 0.93em; color: #166534; }\n .ms-alert strong { color: #14532d; }\n .ms-wiring { background: #0f172a; border-radius: 6px; padding: 24px 28px; margin: 24px 0; }\n .ms-wiring h3 { color: #86efac; font-size: 1em; font-weight: 700; margin: 0 0 16px 0; letter-spacing: 0.05em; text-transform: uppercase; }\n .ms-wiring-row { display: flex; align-items: center; gap: 14px; padding: 10px 0; border-bottom: 1px solid #1e293b; }\n .ms-wiring-row:last-child { border-bottom: none; padding-bottom: 0; }\n .ms-wiring-load { background: #16a34a; color: #ffffff; font-size: 1.1em; font-weight: 800; padding: 8px 16px; border-radius: 4px; min-width: 60px; text-align: center; }\n .ms-wiring-desc { color: #cbd5e1; font-size: 0.93em; line-height: 1.5; }\n .ms-wiring-desc strong { color: #ffffff; }\n .ms-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 24px 0; }\n @media (max-width: 600px) { .ms-card-grid { grid-template-columns: 1fr; } }\n .ms-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 3px solid #16a34a; border-radius: 6px; padding: 22px; }\n .ms-card-label { display: inline-block; background: #16a34a; color: #ffffff; font-size: 0.68em; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 3px 10px; border-radius: 3px; margin-bottom: 10px; }\n .ms-card h4 { color: #14532d; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n .ms-card-divider { height: 2px; background: #16a34a; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n .ms-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n .ms-card p strong { color: #14532d; }\n .ms-warranty { background: #0f172a; border-left: 5px solid #16a34a; border-radius: 0 6px 6px 0; padding: 20px 28px; margin: 28px 0; display: flex; align-items: center; gap: 20px; }\n .ms-warranty-badge { background: #16a34a; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n .ms-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n .ms-warranty strong { color: #ffffff; }\n .ms-fitment { list-style: none; margin: 14px 0 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }\n @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n .ms-fitment li { font-size: 0.93em; color: #334155; padding: 8px 12px; background: #f0fdf4; border-left: 3px solid #16a34a; border-radius: 0 4px 4px 0; }\n .ms-divider { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }\n .ms-langboard { font-weight: 700; color: #14532d; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ms-wrap\"\u003e\n\n \u003c!-- HERO --\u003e\n \u003cdiv class=\"ms-hero\"\u003e\n \u003cspan class=\"ms-hero-badge\"\u003eMicro Series | Dual GUS-12 | Enclosure Only\u003c\/span\u003e\n \u003ch2\u003eDual GUS-12. 1.60 cu ft Total.\u003cbr\u003e0.75 cu ft Acoustic Per Driver: ResoNix's Optimum.\u003c\/h2\u003e\n \u003cp\u003eTwo ResoNix GUS-12 drivers. Two acoustically isolated sealed chambers. Each chamber delivers 0.80 cubic feet gross, which after the GUS-12's 0.047 cubic foot driver displacement equals exactly 0.75 cubic feet of net acoustic airspace per driver. ResoNix's published 0.707 Qtc target. In 7.5 inches of total depth. 1,600 watts RMS combined. The most technically demanding dual-driver build in the Micro Series.\u003c\/p\u003e\n \u003cdiv class=\"ms-hero-stats\"\u003e\n \u003cdiv class=\"ms-stat\"\u003e\n \u003cspan class=\"ms-stat-num\"\u003e1.60\u003c\/span\u003e\n \u003cspan class=\"ms-stat-label\"\u003eCu Ft Net Total\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ms-stat\"\u003e\n \u003cspan class=\"ms-stat-num\"\u003e0.75\u003c\/span\u003e\n \u003cspan class=\"ms-stat-label\"\u003eCu Ft Acoustic Per Driver\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ms-stat\"\u003e\n \u003cspan class=\"ms-stat-num\"\u003e7.5\"\u003c\/span\u003e\n \u003cspan class=\"ms-stat-label\"\u003eTotal Depth\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ms-stat\"\u003e\n \u003cspan class=\"ms-stat-num\"\u003e1,600W\u003c\/span\u003e\n \u003cspan class=\"ms-stat-label\"\u003eCombined RMS Rating\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- ENCLOSURE ONLY NOTICE --\u003e\n \u003cdiv class=\"ms-alert\"\u003e\n \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e ResoNix GUS-12 subwoofers are not included and must be purchased separately from ResoNix Sound Solutions. Both the D2 and D4 variants fit this enclosure. Select the impedance variant that matches your amplifier's stable load before ordering.\n \u003c\/div\u003e\n\n \u003c!-- SECTION 1: Volume Math --\u003e\n \u003cdiv class=\"ms-section\"\u003e\n \u003ch3\u003e0.80 cu ft Per Chamber: 0.75 cu ft Acoustic After Displacement\u003c\/h3\u003e\n \u003cp\u003eResoNix recommends 0.75 cubic feet of net acoustic airspace per GUS-12 for 0.707 Qtc. The GUS-12 has a published driver displacement of 0.047 cubic feet. Building each chamber to a gross volume of 0.75 cubic feet and then installing the driver would leave only 0.703 cubic feet of acoustic airspace. Below the recommendation. The correct gross build volume is 0.75 + 0.047 = 0.797 cubic feet per chamber.\u003c\/p\u003e\n \u003cp\u003eEach chamber in the M12D-S GUS is built to deliver \u003cstrong\u003e0.80 cubic feet gross\u003c\/strong\u003e: after the GUS-12 is installed, each driver sees \u003cstrong\u003e0.75 cubic feet of net acoustic airspace\u003c\/strong\u003e, exactly matching ResoNix's published optimum. Total net acoustic volume across both chambers is 1.50 cubic feet. Total gross enclosure volume is 1.60 cubic feet. The listed 1.60 cu ft is the gross figure: the acoustic figure that matters for each driver is 0.75 cu ft per chamber.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- SECTION 2: Why Dual GUS-12 --\u003e\n \u003cdiv class=\"ms-section\"\u003e\n \u003ch3\u003eTwo GUS-12 Drivers: More Output, Same Alignment Character\u003c\/h3\u003e\n \u003cp\u003eThe GUS-12's Qts of 0.28 and Fs of 14.54 Hz define both its performance ceiling and its operating requirements. A single GUS-12 in the correct enclosure produces flat anechoic response extending well below 20 Hz, but at 800 watts RMS and a single 12\" cone, output in large vehicle cabins or competitive environments has a ceiling. Two GUS-12 drivers in isolated 0.75 cubic foot chambers double the cone displacement and the combined power handling to 1,600 watts RMS, while each driver still operates in exactly the enclosure volume it requires.\u003c\/p\u003e\n \u003cp\u003eThe acoustic character from the single GUS-12 build carries forward here. Both drivers have Qts of 0.28, and the system Qtc in each chamber targets 0.707: flat anechoic response with the deep low-frequency extension the driver's motor and suspension are engineered to deliver. Two drivers make that response roughly 3 dB louder at all bass frequencies. They do not change its character. The dual GUS-12 delivers more output than any other shallow 12\" build in this depth class.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- SECTION 3: Construction --\u003e\n \u003cdiv class=\"ms-section\"\u003e\n \u003ch3\u003e1,600W Combined: Construction Built to Match\u003c\/h3\u003e\n \u003cp\u003eThe front baffle is a double-layer stack-fab build, two CNC-cut Langboard Elite MDF panels bonded to 1.5 inches total. The stack-fab assembly is reinforced with dowels throughout, adding mechanical alignment and shear resistance at every panel joint beyond what layer adhesion alone provides. At 1,600 watts RMS combined across two GUS-12 drivers, this is the correct structural standard, not overbuilt relative to the application.\u003c\/p\u003e\n \u003cp\u003eThe chamber divider is CNC-cut to full wall thickness and stacked to the same standard as the exterior panels. It is a structural element with the same rigidity and acoustic seal quality as any wall in the enclosure. Each chamber is independently sealed. Neither driver's acoustic loading affects the other.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- IMPEDANCE BLOCK --\u003e\n \u003cdiv class=\"ms-wiring\"\u003e\n \u003ch3\u003eImpedance Wiring: Know Before You Order\u003c\/h3\u003e\n \u003cdiv class=\"ms-wiring-row\"\u003e\n \u003cdiv class=\"ms-wiring-load\"\u003e1Ω\u003c\/div\u003e\n \u003cdiv class=\"ms-wiring-desc\"\u003e\n\u003cstrong\u003eTwo GUS-12 D2 (Dual 2Ω) each wired parallel Single 1Ω, then both in parallel 0.5Ω.\u003c\/strong\u003e Not recommended. Most amplifiers cannot operate at this load. Wire D2 coils in series for 4Ω per driver, then parallel for 2Ω final instead.\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ms-wiring-row\"\u003e\n \u003cdiv class=\"ms-wiring-load\"\u003e2Ω\u003c\/div\u003e\n \u003cdiv class=\"ms-wiring-desc\"\u003e\n\u003cstrong\u003eTwo GUS-12 D4 (Dual 4Ω) each wired parallel 2Ω per driver, then both in parallel 1Ω. OR two GUS-12 D2 each wired series 4Ω per driver, then both in parallel 2Ω.\u003c\/strong\u003e The D2 series\/parallel at 2Ω is the recommended configuration for most builds.\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ms-wiring-row\"\u003e\n \u003cdiv class=\"ms-wiring-load\"\u003e4Ω\u003c\/div\u003e\n \u003cdiv class=\"ms-wiring-desc\"\u003e\n\u003cstrong\u003eTwo GUS-12 D4 (Dual 4Ω) each wired parallel 2Ω per driver, then both in series 4Ω final.\u003c\/strong\u003e Safest electrical configuration. Broadest amplifier compatibility. Requires strong 4Ω monoblock output to hit the power ceiling these drivers need.\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- WHY CARDS --\u003e\n \u003cdiv class=\"ms-card-grid\"\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eVolume\u003c\/span\u003e\n \u003ch4\u003e0.75 cu ft Acoustic Per Driver: ResoNix's 0.707 Qtc Target\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eEach chamber is built to \u003cstrong\u003e0.80 cu ft gross\u003c\/strong\u003e. After the GUS-12's 0.047 cu ft displacement, each driver sees \u003cstrong\u003e0.75 cu ft of net acoustic airspace\u003c\/strong\u003e: exactly what ResoNix publishes for 0.707 Qtc. Both chambers are identical. Both drivers load correctly.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eOutput\u003c\/span\u003e\n \u003ch4\u003e1,600W RMS Combined: Dual Klippel-Verified Xmax\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eTwo GUS-12 drivers at \u003cstrong\u003e800W RMS each\u003c\/strong\u003e with \u003cstrong\u003e20.69mm Klippel-verified Xmax\u003c\/strong\u003e per driver. Combined cone displacement doubles the output potential of the single GUS-12 build across the entire bass frequency range. Particularly below 30 Hz where cone displacement is the dominant output variable.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eChambers\u003c\/span\u003e\n \u003ch4\u003eDual Chamber, CNC Divider, Stack-Fabbed to Full Wall Thickness, Independently Sealed\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eA CNC-cut, stack-fabbed \u003cstrong\u003echamber divider\u003c\/strong\u003e separates both driver volumes completely. Neither GUS-12 shares airspace with the other. Each driver loads into its own sealed 0.80 cu ft chamber, correct acoustic alignment on both sides, independently maintained.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eBaffle\u003c\/span\u003e\n \u003ch4\u003e1.5\" Double-Layer: Dowel Reinforced Stack Fab\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eTwo bonded layers of \u003cstrong\u003eLangboard Elite 3\/4\" MDF\u003c\/strong\u003e at 1.5 inches total. Dowels reinforce the stack-fab assembly throughout. At 1,600 watts RMS combined, baffle resonance and panel flex are structural failure modes. This construction eliminates both.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eMounting\u003c\/span\u003e\n \u003ch4\u003e8\/32 Threaded Inserts: Machine Screws for Both Drivers\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eBoth baffle positions are fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e. Stainless machine screws are included for both GUS-12 drivers. Each driver mounts to steel, consistent clamping force, no stripping, clean reinstallation at any service interval.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eWiring\u003c\/span\u003e\n \u003ch4\u003eSingle Proline X Terminal Cup: Pre-Wired to Both Drivers\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eOne \u003cstrong\u003eProline X ABS\/carbon fiber terminal cup\u003c\/strong\u003e with stainless hardware and copper ring terminals serves the entire enclosure. Pre-wired internally with \u003cstrong\u003e12-gauge OFC\u003c\/strong\u003e to both driver positions. One amplifier run. Both drivers fed.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eAlignment\u003c\/span\u003e\n \u003ch4\u003eSame 0.707 Qtc Character as the Single GUS-12\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eBoth GUS-12 drivers have \u003cstrong\u003eQts of 0.28, Fs of 14.54 Hz\u003c\/strong\u003e. The system Qtc in each chamber targets 0.707: flat anechoic response with deep extension. The dual build produces roughly \u003cstrong\u003e3 dB more low-frequency output\u003c\/strong\u003e than a single GUS-12 at equivalent power.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ms-card\"\u003e\n \u003cspan class=\"ms-card-label\"\u003eReinforcement\u003c\/span\u003e\n \u003ch4\u003eDowel-Reinforced Stack Fab, 1,600W Structural Standard\u003c\/h4\u003e\n \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n \u003cp\u003eDowels throughout the stack-fab assembly add mechanical alignment and shear resistance at panel joints independent of adhesive condition. Combined with \u003cstrong\u003estack-fab construction and adhesive\u003c\/strong\u003e: three independent mechanical systems locking every joint against the sustained load of 1,600 watts RMS across two GUS-12 drivers.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e\n\n \u003c!-- HIGHLIGHT --\u003e\n \u003cdiv class=\"ms-highlight\"\u003e\n \u003ch3\u003eReady to Mount. Ready to Wire. Built for Active Systems.\u003c\/h3\u003e\n \u003cp\u003eThe M12D-S GUS ships fully prepped. The \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with 12-gauge OFC to both driver positions. Connect your amplifier run and wiring is complete. Both baffles use \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws included. Polyfill is factory-installed in both chambers independently. Rubber feet for downfiring are included.\u003c\/p\u003e\n \u003ch3\u003ePlan Your Wiring Before Selecting the Voice Coil Variant\u003c\/h3\u003e\n \u003cp\u003eThe GUS-12 is available in \u003cstrong\u003eDual 2Ω (D2)\u003c\/strong\u003e and \u003cstrong\u003eDual 4Ω (D4)\u003c\/strong\u003e configurations. With two drivers, the wiring combinations produce multiple final impedance options. The most practical configuration for most builds is \u003cstrong\u003etwo D2 drivers, each wired series (4Ω per driver), then both in parallel (2Ω final)\u003c\/strong\u003e. Broadest amplifier compatibility at a manageable load. See the impedance chart above and confirm your amplifier's stable impedance before ordering the driver variant.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- FITMENT --\u003e\n \u003cdiv class=\"ms-section\"\u003e\n \u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n \u003cp\u003eAt 40\" × 14.75\" × 7.5\", this enclosure is designed for applications where a single GUS-12 is not enough output and a conventional dual 12\" sealed build is too deep. Measure carefully. 40\" wide at 7.5\" deep covers most full-size sedan trunks and SUV cargo floors:\u003c\/p\u003e\n \u003cul class=\"ms-fitment\"\u003e\n \u003cli\u003eTrunk floor: full-size sedans and sport sedans\u003c\/li\u003e\n \u003cli\u003eCargo floor: mid-size and full-size SUVs\u003c\/li\u003e\n \u003cli\u003eBehind-seat: full-size crew cab trucks\u003c\/li\u003e\n \u003cli\u003eUnder rear bench: full-size vans and SUVs\u003c\/li\u003e\n \u003cli\u003eSQ competition builds: maximum GUS-12 output at minimal depth\u003c\/li\u003e\n \u003cli\u003eHigh-output systems: where distortion performance matters as much as SPL\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003c!-- WARRANTY --\u003e\n \u003cdiv class=\"ms-warranty\"\u003e\n \u003cdiv class=\"ms-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n \u003cp\u003e\u003cstrong\u003eAll Proline X Micro Series enclosures carry a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built and inspected in our Tullahoma, Tennessee facility before shipment. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003chr class=\"ms-divider\"\u003e\n\n \u003cdiv class=\"ms-section\"\u003e\n \u003ch3\u003eMade in Tennessee\u003c\/h3\u003e\n \u003cp\u003eEvery Proline X Micro Series enclosure is CNC-cut and hand-assembled in Tullahoma, Tennessee on ShopSabre CNC routers. Chamber volume, divider placement, cutout geometry, baffle layer count, dowel placement, and terminal positioning are all held to spec on every unit. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e throughout: named, mill-documented, published density and bond specifications.\u003c\/p\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43194974306393,"sku":"M12D-S Gus","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-12-sealed-enclosure-fits-resonix-gus-12subwoofer-enclosuresproline-x-2636869.jpg?v=1775710569"},{"product_id":"proline-x-enclosure-professional-series-fits-jl-audio-12w7-subwoofer","title":"Professional Series Ported 12\" Enclosure | JL Audio 12W7AE","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica 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10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}.df-tier{overflow-x:auto;margin:18px 0;border:1px solid #44403c;border-radius:8px}.df-tier table{width:100%;border-collapse:collapse;min-width:660px}.df-tier th{background:#0c0a09;color:#a8a29e;font-size:.74em;text-transform:uppercase;letter-spacing:.6px;padding:12px 14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#001264;color:#99abff}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(91,120,255,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProfessional Series Ported 12\" Enclosure | JL Audio 12W7AE\u003c\/h2\u003e\n  \u003cp\u003eA ported twelve-inch box built to JL Audio's own published numbers for the 12W7AE\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e2.25 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 33.0 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTriple 2.25\" baffle\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the JL Audio 12W7AE\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 33.0 Hz\u003c\/h3\u003e\n  \u003cp\u003eThe JL Audio 12W7AE steps up the 10W7AE's motor and Xmax into a bigger frame, and this cabinet gives it 2.25 cubic feet net, vented at 33.0 Hz through a 26.0 square inch port. F3 lands at 29.4 Hz with 2.64 dB of passband ripple. It is the mid-size box in the professional JL Audio line.\u003c\/p\u003e\n  \u003cp\u003eThe port on this box stays clean up to 390 W before the mouth velocity crosses the chuff threshold, against the coil's own 1000 W power rating; JL Audio's own T\/S are published in full, the same as the smaller 10W7AE. Ripple across the passband holds at 2.64 dB, and the in-car curve stays tight across the passband rather than peaking at either end. There is no sealed reference for the 12W7AE in our data, so no sealed-versus-ported comparison is offered for this driver.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe cabinet\u003c\/h3\u003e\n  \u003cp\u003e34.00\" W x 14.50\" H x 15.00\" D external, internally braced. It ships as a UPS parcel; the price includes shipping in the 48 states.\u003c\/p\u003e\n  \u003cp\u003eThis is our mid-size ported envelope built around the 12W7AE's larger frame and motor.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe numbers to respect\u003c\/h3\u003e\n  \u003cp\u003eJL Audio publish full T\/S for the 12W7AE, and loudspeakerdatabase.com mirrors the same coil-specific figures used here. Scott's Q2 catalog sheet credits this cabinet with two and a half cubic feet net; the store's 2.25 is what actually shipped and is the figure used above.\u003c\/p\u003e\n  \u003cp\u003eThis cabinet is 2.25 cubic feet net, with a slot port of 26.0 square inches tuned to 33.0 Hz; the port stays under the chuff threshold up to 390 W; above that the air at the mouth moves faster than the 17 metres per second where a slot starts to chuff.\u003c\/p\u003e\n  \u003cp\u003eSet a 26 Hz subsonic filter, 24 dB per octave. Below tuning the vent stops loading the cone; with the filter in place the cone reaches 13.7 mm of its 29.0 mm at 1500 W.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43199515590745,"sku":"Pro JL 12W7","price":501.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-professional-series-fits-jl-audio-12w7-subwoofersubwoofer-enclosuresproline-x-7450177.webp?v=1779355149"},{"product_id":"proline-x-enclosure-x-series-fits-dual-kicker-solo-x-12-subwoofer","title":"Proline X Enclosure | X Series | Fits Dual Kicker Solo X 12\" Subwoofer","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:54px 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14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#001264;color:#99abff}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(91,120,255,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProline X Enclosure | X Series | Fits Dual Kicker Solo X 12\" Subwoofer\u003c\/h2\u003e\n  \u003cp\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is built to the published parameters of the Kicker Solo-Baric L7X.\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e6.00 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 31.0 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTriple 2.25\" baffle\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the Kicker Solo-Baric L7X 12\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 31.0 Hz\u003c\/h3\u003e\n  \u003cp\u003eTwo Solo-Baric L7X 12 drivers share this cabinet's airspace: 6.00 cubic feet net total, vented at 31.0 Hz through a 91.0 square inch slot. The per-driver conditions match the single-twelve box; only the total airspace and port area double.\u003c\/p\u003e\n  \u003cp\u003eF3 lands at 26.5 Hz on this pair, and passband ripple holds at 2.61 dB, comfortably inside the ceiling we hold new designs to. The port stays under the chuff threshold up to 707 W combined, above which the mouth velocity crosses Kicker's own reference. Set the subsonic filter at 24 Hz and leave it there below tuning.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe cabinet\u003c\/h3\u003e\n  \u003cp\u003e44.00\" W x 16.00\" H x 27.50\" D external, internally braced. It ships as a UPS parcel; the price includes shipping in the 48 states.\u003c\/p\u003e\n  \u003cp\u003eThis is our dual-twelve envelope, sized for two L7X 12 drivers on one shared chamber. The baffle cutouts are machined to the L7X's square frame, which is not cross-compatible with round-frame drivers of the same nominal size. You source the driver. We handle the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe numbers to respect\u003c\/h3\u003e\n  \u003cp\u003eKicker's own Klippel rig measured the L7X 12 under SKU 49L7X122, the same parameters carried into both drivers in this dual cabinet; the Dual 2 Ohm coil is the one they publish, and the cabinet fits either the D1 or D2 version of the driver. Kicker publishes no outer frame dimension for the L7X, so the frame OD used here, 12.5625 inches, is estimated from the published cutout. This cabinet's shipping weight is estimated from its shell rather than measured on the dock. Scott's Q2 catalog sheet lists two different dual-twelve forms; the wider, shallower form actually on the store is the one this alignment is built to. Audio Intensity and Proline X are not affiliated with Kicker.\u003c\/p\u003e\n  \u003cp\u003eThis cabinet is 6.00 cubic feet net, with a slot port of 91.0 square inches tuned to 31.0 Hz; the port stays under the chuff threshold up to 707 W; above that the air at the mouth moves faster than the 17 metres per second where a slot starts to chuff.\u003c\/p\u003e\n  \u003cp\u003eSet a 24 Hz subsonic filter, 24 dB per octave. Below tuning the vent stops loading the cone; with the filter in place the cone reaches 16.3 mm of its 31.2 mm at 3000 W.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Standard - Hex and Flag","offer_id":43278391378009,"sku":"Pro12D-P KIK HEX","price":1249.99,"currency_code":"USD","in_stock":true},{"title":"None - Carpet Only","offer_id":43278391345241,"sku":"Pro12D-P KIK NA","price":1229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-dual-kicker-solo-x-12-subwoofersubwoofer-enclosuresproline-x-9144715.webp?v=1779355146"},{"product_id":"performance-optimized-dual-sealed-12-enclosure-image-dynamics-idq-12","title":"Performance Optimized Dual Sealed 12\" Enclosure | Image Dynamics IDQ 12","description":"\u003cdiv class=\"po-desc\"\u003e\n\u003cstyle\u003e\n  .po-desc {\n    --po-dark: #0f172a;\n    --po-deep: #0e7490;\n    --po-accent: #06b6d4;\n    --po-tint: #f0f9ff;\n    --po-line: #cfe8f3;\n    --po-text: #1a2233;\n    --po-muted: #4a5568;\n    max-width: 1200px;\n    margin: 0 auto;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: var(--po-text) !important;\n    line-height: 1.6;\n  }\n  .po-desc * { box-sizing: border-box; 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}\n  .po-section h3 {\n    font-size: 25px;\n    margin: 0 0 18px;\n    color: var(--po-deep) !important;\n    font-weight: 800;\n  }\n  .po-section p {\n    font-size: 16.5px;\n    color: var(--po-text) !important;\n    margin: 0 0 16px;\n  }\n  .po-section p:last-child { margin-bottom: 0; }\n  .po-highlight {\n    border-left: 4px solid var(--po-accent);\n    background: #ecfbff;\n    padding: 20px 24px;\n    border-radius: 0 10px 10px 0;\n    margin: 22px 0 0;\n  }\n  .po-highlight p { margin: 0; font-size: 16px; }\n  .po-grid {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 20px;\n    margin-top: 24px;\n  }\n  @media (max-width: 720px) { .po-grid { grid-template-columns: 1fr; } }\n  .po-card {\n    background: #ffffff;\n    border: 1px solid var(--po-line);\n    border-radius: 12px;\n    padding: 26px;\n  }\n  .po-card-label {\n    display: inline-block;\n    font-size: 11.5px;\n    letter-spacing: 1.5px;\n    text-transform: uppercase;\n    color: var(--po-accent) !important;\n    font-weight: 700;\n    margin-bottom: 10px;\n  }\n  .po-card h4 {\n    font-size: 18.5px;\n    margin: 0 0 12px;\n    color: var(--po-deep) !important;\n    font-weight: 700;\n  }\n  .po-card-divider {\n    width: 42px;\n    height: 3px;\n    background: var(--po-accent);\n    border-radius: 2px;\n    margin: 0 0 14px;\n  }\n  .po-card p { font-size: 15.5px; color: var(--po-muted) !important; margin: 0; }\n  .po-stats {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 16px;\n    margin-top: 22px;\n  }\n  @media (max-width: 720px) { .po-stats { grid-template-columns: 1fr; } }\n  .po-stat-cell {\n    background: linear-gradient(160deg, #134e63, var(--po-deep));\n    color: #fff !important;\n    border-radius: 12px;\n    padding: 24px 20px;\n    text-align: center;\n  }\n  .po-stat-cell .num {\n    display: block;\n    font-size: 30px;\n    font-weight: 800;\n    line-height: 1.1;\n    color: #fff !important;\n  }\n  .po-stat-cell .unit {\n    display: block;\n    font-size: 13px;\n    letter-spacing: 1px;\n    text-transform: uppercase;\n    color: #a5e3f7 !important;\n    margin-top: 8px;\n  }\n  .po-cta {\n    background: linear-gradient(135deg, var(--po-deep) 0%, #134e63 50%, var(--po-dark) 100%);\n    color: #fff !important;\n    padding: 44px;\n    border-radius: 14px;\n    text-align: center;\n    margin-top: 26px;\n  }\n  .po-cta h3 { color: #fff !important; font-size: 24px; margin: 0 0 12px; font-weight: 800; }\n  .po-cta p { color: #d6f0fa !important; font-size: 16.5px; margin: 0 auto; max-width: 680px; }\n\u003c\/style\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cspan class=\"po-eyebrow\"\u003eProline X Performance Optimized Series\u003c\/span\u003e\n    \u003ch2\u003eDual Sealed 12\" Enclosure | Image Dynamics IDQ12 V4\u003c\/h2\u003e\n    \u003cp\u003eTwo IDQ12 V4 subwoofers. One precision airspace. This driver-specific sealed enclosure is CNC-cut around the IDQ12's published parameters, so a pair of the most musical 12s in car audio gets exactly the box they were engineered for.\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003eDriver-Specific\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eCNC-Cut in Tennessee\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003ePre-Wired\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1-Year Warranty\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch3\u003eEngineered Around the IDQ12 V4\u003c\/h3\u003e\n    \u003cp\u003eThe Image Dynamics IDQ12 V4 is a sealed-box subwoofer by design, with an EBP of 40 that tells you exactly where it belongs. This enclosure gives a pair of them the airspace Image Dynamics' parameters call for: approximately 2.8 cubic feet of net internal volume in a shared common chamber, roughly 1.4 cubic feet per driver after displacement. That sits in the extended range of the IDQ12's sealed window, trading a touch of box punch for deeper extension while preserving the transient accuracy that wins sound quality lanes.\u003c\/p\u003e\n    \u003cp\u003eThe baffle is cut for the IDQ12 V4's 10.87 inch cutout on both positions, and the 15 inch depth swallows the driver's 5.91 inch mounting depth with room to breathe. Polyfill comes pre-installed, so the enclosure performs as modeled the day it arrives.\u003c\/p\u003e\n    \u003cdiv class=\"po-stats\"\u003e\n      \u003cdiv class=\"po-stat-cell\"\u003e\n\u003cspan class=\"num\"\u003e2.8 ft³\u003c\/span\u003e\u003cspan class=\"unit\"\u003eNet Volume, Common Chamber\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"po-stat-cell\"\u003e\n\u003cspan class=\"num\"\u003e30x15x15\u003c\/span\u003e\u003cspan class=\"unit\"\u003eExternal Inches (WxHxD)\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"po-stat-cell\"\u003e\n\u003cspan class=\"num\"\u003e1000W\u003c\/span\u003e\u003cspan class=\"unit\"\u003eSystem RMS (2 x 500W)\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section tint\"\u003e\n    \u003ch3\u003ePerformance Optimized Construction\u003c\/h3\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut from Langboard Elite MDF on our ShopSabre routers in Tullahoma, Tennessee, with precision V-groove and dado joinery for panel alignment and long-term sealed integrity. The baffle carries 8\/32 threaded inserts matched to the IDQ12 V4's published mounting pattern, with stainless steel machine screws included, so the drivers bolt down with real hardware instead of wood screws.\u003c\/p\u003e\n    \u003cp\u003eConnections run through the Proline X ABS and carbon fiber composite terminal cup with stainless hardware and copper ring terminals, pre-wired with 12-gauge OFC to both driver positions. Drop the subs in, land two wires at the cup, and the install is done.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003eThis is the same driver-specific approach as our Professional Series: airspace, cutouts, and hardware locked to one driver, the Image Dynamics IDQ12 V4, rather than averaged across a class of 12s.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch3\u003eFinish It Your Way\u003c\/h3\u003e\n    \u003cp\u003eThe enclosure comes wrapped in Dark Gray Trunkliner as standard, with Plush Black carpet available as an upgrade. The front baffle accepts a colored acrylic insert in Black, Blue, Red, or White to match the build, or can be ordered without the insert for a clean, blacked-out face at a reduced price.\u003c\/p\u003e\n    \u003cp\u003eOrder the box on its own if you already have your drivers, or bundle it with a matched pair of IDQ12 V4 subwoofers in Dual 2-ohm or Dual 4-ohm, and we ship everything together. A pair of Dual 2-ohm drivers wires to a 2-ohm final load; a pair of Dual 4-ohm drivers wires to 1 ohm or 4 ohms.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-grid\"\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eAirspace\u003c\/span\u003e\n      \u003ch4\u003eDriver-Matched Volume\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eApproximately 1.4 cubic feet per driver in a common chamber, set against the IDQ12 V4's published sealed parameters.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eJoinery\u003c\/span\u003e\n      \u003ch4\u003eV-Groove + Dado Construction\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eCNC-cut Langboard Elite MDF with precision joinery for rigid panels and an airtight sealed cabinet that stays that way.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eHardware\u003c\/span\u003e\n      \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eMatched to the IDQ12 V4 mounting pattern with stainless machine screws included. Real fasteners, repeatable torque.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eWiring\u003c\/span\u003e\n      \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in 12-gauge OFC to both positions.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eStyle\u003c\/span\u003e\n      \u003ch4\u003eAcrylic Insert Options\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eBlack, Blue, Red, or White front acrylic to match the build, or skip the insert for a blacked-out baffle.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eBundles\u003c\/span\u003e\n      \u003ch4\u003eBox Only or Loaded\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eOrder the enclosure alone or bundled with a matched pair of IDQ12 V4 drivers in Dual 2-ohm or Dual 4-ohm.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch3\u003eThe Box Two IDQ12s Deserve\u003c\/h3\u003e\n    \u003cp\u003ePrecision airspace, real hardware, and pre-wired connections, built around one driver and cut on CNC in Tennessee. Pair it with 1000 clean watts and let a dual IDQ12 V4 sealed stage do what it was engineered to do.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Plush Black \/ Black \/ Box Only","offer_id":43382076997721,"sku":"PO ID 12D-S IDQ BB none","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Black \/ Add 2 Dual 2ohm IDQ 12\"","offer_id":43382077030489,"sku":"PO ID 12D-S IDQ BB 2ohm","price":949.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Black \/ Add 2 Dual 4ohm IDQ 12\"","offer_id":43382077063257,"sku":"PO ID 12D-S IDQ BB 4ohm","price":949.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue \/ Box Only","offer_id":43382077096025,"sku":"PO ID 12D-S IDQ BBL none","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue \/ Add 2 Dual 2ohm IDQ 12\"","offer_id":43382077128793,"sku":"PO ID 12D-S IDQ BBL 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background: #ecfbff;\n    padding: 20px 24px;\n    border-radius: 0 10px 10px 0;\n    margin: 22px 0 0;\n  }\n  .po-highlight p { margin: 0; font-size: 16px; }\n  .po-grid {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 20px;\n    margin-top: 24px;\n  }\n  @media (max-width: 720px) { .po-grid { grid-template-columns: 1fr; } }\n  .po-card {\n    background: #ffffff;\n    border: 1px solid var(--po-line);\n    border-radius: 12px;\n    padding: 26px;\n  }\n  .po-card-label {\n    display: inline-block;\n    font-size: 11.5px;\n    letter-spacing: 1.5px;\n    text-transform: uppercase;\n    color: var(--po-accent) !important;\n    font-weight: 700;\n    margin-bottom: 10px;\n  }\n  .po-card h4 {\n    font-size: 18.5px;\n    margin: 0 0 12px;\n    color: var(--po-deep) !important;\n    font-weight: 700;\n  }\n  .po-card-divider {\n    width: 42px;\n    height: 3px;\n    background: var(--po-accent);\n    border-radius: 2px;\n    margin: 0 0 14px;\n  }\n  .po-card p { font-size: 15.5px; color: var(--po-muted) !important; margin: 0; }\n  .po-stats {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 16px;\n    margin-top: 22px;\n  }\n  @media (max-width: 720px) { .po-stats { grid-template-columns: 1fr; } }\n  .po-stat-cell {\n    background: linear-gradient(160deg, #134e63, var(--po-deep));\n    color: #fff !important;\n    border-radius: 12px;\n    padding: 24px 20px;\n    text-align: center;\n  }\n  .po-stat-cell .num {\n    display: block;\n    font-size: 30px;\n    font-weight: 800;\n    line-height: 1.1;\n    color: #fff !important;\n  }\n  .po-stat-cell .unit {\n    display: block;\n    font-size: 13px;\n    letter-spacing: 1px;\n    text-transform: uppercase;\n    color: #a5e3f7 !important;\n    margin-top: 8px;\n  }\n  .po-cta {\n    background: linear-gradient(135deg, var(--po-deep) 0%, #134e63 50%, var(--po-dark) 100%);\n    color: #fff !important;\n    padding: 44px;\n    border-radius: 14px;\n    text-align: center;\n    margin-top: 26px;\n  }\n  .po-cta h3 { color: #fff !important; font-size: 24px; margin: 0 0 12px; font-weight: 800; }\n  .po-cta p { color: #d6f0fa !important; font-size: 16.5px; margin: 0 auto; max-width: 680px; }\n\u003c\/style\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cspan class=\"po-eyebrow\"\u003eProline X Performance Optimized Series\u003c\/span\u003e\n    \u003ch2\u003eSealed 12\" Enclosure | Image Dynamics IDQ12 V4\u003c\/h2\u003e\n    \u003cp\u003eOne driver, one airspace, zero compromise. This driver-specific sealed enclosure is CNC-cut around the Image Dynamics IDQ12 V4's published parameters, giving one of the most musical 12s in car audio exactly the box it was engineered for.\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003eDriver-Specific\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eCNC-Cut in Tennessee\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003ePre-Wired\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1-Year Warranty\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch3\u003eEngineered Around the IDQ12 V4\u003c\/h3\u003e\n    \u003cp\u003eThe Image Dynamics IDQ12 V4 is a sealed-box subwoofer by design, with an EBP of 40 that tells you exactly where it belongs. This enclosure gives it 1.4 cubic feet of net internal volume, the extended portion of the IDQ12's sealed window. Compared to the tighter 1.0 cubic foot alignment, that buys deeper bass extension while preserving the transient accuracy and tonal neutrality that built the IDQ Series' sound quality reputation.\u003c\/p\u003e\n    \u003cp\u003eThe baffle is cut for the IDQ12 V4's 10.87 inch cutout, the 10.5 inch cabinet depth clears the driver's 5.91 inch mounting depth comfortably, and polyfill comes pre-installed so the enclosure performs as modeled the day it arrives.\u003c\/p\u003e\n    \u003cdiv class=\"po-stats\"\u003e\n      \u003cdiv class=\"po-stat-cell\"\u003e\n\u003cspan class=\"num\"\u003e1.4 ft³\u003c\/span\u003e\u003cspan class=\"unit\"\u003eNet Internal Volume\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"po-stat-cell\"\u003e\n\u003cspan class=\"num\"\u003e24x15x10.5\u003c\/span\u003e\u003cspan class=\"unit\"\u003eExternal Inches (WxHxD)\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"po-stat-cell\"\u003e\n\u003cspan class=\"num\"\u003e500W\u003c\/span\u003e\u003cspan class=\"unit\"\u003eRMS (IDQ12 V4)\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section tint\"\u003e\n    \u003ch3\u003ePerformance Optimized Construction\u003c\/h3\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut from Langboard Elite MDF on our ShopSabre routers in Tullahoma, Tennessee, with precision V-groove and dado joinery for panel alignment and long-term sealed integrity. The baffle carries 8\/32 threaded inserts matched to the IDQ12 V4's published mounting pattern, with stainless steel machine screws included, so the driver bolts down with real hardware instead of wood screws.\u003c\/p\u003e\n    \u003cp\u003eConnections run through the Proline X ABS and carbon fiber composite terminal cup with stainless hardware and copper ring terminals, pre-wired with 12-gauge OFC to the driver position. Drop the sub in, land two wires at the cup, and the install is done.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003eThis is the same driver-specific approach as our Professional Series: airspace, cutout, and hardware locked to one driver, the Image Dynamics IDQ12 V4, rather than averaged across a class of 12s.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch3\u003eFinish It Your Way\u003c\/h3\u003e\n    \u003cp\u003eThe enclosure comes wrapped in Dark Gray Trunkliner as standard, with Plush Black carpet available as an upgrade. The front baffle accepts a colored acrylic insert in Black, Blue, Red, or White to match the build, or can be ordered without the insert for a clean, blacked-out face at a reduced price.\u003c\/p\u003e\n    \u003cp\u003eOrder the box on its own if you already have your driver, or bundle it with an IDQ12 V4 in Dual 2-ohm or Dual 4-ohm, and we ship everything together. A Dual 2-ohm driver wires to 1 ohm or 4 ohms; a Dual 4-ohm driver wires to 2 ohms or 8 ohms.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-grid\"\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eAirspace\u003c\/span\u003e\n      \u003ch4\u003e1.4 Cubic Feet, Driver-Matched\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe extended end of the IDQ12 V4's sealed window, set against Image Dynamics' published parameters for deeper extension.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eJoinery\u003c\/span\u003e\n      \u003ch4\u003eV-Groove + Dado Construction\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eCNC-cut Langboard Elite MDF with precision joinery for rigid panels and an airtight sealed cabinet that stays that way.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eHardware\u003c\/span\u003e\n      \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eMatched to the IDQ12 V4 mounting pattern with stainless machine screws included. Real fasteners, repeatable torque.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eWiring\u003c\/span\u003e\n      \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in 12-gauge OFC.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eStyle\u003c\/span\u003e\n      \u003ch4\u003eAcrylic Insert Options\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eBlack, Blue, Red, or White front acrylic to match the build, or skip the insert for a blacked-out baffle.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"po-card\"\u003e\n      \u003cspan class=\"po-card-label\"\u003eBundles\u003c\/span\u003e\n      \u003ch4\u003eBox Only or Loaded\u003c\/h4\u003e\n      \u003cdiv class=\"po-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eOrder the enclosure alone or bundled with an IDQ12 V4 driver in Dual 2-ohm or Dual 4-ohm.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch3\u003eThe Box the IDQ12 Deserves\u003c\/h3\u003e\n    \u003cp\u003ePrecision airspace, real hardware, and pre-wired connections, built around one driver and cut on CNC in Tennessee. Give the IDQ12 V4 500 clean watts and the right 1.4 cubic feet, and let it do what it was engineered to do.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Plush Black \/ Black \/ Box Only","offer_id":43382222192729,"sku":"PO ID 12-S IDQ BB none","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Black \/ Add a Dual 2ohm IDQ 12\"","offer_id":43382222225497,"sku":"PO ID 12-S IDQ BB 2ohm","price":579.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Black \/ Add a Dual 4ohm IDQ 12\"","offer_id":43382222258265,"sku":"PO ID 12-S IDQ BB 4ohm","price":579.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue \/ Box Only","offer_id":43382222291033,"sku":"PO ID 12-S IDQ BBL none","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue \/ Add a Dual 2ohm IDQ 12\"","offer_id":43382222323801,"sku":"PO ID 12-S IDQ BBL 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Trunkliner \/ None \/ Add a Dual 2ohm IDQ 12\"","offer_id":43382223110233,"sku":"PO ID 12-S IDQ G 2ohm","price":539.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ None \/ Add a Dual 4ohm IDQ 12\"","offer_id":43382223143001,"sku":"PO ID 12-S IDQ G 4ohm","price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/performance-optimized-sealed-10-enclosure-image-dynamics-idq-10subwoofer-enclosuresproline-x-2511067.webp?v=1779355148"},{"product_id":"proline-x-micro-series-12-sealed-enclosure-fits-arc-audio-sw12","title":"Proline X M12-S ARC SW | Single 12\" Sealed Subwoofer Enclosure | Built for Arc Audio SW12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap *{box-sizing:border-box;}\n.pl-hero{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:54px 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h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Micro Series 12\" Sealed Enclosure\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Arc Audio SW12\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e0.80 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Arc Audio SW12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.80\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.972-0.982\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e41.3-41.5 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e2.625 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eSW12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Arc Audio SW12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the SW12's published sealed target, with clearance cut for its 2.625 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe SW12 carries a published \u003cstrong\u003eFs of 33 Hz, Qts of 0.616 and Vas of 33.73 litres\u003c\/strong\u003e, and an EBP of 46, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.80 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.8 cu ft. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Micro Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEvery layer is a precision cut ring and the stacked layers do the joining themselves, so there is no butt joint or dado to flex or leak. Dowel reinforcement runs between layers as tension hardware only.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own SW12, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in. Loaded builds are available in Dual 2-Ohm (D2) or Dual 4-Ohm (D4), selectable by variant.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Arc Audio SW12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eArc Audio SW12 D2  |  Qts 0.616  |  Fs 33 Hz  |  Vas 33.73 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.80 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.972\u003c\/td\u003e\n\u003ctd\u003e52.1 Hz\u003c\/td\u003e\n\u003ctd\u003e41.5 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eArc Audio SW12 Frequency Response | Sealed, 0.80 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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sans-serif\"\u003e-6dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"121.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"66.8\" y2=\"66.8\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"70.8\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e0dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"16.0\" y2=\"16.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"20.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#8b5cf6\" stroke-width=\"1.4\" stroke-dasharray=\"4 3\" opacity=\"0.85\"\u003e\u003c\/line\u003e\n\u003ctext x=\"660\" y=\"112.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#a78bfa\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42.0\" x2=\"42.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"42.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e20Hz\u003c\/text\u003e\n\u003cline x1=\"135.1\" x2=\"135.1\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"135.1\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e30Hz\u003c\/text\u003e\n\u003cline x1=\"252.5\" x2=\"252.5\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"252.5\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e50Hz\u003c\/text\u003e\n\u003cline x1=\"411.7\" x2=\"411.7\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"411.7\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e100Hz\u003c\/text\u003e\n\u003cline x1=\"570.9\" x2=\"570.9\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"570.9\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e200Hz\u003c\/text\u003e\n\u003cline x1=\"664.0\" x2=\"664.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"664.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e300Hz\u003c\/text\u003e\n\u003crect x=\"42\" y=\"16\" width=\"622\" height=\"254\" fill=\"none\" stroke=\"#334155\" 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583.1,62.7 585.2,62.8 587.3,62.9 589.4,63.0 591.4,63.0 593.5,63.1 595.6,63.1 597.7,63.2 599.7,63.3 601.8,63.3 603.9,63.4 605.9,63.5 608.0,63.5 610.1,63.6 612.2,63.6 614.2,63.7 616.3,63.7 618.4,63.8 620.5,63.8 622.5,63.9 624.6,63.9 626.7,64.0 628.8,64.0 630.8,64.1 632.9,64.1 635.0,64.2 637.0,64.2 639.1,64.3 641.2,64.3 643.3,64.4 645.3,64.4 647.4,64.4 649.5,64.5 651.6,64.5 653.6,64.6 655.7,64.6 657.8,64.6 659.9,64.7 661.9,64.7 664.0,64.8\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.80 cu ft (Qtc 0.972)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e This alignment is calculated from the published T\/S for the SW12 in the D2 parallel set. The D4 variant carries slightly different Qts and Vas figures and will land a marginally different sealed alignment. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the SW12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Enclosure Only","offer_id":43453441900633,"sku":"M12-S ARC SW","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Yes Add an Arc Audio SW12 D4","offer_id":43453441933401,"sku":"M12-S ARC SW D4","price":899.99,"currency_code":"USD","in_stock":true},{"title":"Yes Add an Arc Audio SW12 D2","offer_id":43453441966169,"sku":"M12-S ARC SW D2","price":899.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-12-sealed-enclosure-fits-arc-audio-sw12subwoofer-enclosuresproline-x-1837153.png?v=1782030248"},{"product_id":"proline-x-p12-s-w-single-12-sealed-wedge-subwoofer-enclosure-loaded-with-arc-audio-x2v2-12","title":"Proline X P12-S W | Single 12\" Sealed Wedge Subwoofer Enclosure | Loaded with Arc Audio X2V2 12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap *{box-sizing:border-box;}\n.pl-hero{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:54px 36px;text-align:center;color:#fff;}\n.pl-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 12px;color:#fff;}\n.pl-hero p{font-size:1.1em;font-weight:300;opacity:.93;margin:0 0 22px;color:#cbd5e1;}\n.pl-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;}\n.pl-badge{background:rgba(139,92,246,.18);border:1px solid #8b5cf6;color:#c4b5fd;padding:7px 16px;border-radius:18px;font-size:.8em;font-weight:600;letter-spacing:.4px;}\n.pl-stats{display:flex;flex-wrap:wrap;background:#0f172a;}\n.pl-stat{flex:1 1 200px;text-align:center;padding:26px 16px;border-right:1px solid #1e293b;border-bottom:1px solid #1e293b;}\n.pl-stat 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h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X P12-S W Sealed Wedge, Loaded\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Arc Audio X2V2 12\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e1.00 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Arc Audio X2V2 12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.00\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.918\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e41 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e6.75 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eX2V2 12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Arc Audio X2V2 12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the X2V2 12's published sealed target, with the baffle bored to the X2V2 12's 11.11 in cutout, and clearance cut for its 6.75 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe X2V2 12 carries a published \u003cstrong\u003eFs of 25.57 Hz, Qts of 0.471 and Vas of 79.36 litres\u003c\/strong\u003e, and an EBP of 49, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e1.00 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.9 to 1.55 cu ft (optimal 1.15). The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Performance Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is cut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nThe panels are V-grooved and folded on the seam, then dadoed where the internal bracing lands, so every joint is a mechanical lock rather than a glue line under load.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own X2V2 12, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Arc Audio X2V2 12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eArc Audio X2V2 12 D2  |  Qts 0.471  |  Fs 25.57 Hz  |  Vas 79.36 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e1.00 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.918\u003c\/td\u003e\n\u003ctd\u003e49.9 Hz\u003c\/td\u003e\n\u003ctd\u003e40.9 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eArc Audio X2V2 12 Frequency Response | Sealed, 1.00 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the D2 set. The D4 X2V2 12 carries Qts 0.543 and Vas 82.65 litres, which in this same 1.00 cubic foot volume lands at \u003cstrong\u003eQtc 1.075, Fc 50.6 Hz and F3 38.6 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 1 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the X2V2 12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dual 4ohm \/ Grey","offer_id":43486449401945,"sku":"P12-S W ARC X2V2 D4 G","price":379.99,"currency_code":"USD","in_stock":true},{"title":"Dual 4ohm \/ Plush Black","offer_id":43486449434713,"sku":"P12-S W ARC X2V2 D4 B","price":379.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2 ohm \/ Grey","offer_id":43486449467481,"sku":"P12-S W ARC X2V2 D2 G","price":379.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2 ohm \/ Plush Black","offer_id":43486449500249,"sku":"P12-S W ARC X2V2 D2 B","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/arc-audio-x2-12-subwoofer-matching-proline-x-enclosure-bundle-box-50-offsubwoofer-enclosuresproline-x-2134823.png?v=1782929831"},{"product_id":"proline-x-micro-series-12-sealed-enclosure-built-for-arc-audio-a12","title":"Proline X M12-S ARC A | Single 12\" Sealed Subwoofer Enclosure | Built for Arc Audio A12","description":"\u003c!-- ============================================================\n     PROLINE X MICRO SERIES: Arc Audio A12\n     SEALED 12\" ENCLOSURE ONLY\n     SKU: M12-S ARC A12\n     External: 28.5\" x 14.75\" x 7.5\"\n     Net Volume: 1.0 cu ft (Arc Audio's published optimum)\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .ms-wrap * { box-sizing: border-box; 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gap: 24px; }\n  }\n  .ms-hero-badge {\n    display: inline-block;\n    background: transparent;\n    border: 2px solid #16a34a;\n    color: #86efac;\n    font-size: 0.75em;\n    font-weight: 700;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    padding: 4px 14px;\n    border-radius: 20px;\n    margin-right: 8px;\n    vertical-align: middle;\n  }\n  .ms-hero-revision {\n    display: inline-block;\n    background: #16a34a;\n    border: 2px solid #16a34a;\n    color: #ffffff;\n    font-size: 0.75em;\n    font-weight: 700;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    padding: 4px 14px;\n    border-radius: 20px;\n    vertical-align: middle;\n  }\n  .ms-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n  .ms-hero p { color: #cbd5e1; font-size: 1em; margin: 0 0 0 0; line-height: 1.7; }\n  .ms-hero-stats { display: flex; gap: 28px; flex-wrap: wrap; justify-content: center; position: relative; z-index: 1; 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}\n  .ms-highlight h3 + h3 { margin-top: 18px; }\n  .ms-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n  .ms-highlight p:last-child { margin-bottom: 0; }\n\n  .ms-alert {\n    background: #dcfce7;\n    border: 1px solid #16a34a;\n    border-radius: 6px;\n    padding: 16px 36px;\n    margin: 20px 0;\n    font-size: 0.93em;\n    color: #166534;\n  }\n  .ms-alert strong { color: #14532d; }\n\n  .ms-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 24px 0; }\n  @media (max-width: 600px) { .ms-card-grid { grid-template-columns: 1fr; } }\n  .ms-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 3px solid #16a34a; border-radius: 6px; padding: 22px; }\n  .ms-card-label { display: inline-block; background: #16a34a; color: #ffffff; font-size: 0.68em; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 3px 10px; border-radius: 3px; margin-bottom: 10px; }\n  .ms-card h4 { color: #14532d; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ms-card-divider { height: 2px; background: #16a34a; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ms-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ms-card p strong { color: #14532d; }\n\n  .ms-warranty {\n    background: #0f172a;\n    border-left: 5px solid #16a34a;\n    border-radius: 0 6px 6px 0;\n    padding: 20px 36px;\n    margin: 28px 0;\n    display: flex;\n    align-items: center;\n    gap: 20px;\n  }\n  .ms-warranty-badge { background: #16a34a; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ms-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ms-warranty strong { color: #ffffff; }\n\n  .ms-fitment { list-style: none; margin: 14px 0 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }\n  @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n  .ms-fitment li { font-size: 0.93em; color: #334155; padding: 8px 12px; background: #f0fdf4; border-left: 3px solid #16a34a; border-radius: 0 4px 4px 0; }\n  .ms-divider { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }\n  .ms-langboard { font-weight: 700; color: #14532d; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ms-wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv class=\"ms-hero\"\u003e\n    \u003cdiv class=\"ms-hero-badges\"\u003e\n      \u003cspan class=\"ms-hero-badge\"\u003eMicro Series | Arc Audio A12 | Enclosure Only\u003c\/span\u003e\u003cspan class=\"ms-hero-revision\"\u003eDesign Revision 5.20.26\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ms-hero-middle\"\u003e\n      \u003cdiv class=\"ms-hero-text\"\u003e\n        \u003ch2\u003eBuilt for the Arc Audio A12.\u003cbr\u003eArc's Published 1.0 cu ft Optimum in 7.5 Inches of Depth.\u003c\/h2\u003e\n        \u003cp\u003eThe Arc Audio A12 delivers 300 watts RMS from a 3.85-inch mounting depth with Arc's progressive-taper poly-injected pulp cone, 3-inch voice coil, and Nomex-blend spider. Arc Audio publishes a sealed enclosure range of 0.85 to 1.25 cubic feet, with 1.0 cubic foot identified as the optimum. The Proline X Micro Series enclosure delivers exactly that airspace in a double-layer stack-fab build at 7.5 inches of total depth.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-hero-image\"\u003e\n        \u003cimg src=\"https:\/\/audiointensity.com\/cdn\/shop\/files\/proline-x-micro-series-12-sealed-enclosure-fits-arc-audio-sw12subwoofer-enclosuresproline-x-8161252.png?v=1782030248\u0026amp;width=800\" alt=\"Proline X Micro Series 12-inch sealed enclosure for Arc Audio A12\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ms-hero-stats\"\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e1.0\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCu Ft Net Volume\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e7.5\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eTotal Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e3.85\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eDriver Mount Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e300W\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eDriver RMS Rating\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ENCLOSURE ONLY NOTICE --\u003e\n  \u003cdiv class=\"ms-alert\"\u003e\n    \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The Arc Audio A12 subwoofer is not included. This enclosure is designed for customers who already own or are separately purchasing the A12 in either the D2 or D4 impedance configuration.\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 1: Volume Math --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e1.0 cu ft: Arc Audio's Published Optimum\u003c\/h3\u003e\n    \u003cp\u003eArc Audio publishes a sealed enclosure range of 0.85 to 1.25 cubic feet for the A12, with 1.0 cubic foot identified as the optimum. This enclosure delivers exactly 1.0 cubic foot of net acoustic airspace. At this volume the A12 produces the balanced tonal signature Arc Audio designed the A-Series for: strong upper-bass presence, moderate deep-bass extension, and the kind of daily-driver character that sounds good at real-world listening levels without requiring DSP correction.\u003c\/p\u003e\n    \u003cp\u003eThe A12 uses a 3-inch voice coil (versus the A10's 2.5-inch) for higher thermal capacity, and its larger cone area produces roughly 3 dB more low-frequency output than the A10 in equivalent enclosure volumes. This enclosure is built to deliver the exact volume Arc engineered the A12 to perform in.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 1B: Back-of-napkin math explanation --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e\"If I Do the Math on the External Dimensions, the Volume Looks Too Big\"\u003c\/h3\u003e\n    \u003cp\u003eThis is the most common question we get on every Micro Series enclosure. The math customers run looks like this: external dimensions of 28.5\" × 14.75\" × 7.5\" subtract 3\/4\" walls on all six sides, leaving an assumed internal cavity of 27\" × 13.25\" × 6\". That works out to 2,146 cubic inches, or roughly 1.24 cubic feet. The listed net volume is 1.0 cubic foot, a difference of nearly 0.24 cu ft, which looks like the enclosure must be oversized by about 24%.\u003c\/p\u003e\n    \u003cp\u003eThat math assumes four things that are not true on a Proline X stack-fab enclosure:\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003e1. The walls are not 3\/4\" on every side.\u003c\/strong\u003e The front baffle is a double-layer stack-fab build at 1.5 inches thick, twice the assumed wall thickness. That alone removes more internal depth than a 3\/4\" calculation accounts for.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003e2. The enclosure is not a perfect rectangle.\u003c\/strong\u003e Viewed from above, all four corners are radiused at 3 inches. This is a deliberate design choice for two reasons: the rounded corners break up the parallel-wall geometry that creates internal standing waves, and they produce a finished shape that fits cleanly against vehicle interior surfaces without sharp corners catching on trim or upholstery. The 3\" radii remove measurable internal volume that an external-minus-walls calculation assumes is open airspace.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003e3. The area directly behind the driver's magnet is precision-milled.\u003c\/strong\u003e This is a deliberate engineering step that serves two purposes. First, it allows us to make fine volume adjustments to hit the target airspace exactly. Second, and more importantly, it increases the open area immediately behind the driver's rear vent. The A12's pole vent is part of the driver's voice coil cooling system. Air flows through the vent during cone movement, carrying heat away from the voice coil former. If the area immediately behind the vent is restricted, backpressure builds against that airflow and voice coil cooling is compromised. Most enclosure manufacturers do not understand this airflow dynamic, and even fewer engineer around it. We do.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003e4. The driver itself displaces internal airspace once installed.\u003c\/strong\u003e The basket, motor, and pole structure occupy meaningful volume inside the chamber. This is not subtracted from a back-of-napkin external calculation, but it is subtracted from what the driver acoustically loads into.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eHow we actually calculate volume.\u003c\/strong\u003e Our engineering approach is built on precision, and it is different from how most enclosure manufacturers calculate airspace and different from the math any customer can do from external dimensions. A Proline X stack-fab enclosure is built from individually CNC-cut layers, each with its own machined opening. We calculate the precise internal volume of every layer's opening, then sum those layer-by-layer volumes to arrive at the actual net airspace inside the assembled enclosure. No one else in this industry calculates net volume this way. It is the only method that produces a genuinely accurate account of the airspace a driver sees once the enclosure is built. The 1.0 cubic foot figure is exact, not approximate.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 2: Driver character --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eThe A12 in a 1.0 cu ft Sealed Box: What It Sounds Like\u003c\/h3\u003e\n    \u003cp\u003eThe Arc Audio A12 is a daily-driver shallow subwoofer built on the same A-Series platform as the A10, scaled up to a 12-inch cone with a 3-inch voice coil. It is not marketed as an SQ competition driver, and it is not engineered to compete in that category. In the 1.0 cubic foot sealed target, the A12 produces the tonal balance most listeners recognize as \"good bass\" in a daily driver: strong output in the upper-bass range where most bass energy in music lives, moderate extension into the low bass, and no need for DSP to produce a pleasing in-cabin response.\u003c\/p\u003e\n    \u003cp\u003eThe 12-inch cone gives the A12 about 44% more cone area than the A10, which translates to roughly 3 dB more low-frequency output in equivalent enclosure volumes. The 3-inch voice coil provides higher thermal capacity than the A10's 2.5-inch coil, letting the A12 run its 300 watts RMS reliably in daily-driver use. Running clean unclipped power in the 250 to 300 watt RMS range in this enclosure, the A12 delivers exactly the daily-driver experience Arc Audio designed it for.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 3: Construction --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003e1.5\" Double-Layer Baffle. Stack Fab. Dowel Reinforced.\u003c\/h3\u003e\n    \u003cp\u003eThe front baffle is a double-layer stack-fab build: two CNC-cut Langboard Elite MDF panels bonded to 1.5 inches total. The stack-fab assembly is further reinforced with dowels throughout, adding between-layer tension reinforcement that locks the panel stack against shear movement under sustained operation. At 300 watts RMS the mechanical load is moderate, but the construction standard is the same across the entire Micro Series lineup because the goal is to build an enclosure that holds its acoustic seal for the life of the vehicle, not just the first year.\u003c\/p\u003e\n    \u003cp\u003eThe stack-fab construction itself does the joining: every CNC-cut layer interlocks with the layers above and below it, eliminating single-layer butt joints entirely. The 7.5-inch total depth gives the enclosure side walls adequate geometric rigidity for the load, and Langboard Elite MDF at 200 psi internal bond and 410,000 psi MOE is the correct panel spec for a driver in this power class.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHY CARDS --\u003e\n  \u003cdiv class=\"ms-card-grid\"\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eVolume\u003c\/span\u003e\n      \u003ch4\u003e1.0 cu ft, Exactly Arc's Published Optimum\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eArc Audio publishes \u003cstrong\u003e1.0 cu ft as the optimum sealed volume\u003c\/strong\u003e for the A12. This enclosure delivers exactly that, calculated by summing every CNC-cut layer's individual opening. Precision volume, not approximation.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eDepth\u003c\/span\u003e\n      \u003ch4\u003e7.5\" Total Enclosure, 3.85\" Driver Clearance\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe A12 requires \u003cstrong\u003e3.85\" of mounting depth\u003c\/strong\u003e. The 7.5\" total enclosure provides sufficient clearance for the driver's rear motor structure with the precision-milled magnet relief area maintaining voice coil cooling airflow.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eBaffle\u003c\/span\u003e\n      \u003ch4\u003e1.5\" Double-Layer Dowel-Reinforced Stack Fab\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eTwo bonded layers of \u003cstrong\u003eLangboard Elite 3\/4\" MDF\u003c\/strong\u003e at 1.5 inches total, reinforced with dowels throughout the stack-fab assembly. Baffle resonance at the panel level adds coloration. Double-layer construction eliminates it.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eMounting\u003c\/span\u003e\n      \u003ch4\u003e8\/32 Threaded Inserts with Machine Screws Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe baffle is fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e on the back face. Stainless machine screws are included. The A12 mounts to steel, not MDF. Consistent clamping force at all mounting points and clean reinstallation at any service interval.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eWiring\u003c\/span\u003e\n      \u003ch4\u003eProline X Terminal Cup, Pre-Wired with 12g OFC\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe \u003cstrong\u003eProline X ABS\/carbon fiber terminal cup\u003c\/strong\u003e with stainless hardware and copper ring terminals is installed and pre-wired with \u003cstrong\u003e12-gauge OFC\u003c\/strong\u003e to the driver position. Connect your amplifier run and wiring is complete.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eCutout\u003c\/span\u003e\n      \u003ch4\u003e11\" Direct-Fit A12 Geometry\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe A12 uses a \u003cstrong\u003estandard round mounting flange with an 11\" cutout\u003c\/strong\u003e. The baffle is machined to Arc Audio's specific cutout diameter. The driver seats flush, seals against its gasket, and mounts to the threaded inserts without shimming.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eConfiguration\u003c\/span\u003e\n      \u003ch4\u003eFront-Firing or Downfiring, Feet Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eRubber feet for \u003cstrong\u003edownfiring installation\u003c\/strong\u003e are included. Run it front-firing in a standard orientation or flip it downward to couple bass output with the vehicle floor. Downfiring is particularly effective in truck cab installs where floor coupling reinforces the perceived bass response.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003ePolyfill Pre-Installed\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003ePolyfill is factory-installed. It acoustically dampens internal panel reflections without artificially altering volume. \u003cstrong\u003eFactory installation\u003c\/strong\u003e ensures consistent packing density across every unit.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eReinforcement\u003c\/span\u003e\n      \u003ch4\u003eDowel-Reinforced Stack Fab: Between-Layer Tension Locking\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eDowels throughout the stack-fab assembly are added as \u003cstrong\u003ebetween-layer tension reinforcement\u003c\/strong\u003e, locking the panel stack against shear movement independent of adhesive condition. Combined with the interlocking layer geometry and adhesive bonding, three independent structural systems hold the enclosure together over its service life.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- HIGHLIGHT --\u003e\n  \u003cdiv class=\"ms-highlight\"\u003e\n    \u003ch3\u003eReady to Mount. Ready to Wire. Ready to Downfire.\u003c\/h3\u003e\n    \u003cp\u003eThe enclosure ships fully prepped. The \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with 12-gauge OFC. Connect your amplifier run and wiring is complete. The double-layer baffle uses \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws included. \u003cstrong\u003eRubber feet for downfiring\u003c\/strong\u003e are included. Polyfill is factory-installed.\u003c\/p\u003e\n    \u003ch3\u003eImpedance Options: D2 and D4\u003c\/h3\u003e\n    \u003cp\u003eThe Arc Audio A12 is available in \u003cstrong\u003eDual 2-ohm (A12-D2)\u003c\/strong\u003e and \u003cstrong\u003eDual 4-ohm (A12-D4)\u003c\/strong\u003e configurations. Wire the D2 parallel for 1 ohm or series for 4 ohms. Wire the D4 parallel for 2 ohms or series for 8 ohms. Most builds run the D2 wired parallel at 1 ohm or the D4 wired parallel at 2 ohms into an appropriately stable monoblock in the 250 to 300 watt RMS range. Confirm your amplifier's minimum stable impedance before selecting the voice coil variant.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FITMENT --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n    \u003cp\u003eAt 28.5\" × 14.75\" × 7.5\", this enclosure fits in shallow-mount install locations where a full-depth 12\" sealed box is out of the question but where the A12's larger cone area and higher output is needed:\u003c\/p\u003e\n    \u003cul class=\"ms-fitment\"\u003e\n      \u003cli\u003eBehind-seat: full-size crew cab and extended cab trucks\u003c\/li\u003e\n      \u003cli\u003eTrunk floor: full-size sedans and sport sedans\u003c\/li\u003e\n      \u003cli\u003eCargo floor: mid-size and full-size SUVs\u003c\/li\u003e\n      \u003cli\u003eUnder rear bench: full-size SUVs and vans\u003c\/li\u003e\n      \u003cli\u003eHatch floor: hatchbacks and sports cars\u003c\/li\u003e\n      \u003cli\u003eCargo area: crossovers and wagons\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WARRANTY --\u003e\n  \u003cdiv class=\"ms-warranty\"\u003e\n    \u003cdiv class=\"ms-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003e\u003cstrong\u003eAll Proline X Micro Series enclosures carry a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built and inspected in our Tullahoma, Tennessee facility before shipment. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003chr class=\"ms-divider\"\u003e\n\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eMade in Tennessee\u003c\/h3\u003e\n    \u003cp\u003eEvery Proline X Micro Series enclosure is CNC-cut and hand-assembled in Tullahoma, Tennessee on ShopSabre CNC routers. Internal volume, cutout geometry, layer-by-layer opening dimensions, baffle layer count, dowel placement, and terminal positioning are all held to spec on every unit. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e throughout: named, mill-documented, published density and bond specifications.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43488431341657,"sku":"M12-S ARC A","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-12-sealed-enclosure-fits-arc-audio-sw12subwoofer-enclosuresproline-x-8161252.png?v=1782030248"},{"product_id":"arc-audio-a12-loaded-subwoofer-enclosure","title":"Proline X M12-S ARC A | Single 12\" Sealed Subwoofer Enclosure | Loaded with Arc Audio A12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap *{box-sizing:border-box;}\n.pl-hero{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:54px 36px;text-align:center;color:#fff;}\n.pl-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 12px;color:#fff;}\n.pl-hero p{font-size:1.1em;font-weight:300;opacity:.93;margin:0 0 22px;color:#cbd5e1;}\n.pl-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;}\n.pl-badge{background:rgba(139,92,246,.18);border:1px solid #8b5cf6;color:#c4b5fd;padding:7px 16px;border-radius:18px;font-size:.8em;font-weight:600;letter-spacing:.4px;}\n.pl-stats{display:flex;flex-wrap:wrap;background:#0f172a;}\n.pl-stat{flex:1 1 200px;text-align:center;padding:26px 16px;border-right:1px solid #1e293b;border-bottom:1px solid #1e293b;}\n.pl-stat .n{display:block;font-size:1.6em;font-weight:800;color:#a78bfa;}\n.pl-stat 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td{background:#2e1065;color:#fff;font-weight:600;}\n.pl-char{display:block;font-size:.78em;color:#94a3b8;font-weight:400;margin-top:2px;}\n.pl-opt .pl-char{color:#c4b5fd;}\n.pl-graph{background:#020617;border:1px solid #334155;border-radius:8px;padding:14px;margin:18px 0;}\n.pl-graph-title{font-size:.78em;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:#94a3b8;margin:0 0 10px;}\n.pl-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;}\n.pl-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#94a3b8;}\n.pl-sw{width:22px;height:3px;border-radius:2px;display:inline-block;}\n.pl-note{background:#1e293b;border:1px solid #334155;border-radius:8px;padding:14px 16px;margin-top:6px;}\n.pl-note p{margin:0;color:#cbd5e1;font-size:13.5px;line-height:1.6;}\n.pl-link{color:#a78bfa;text-decoration:underline;}\n.pl-cta{background:linear-gradient(135deg,#020617 0%,#2e1065 100%);padding:40px 36px;text-align:center;color:#fff;}\n.pl-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Micro Series Enclosure for the Arc Audio A12\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Arc Audio A12\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e1.00 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Arc Audio A12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.00\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.176\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e36 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.85 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eA12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Arc Audio A12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the A12's published sealed target, with the baffle bored to the A12's 10.91 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.85 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe A12 carries a published \u003cstrong\u003eFs of 25.01 Hz, Qts of 0.612 and Vas of 76.32 litres\u003c\/strong\u003e, and an EBP of 38, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e1.00 cubic feet net\u003c\/strong\u003e, against a published recommendation of 1.0 cu ft gross. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Micro Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEvery layer is a precision cut ring and the stacked layers do the joining themselves, so there is no butt joint or dado to flex or leak. Dowel reinforcement runs between layers as tension hardware only.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own A12, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Arc Audio A12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eArc Audio A12 D2  |  Qts 0.612  |  Fs 25.01 Hz  |  Vas 76.32 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e1.00 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.176\u003c\/td\u003e\n\u003ctd\u003e48.1 Hz\u003c\/td\u003e\n\u003ctd\u003e35.6 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eArc Audio A12 Frequency Response | Sealed, 1.00 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\n\u003crect x=\"0\" y=\"0\" width=\"680\" height=\"300\" fill=\"#0f172a\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"270.0\" y2=\"270.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"274.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-12dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"219.2\" y2=\"219.2\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"223.2\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-9dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"168.4\" y2=\"168.4\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"172.4\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-6dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"121.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"66.8\" y2=\"66.8\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"70.8\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e0dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"16.0\" y2=\"16.0\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"20.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#8b5cf6\" stroke-width=\"1.4\" stroke-dasharray=\"4 3\" opacity=\"0.85\"\u003e\u003c\/line\u003e\n\u003ctext x=\"660\" y=\"112.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#a78bfa\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42.0\" x2=\"42.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"42.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e20Hz\u003c\/text\u003e\n\u003cline x1=\"135.1\" x2=\"135.1\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"135.1\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e30Hz\u003c\/text\u003e\n\u003cline x1=\"252.5\" x2=\"252.5\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"252.5\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e50Hz\u003c\/text\u003e\n\u003cline x1=\"411.7\" x2=\"411.7\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"411.7\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e100Hz\u003c\/text\u003e\n\u003cline x1=\"570.9\" x2=\"570.9\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"570.9\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e200Hz\u003c\/text\u003e\n\u003cline x1=\"664.0\" x2=\"664.0\" y1=\"16\" y2=\"270\" stroke=\"#1e293b\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"664.0\" y=\"286\" text-anchor=\"middle\" font-size=\"10\" fill=\"#64748b\" font-family=\"Arial, sans-serif\"\u003e300Hz\u003c\/text\u003e\n\u003crect x=\"42\" y=\"16\" width=\"622\" height=\"254\" fill=\"none\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\n\u003cpolyline points=\"42.0,270.0 44.1,270.0 46.1,270.0 48.2,270.0 50.3,270.0 52.4,270.0 54.4,270.0 56.5,270.0 58.6,270.0 60.7,270.0 62.7,270.0 64.8,270.0 66.9,270.0 69.0,270.0 71.0,267.9 73.1,264.9 75.2,262.0 77.2,259.0 79.3,256.0 81.4,253.0 83.5,250.0 85.5,247.0 87.6,244.0 89.7,241.0 91.8,238.0 93.8,234.9 95.9,231.9 98.0,228.9 100.1,225.9 102.1,222.8 104.2,219.8 106.3,216.8 108.3,213.7 110.4,210.7 112.5,207.6 114.6,204.6 116.6,201.5 118.7,198.5 120.8,195.4 122.9,192.4 124.9,189.3 127.0,186.3 129.1,183.2 131.2,180.2 133.2,177.1 135.3,174.1 137.4,171.0 139.4,168.0 141.5,164.9 143.6,161.9 145.7,158.9 147.7,155.8 149.8,152.8 151.9,149.8 154.0,146.8 156.0,143.8 158.1,140.8 160.2,137.8 162.3,134.8 164.3,131.9 166.4,128.9 168.5,126.0 170.5,123.1 172.6,120.2 174.7,117.3 176.8,114.4 178.8,111.6 180.9,108.8 183.0,106.0 185.1,103.2 187.1,100.5 189.2,97.7 191.3,95.1 193.4,92.4 195.4,89.8 197.5,87.2 199.6,84.7 201.6,82.2 203.7,79.7 205.8,77.3 207.9,74.9 209.9,72.6 212.0,70.3 214.1,68.1 216.2,65.9 218.2,63.8 220.3,61.8 222.4,59.7 224.5,57.8 226.5,55.9 228.6,54.1 230.7,52.3 232.7,50.6 234.8,49.0 236.9,47.4 239.0,45.9 241.0,44.5 243.1,43.1 245.2,41.8 247.3,40.6 249.3,39.4 251.4,38.3 253.5,37.2 255.6,36.3 257.6,35.4 259.7,34.5 261.8,33.7 263.8,33.0 265.9,32.3 268.0,31.7 270.1,31.2 272.1,30.6 274.2,30.2 276.3,29.8 278.4,29.5 280.4,29.2 282.5,28.9 284.6,28.7 286.7,28.5 288.7,28.4 290.8,28.3 292.9,28.3 294.9,28.2 297.0,28.3 299.1,28.3 301.2,28.4 303.2,28.5 305.3,28.6 307.4,28.8 309.5,29.0 311.5,29.2 313.6,29.4 315.7,29.6 317.8,29.9 319.8,30.1 321.9,30.4 324.0,30.7 326.0,31.0 328.1,31.4 330.2,31.7 332.3,32.1 334.3,32.4 336.4,32.8 338.5,33.1 340.6,33.5 342.6,33.9 344.7,34.3 346.8,34.7 348.9,35.0 350.9,35.4 353.0,35.8 355.1,36.2 357.1,36.6 359.2,37.0 361.3,37.4 363.4,37.8 365.4,38.2 367.5,38.6 369.6,39.0 371.7,39.4 373.7,39.8 375.8,40.2 377.9,40.6 380.0,40.9 382.0,41.3 384.1,41.7 386.2,42.1 388.2,42.5 390.3,42.8 392.4,43.2 394.5,43.6 396.5,43.9 398.6,44.3 400.7,44.6 402.8,45.0 404.8,45.3 406.9,45.7 409.0,46.0 411.1,46.3 413.1,46.7 415.2,47.0 417.3,47.3 419.3,47.6 421.4,47.9 423.5,48.3 425.6,48.6 427.6,48.9 429.7,49.2 431.8,49.4 433.9,49.7 435.9,50.0 438.0,50.3 440.1,50.6 442.2,50.8 444.2,51.1 446.3,51.4 448.4,51.6 450.4,51.9 452.5,52.1 454.6,52.4 456.7,52.6 458.7,52.9 460.8,53.1 462.9,53.4 465.0,53.6 467.0,53.8 469.1,54.0 471.2,54.2 473.3,54.5 475.3,54.7 477.4,54.9 479.5,55.1 481.5,55.3 483.6,55.5 485.7,55.7 487.8,55.9 489.8,56.1 491.9,56.3 494.0,56.4 496.1,56.6 498.1,56.8 500.2,57.0 502.3,57.1 504.4,57.3 506.4,57.5 508.5,57.6 510.6,57.8 512.6,58.0 514.7,58.1 516.8,58.3 518.9,58.4 520.9,58.6 523.0,58.7 525.1,58.8 527.2,59.0 529.2,59.1 531.3,59.3 533.4,59.4 535.5,59.5 537.5,59.6 539.6,59.8 541.7,59.9 543.7,60.0 545.8,60.1 547.9,60.3 550.0,60.4 552.0,60.5 554.1,60.6 556.2,60.7 558.3,60.8 560.3,60.9 562.4,61.0 564.5,61.1 566.6,61.2 568.6,61.3 570.7,61.4 572.8,61.5 574.8,61.6 576.9,61.7 579.0,61.8 581.1,61.9 583.1,62.0 585.2,62.0 587.3,62.1 589.4,62.2 591.4,62.3 593.5,62.4 595.6,62.5 597.7,62.5 599.7,62.6 601.8,62.7 603.9,62.8 605.9,62.8 608.0,62.9 610.1,63.0 612.2,63.0 614.2,63.1 616.3,63.2 618.4,63.2 620.5,63.3 622.5,63.4 624.6,63.4 626.7,63.5 628.8,63.5 630.8,63.6 632.9,63.7 635.0,63.7 637.0,63.8 639.1,63.8 641.2,63.9 643.3,63.9 645.3,64.0 647.4,64.0 649.5,64.1 651.6,64.1 653.6,64.2 655.7,64.2 657.8,64.3 659.9,64.3 661.9,64.4 664.0,64.4\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e1.00 cu ft (Qtc 1.176)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the D2 set. The D4 A12 carries Qts 0.659 and Vas 81.81 litres, and a different Fs of 27 Hz, which in this same 1.00 cubic foot volume lands at \u003cstrong\u003eQtc 1.300, Fc 53.2 Hz and F3 38.4 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the A12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dual 4ohm","offer_id":43488593444953,"sku":"M12-S ARC A D4","price":629.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2 ohm","offer_id":43488593477721,"sku":"M12-S ARC A D2","price":629.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-12-sealed-enclosure-fits-arc-audio-sw12subwoofer-enclosuresproline-x-8161252.png?v=1782030248"},{"product_id":"proline-x-performance-wedge-p12-wds-iii-sealed-enclosure-for-dual-12-subwoofers","title":"Proline X Performance Wedge P12-WDS III Sealed Enclosure for Dual 12\" Subwoofers","description":"\u003cstyle\u003e\n  .ps-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .ps-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .ps-hero .ps-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .ps-hero .ps-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 20px 0; color: white; }\n  .ps-hero .ps-meta { font-size: 0.95em; color: #67e8f9; margin: 0; letter-spacing: 1px; }\n  .ps-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .ps-section-alt { background: #ecfeff; }\n  .ps-section h2 { color: #155e75; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .ps-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .ps-section p { font-size: 1.05em; margin: 0 0 18px 0; color: #334155; }\n  .ps-section strong { color: #0f172a; font-weight: 700; }\n  .ps-mdf-table { width: 100%; border-collapse: collapse; margin: 25px 0; background: #0f172a; color: #e2e8f0; border-radius: 8px; overflow: hidden; }\n  .ps-mdf-table td { padding: 14px 18px; border-bottom: 1px solid #1e293b; vertical-align: top; }\n  .ps-mdf-table tr:nth-child(even) { background: #0a1120; }\n  .ps-mdf-table tr:last-child td { border-bottom: none; }\n  .ps-mdf-table td:first-child { color: #06b6d4; font-weight: 700; white-space: nowrap; width: 25%; }\n  .ps-mdf-table td:nth-child(2) { color: white; font-weight: 700; width: 20%; }\n  .ps-mdf-table td:nth-child(3) { color: #cbd5e1; font-size: 0.95em; }\n\u003c\/style\u003e\n\u003cdiv class=\"ps-wrap\"\u003e\n\u003cdiv class=\"ps-hero\"\u003e\n\u003ch2 class=\"ps-title\"\u003eProline X P12-WDS III\u003c\/h2\u003e\n\u003cp class=\"ps-subtitle\"\u003eDual 12\" Wedge Sealed Enclosure | V3\u003c\/p\u003e\n\u003cp class=\"ps-subtitle\"\u003eEnclosure Only!\u003c\/p\u003e\n\u003cp class=\"ps-meta\"\u003e2.0 ft³ Net | Common Sealed Chamber | Wedge Profile | 8.5\" Max Depth | Langboard Elite MDF | Built in Tennessee\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-section\"\u003e\n\u003ch2\u003eTwo 12\" Drivers. Wedge Geometry. Common Sealed Chamber.\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eProline X P12-WDS III\u003c\/strong\u003e is the third-generation dual 12\" sealed wedge enclosure, built for installs where two drivers are required and trunk space is still a constraint. At \u003cstrong\u003e2.0 ft³ net sealed\u003c\/strong\u003e in a common chamber with a tapered profile that hugs the rear seat contour, this enclosure delivers the combined output of a dual 12\" system in a footprint that reclaims inches of upper trunk space compared to a rectangular alternative.\u003c\/p\u003e\n\u003cp\u003eThe wedge tapers from \u003cstrong\u003e13.75\" deep at the bottom to 8.5\" deep at the top\u003c\/strong\u003e, matching the natural recline angle of most modern rear seats. Position the shallow edge against the seatback and the deep edge on the trunk floor, the enclosure nestles flush against the seat naturally, eliminating the wasted triangular void that forms behind a rectangular enclosure. The \u003cstrong\u003e28\" width\u003c\/strong\u003e accommodates both drivers at correct baffle spacing. \u003cstrong\u003eInternal bracing\u003c\/strong\u003e runs throughout the common chamber to control panel resonance across the full enclosure width.\u003c\/p\u003e\n\u003cp\u003eEvery panel is CNC-cut from \u003cstrong\u003eLangboard Elite MDF\u003c\/strong\u003e to exact internal volume and assembled by hand in our Tennessee facility. Available in \u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e at $229.99 or \u003cstrong\u003ePlush Black\u003c\/strong\u003e at $239.99. Shipping is included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-section ps-section-alt\"\u003e\n\u003ch2\u003eWhy Wedge Geometry\u003c\/h2\u003e\n\u003ch3\u003eThe Problem With Rectangular Enclosures\u003c\/h3\u003e\n\u003cp\u003eModern sedan and coupe rear seats recline at 20 to 30 degrees from vertical. When a rectangular enclosure is placed against that angled surface, the bottom edge sits flush against the seat while the top edge extends straight up into the trunk, leaving a triangular air gap behind the enclosure that serves no acoustic purpose. That wasted space typically measures 2 to 4 inches at the top edge, and at 28\" wide, a dual driver rectangular enclosure wastes significantly more of your trunk than a single driver alternative.\u003c\/p\u003e\n\u003ch3\u003eThe Solution\u003c\/h3\u003e\n\u003cp\u003eThe P12-WDS III's back panel angles at approximately 20 degrees, closely matching typical rear seat recline. Position the shallow edge (8.5\") against the seatback and the deep edge (13.75\") on the trunk floor, the enclosure fills the available space correctly with no wasted void behind it. The full \u003cstrong\u003e2.0 ft³ internal airspace\u003c\/strong\u003e is preserved through optimized width and height dimensions. No acoustic compromise. Space savings only.\u003c\/p\u003e\n\u003ch3\u003eWhere The Wedge Pays Off\u003c\/h3\u003e\n\u003cp\u003eFull-size sedans running dual 12\" drivers where trunk depth is the limiting factor. Coupes and sports cars with aggressive seat recline angles and enough trunk width for a 28\" enclosure. Any dual driver install where the rectangular alternative consumes too much of the upper trunk space. The wedge format is the correct solution when you need two drivers and you still need to use your trunk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-section\"\u003e\n\u003ch2\u003eConstruction: Langboard Elite MDF, V-Groove And Dado Joinery\u003c\/h2\u003e\n\u003ch3\u003eLangboard Elite MDF, Named And Mill-Documented\u003c\/h3\u003e\n\u003cp\u003eEvery panel is cut from \u003cstrong\u003eLangboard Elite MDF, 3\/4\" (18mm)\u003c\/strong\u003e, a named, mill-documented panel stock produced in the United States. The specifications below are pulled directly from Langboard's published mill data.\u003c\/p\u003e\n\u003ctable class=\"ps-mdf-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e48.5 lbs\/ft³\u003c\/td\u003e\n\u003ctd\u003eHigher density means less porosity, better screw retention, reduced resonance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Bond\u003c\/td\u003e\n\u003ctd\u003e200 psi\u003c\/td\u003e\n\u003ctd\u003eResistance to delamination under sustained bass pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulus of Elasticity\u003c\/td\u003e\n\u003ctd\u003e410,000 psi\u003c\/td\u003e\n\u003ctd\u003ePanel stiffness under load; less flex means less resonance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFace Screw Holding\u003c\/td\u003e\n\u003ctd\u003e325 lbs\u003c\/td\u003e\n\u003ctd\u003eBaffle hardware stays locked under vibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdge Screw Holding\u003c\/td\u003e\n\u003ctd\u003e250 lbs\u003c\/td\u003e\n\u003ctd\u003eJoint integrity at every panel edge connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eV-Groove And Dado Joinery\u003c\/h3\u003e\n\u003cp\u003eEvery panel joint uses \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. The angled back panel on a wedge enclosure presents joint geometry that simple butt joints cannot handle reliably over time. V-groove and dado joinery provides the mechanical interlocking and increased glue surface area that keeps angled joints airtight under bass pressure cycling.\u003c\/p\u003e\n\u003ch3\u003eInternal Bracing\u003c\/h3\u003e\n\u003cp\u003eAt 28\" wide, the P12-WDS III has significant unsupported panel spans. \u003cstrong\u003eInternal bracing runs throughout the common chamber\u003c\/strong\u003e to control panel resonance independently of joinery. Every structural flex point is addressed before it becomes an acoustic problem: the result is an enclosure that stays rigid and acoustically inert under sustained output from two drivers.\u003c\/p\u003e\n\u003ch3\u003eProline X Terminal Cup\u003c\/h3\u003e\n\u003cp\u003eBuilt in-house at our Tennessee facility. \u003cstrong\u003eProline X ABS\/carbon fiber terminal cup with stainless hardware and copper ring terminals\u003c\/strong\u003e, pre-wired 12g OFC speaker wire. Recessed mount keeps the cup protected from cargo contact.\u003c\/p\u003e\n\u003ch3\u003eHand-Assembled In Tennessee\u003c\/h3\u003e\n\u003cp\u003eEvery enclosure is CNC-cut on ShopSabre industrial routers and hand-assembled at our facility in Tullahoma, Tennessee. Inspected before it ships. No overseas manufacturing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-section ps-section-alt\"\u003e\n\u003ch2\u003eFitment Guide\u003c\/h2\u003e\n\u003ch3\u003eDimensional Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 28\" W x 14.5\" H x 8.5\" D (top) \/ 13.75\" D (bottom)\u003cbr\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 2.0 ft³, common chamber\u003cbr\u003e\u003cstrong\u003eAlignment:\u003c\/strong\u003e Sealed\u003cbr\u003e\u003cstrong\u003eSubwoofer Cutout:\u003c\/strong\u003e 11.13\" x2\u003cbr\u003e\u003cstrong\u003eMax Mounting Depth:\u003c\/strong\u003e 8.5\"\u003cbr\u003e\u003cstrong\u003eFront Panel Thickness:\u003c\/strong\u003e 0.75\" Single Baffle\u003c\/p\u003e\n\u003ch3\u003eDriver Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe P12-WDS III accommodates any 12\" subwoofer with a cutout diameter at or below \u003cstrong\u003e11.13\"\u003c\/strong\u003e and a mounting depth at or below \u003cstrong\u003e8.5\"\u003c\/strong\u003e. Both drivers share a common \u003cstrong\u003e2.0 ft³ sealed chamber\u003c\/strong\u003e. Verify published driver specs before ordering. If you need help confirming compatibility with a specific driver, contact us before purchasing.\u003c\/p\u003e\n\u003ch3\u003eInstallation Orientation\u003c\/h3\u003e\n\u003cp\u003ePosition the \u003cstrong\u003eshallow edge (8.5\") against the rear seat\u003c\/strong\u003e, with the \u003cstrong\u003edeep edge (13.75\") on the trunk floor\u003c\/strong\u003e. This is the orientation that produces the space-saving benefit, the taper follows the angle of the rear seatback, eliminating the triangular void that forms behind a rectangular enclosure. Installing with the deep edge against the seat defeats the purpose of the wedge geometry entirely. Verify orientation before final installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-section\"\u003e\n\u003ch2\u003eDual 12\" Sealed. Wedge Geometry. Tennessee-Built.\u003c\/h2\u003e\n\u003cp\u003eThe Proline X P12-WDS III delivers dual 12\" sealed alignment in a \u003cstrong\u003ecommon 2.0 ft³ chamber\u003c\/strong\u003e in a footprint that works with your vehicle's rear seat geometry instead of against it. \u003cstrong\u003eLangboard Elite MDF. V-groove and dado joinery. Internal bracing throughout. Proline X ABS\/carbon fiber terminal cup\u003c\/strong\u003e with stainless hardware and copper ring terminals. Hand-assembled in Tennessee and inspected before it ships.\u003c\/p\u003e\n\u003cp\u003eTwo drivers. Common sealed chamber. Wedge profile. Shipping included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dark Grey Trunk Liner","offer_id":43491170189401,"sku":"P12D-S W G","price":229.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black Carpet","offer_id":43491170222169,"sku":"P12D-S W B","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/dual-arc-audio-x2-12-matching-proline-x-enclosure-bundle-box-50-offsubwoofer-enclosuresproline-x-6825767.png?v=1783112229"},{"product_id":"proline-x-p12d-s-w-dual-12-sealed-wedge-subwoofer-enclosure-loaded-with-arc-audio-x2v2-12","title":"Proline X P12D-S W | Dual 12\" Sealed Wedge Subwoofer Enclosure | Loaded with Arc Audio X2V2 12","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap 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h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X P12D-S W Dual Chamber Sealed Wedge, Loaded\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of Arc Audio X2V2 12 drivers\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e2.00 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Arc Audio X2V2 12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e2.00\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.918\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e41 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e6.75 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eX2V2 12 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Arc Audio X2V2 12\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the X2V2 12's published sealed target, with the baffle bored to the X2V2 12's 11.11 in cutout, and clearance cut for its 6.75 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe X2V2 12 carries a published \u003cstrong\u003eFs of 25.57 Hz, Qts of 0.471 and Vas of 79.36 litres\u003c\/strong\u003e, and an EBP of 49, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eTwo Drivers, Two Sealed Chambers\u003c\/h3\u003e\n\u003cp\u003eA full divider splits this cabinet down the middle. Each X2V2 12 gets its own \u003cstrong\u003e1.00 cubic foot\u003c\/strong\u003e sealed volume, 2.00 cubic feet total. Neither driver sees the other's back pressure, so the pair behaves like two matched single builds rather than one shared chamber.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Performance Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is cut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nThe panels are V-grooved and folded on the seam, then dadoed where the internal bracing lands, so every joint is a mechanical lock rather than a glue line under load.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own pair of X2V2 12 drivers, or order it loaded and we mount the drivers, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Arc Audio X2V2 12, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eArc Audio X2V2 12 D2  |  Qts 0.471  |  Fs 25.57 Hz  |  Vas 79.36 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e1.00 cu ft \u003cspan class=\"pl-char\"\u003eper chamber, 2.00 cu ft total\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.918\u003c\/td\u003e\n\u003ctd\u003e49.9 Hz\u003c\/td\u003e\n\u003ctd\u003e40.9 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eArc Audio X2V2 12 Frequency Response | Sealed, 1.00 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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class=\"pl-note\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on coil choice:\u003c\/strong\u003e The figures above are the D2 set. The D4 X2V2 12 carries Qts 0.543 and Vas 82.65 litres, which in this same 1.00 cubic foot volume lands at \u003cstrong\u003eQtc 1.075, Fc 50.6 Hz and F3 38.6 Hz\u003c\/strong\u003e. Worth accounting for if you are choosing between the two. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 1 year limited warranty, built one at a time in Tullahoma, Tennessee. Ordered loaded, the X2V2 12 carries its own 1 year manufacturer warranty through authorized dealers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dual 4ohm \/ Grey","offer_id":43491239690329,"sku":"P12D-S W ARC X2V2 D4 G","price":599.99,"currency_code":"USD","in_stock":true},{"title":"Dual 4ohm \/ Plush Black","offer_id":43491239723097,"sku":"P12D-S W ARC X2V2 D4 B","price":599.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2 ohm \/ Grey","offer_id":43491239755865,"sku":"P12D-S W ARC X2V2 D2 G","price":599.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2 ohm \/ Plush Black","offer_id":43491239788633,"sku":"P12D-S W ARC X2V2 D2 B","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/dual-arc-audio-x2-12-matching-proline-x-enclosure-bundle-box-50-offsubwoofer-enclosuresproline-x-6825767.png?v=1783112229"},{"product_id":"performance-optimized-dual-sealed-12-enclosure-arc-audio-12-arc-series","title":"Performance Optimized Dual Sealed 12\" Enclosure | Arc Audio 12\" Arc Series","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(6, 182, 212, 0.2); border: 1px solid #06b6d4; color: #67e8f9; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #f0f9ff; }\n  .po-section h2 { color: #0e7490; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #06b6d4; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #0e7490; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #f0f9ff; border-left: 4px solid #06b6d4; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized | Dual Arc Audio ARC 12\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eDual 12\" Sealed Enclosure | Driver-Specific for the Arc Audio ARC Series 12\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e2.2 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eCommon Chamber\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eDriver-Specific\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e32\" × 15\" × 12\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eTwo Arc ARC 12s in One Engineered Cabinet\u003c\/h2\u003e\n    \u003cp\u003eThe Performance Optimized Dual Sealed 12 is a 2.2 cubic foot common-chamber sealed enclosure engineered around a pair of Arc Audio ARC Series 12\" subwoofers. Total internal airspace, baffle geometry, and bracing layout are all tuned to the ARC 12's linear excursion characteristics and 350-watt RMS power handling. Same driver-specific approach as the single Performance Optimized boxes, scaled to a properly loaded pair.\u003c\/p\u003e\n    \u003cp\u003eThe ARC Series is Arc Audio's balanced-performance line, enough motor to hit hard, enough refinement to stay musical. Two of them in a properly sized cabinet doesn't just double the output. It cuts the workload on each driver in half, drops distortion, extends thermal headroom, and gives you the effortless midbass presentation that separates a serious system from a loud one.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e2.2 cubic feet of net internal volume, sized specifically for a pair of Arc Audio ARC 12 drivers operating in a shared sealed environment. Each driver effectively operates against 1.1 cubic feet of airspace, the middle of Arc's specified sealed range of 0.9 to 1.25 cubic feet per driver.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWhy More Cone Area Sounds Better, Not Just Louder\u003c\/h2\u003e\n    \u003cp\u003eDoubling the driver count isn't about hitting bigger numbers on a meter. It's about each driver doing less work to produce the same output. Two 12s playing at moderate excursion will always sound cleaner than a single 12 working hard to hit the same SPL. Lower distortion, lower thermal compression, and a presentation that sounds easier on the ears even at high listening levels.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTwice the Cone Area\u003c\/h4\u003e\n        \u003cp\u003eTwo Arc ARC 12s deliver roughly twice the radiating area of a single 12. That extra surface area means each driver moves less to produce the same SPL, which translates directly to lower mechanical and thermal stress on each woofer.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e700 Watts RMS System Rating\u003c\/h4\u003e\n        \u003cp\u003eEach Arc ARC 12 handles 350 watts RMS. Power split across two drivers generates less heat per voice coil than the same total power into a single coil. Less heat means less thermal compression across long listening sessions.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eEffortless Midbass\u003c\/h4\u003e\n        \u003cp\u003eArc Audio's linear excursion philosophy is designed for consistent performance across all volume levels. Two ARC 12s sharing the workload push that consistency further. Kick drums, bass guitar fundamentals, and vocal warmth all sit cleaner because neither driver is straining.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSound Quality at Volume\u003c\/h4\u003e\n        \u003cp\u003eThe biggest practical difference between one Arc ARC 12 and two: you can listen at higher volumes without the system starting to sound stressed. At any given SPL, the pair is operating well below either driver's mechanical or thermal limits.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered Around the Arc ARC 12's Parameters\u003c\/h2\u003e\n    \u003cp\u003eArc Audio specifies the ARC Series 12 for sealed enclosures between 0.9 and 1.25 cubic feet per driver. The Performance Optimized Dual Sealed 12 delivers 2.2 cubic feet total, which gives each ARC 12 access to 1.1 cubic feet of effective airspace, the middle of Arc's specified range, where the driver's linear excursion behavior and thermal characteristics both perform optimally.\u003c\/p\u003e\n    \u003ch3\u003eVolume Selection\u003c\/h3\u003e\n    \u003cp\u003e2.2 cubic feet net is the total internal volume after material thickness, bracing, and driver displacement. With two ARC 12s sharing the cabinet, each driver effectively operates against 1.1 cubic feet of air spring, the SQ-oriented middle of the ARC 12's sealed range, where Qtc lands near the ideal target for clean transient response and controlled low-end extension.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eBoth baffles are cut to the Arc ARC 12's exact mounting specification. Arc Audio's proprietary four-spoke stamped steel basket with compound-curve construction and integrated cooling vents drops in cleanly, with adequate internal clearance behind both magnet structures inside the 12\" deep cabinet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Less panel resonance, tighter joints, and a longer service life under daily use at real power levels.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the cabinet fold into shape with maximum glue surface. Dado joints lock the baffle and rear panel into the side walls. No fasteners visible from outside.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n        \u003cp\u003eThreaded inserts pressed into both baffle backsides accept stainless steel mounting screws. No stripped pilot holes, no MDF damage from drywall screws, no surprises when the next driver upgrade rolls around.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. Tolerances that manual fabrication can't hold. Joints close cleanly, baffle concentricity stays accurate, and internal volume is consistent unit to unit. The finished cabinet weighs 45 pounds, the mass that comes from real MDF, honest construction, and no hollow corners.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle inserts to match your build. Or skip the inserts entirely (-$40) for a clean, understated look. The inserts are purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eBox-Only or Loaded Pair\u003c\/h3\u003e\n    \u003cp\u003eAdd a matched pair of \u003cstrong\u003eDual 2-ohm\u003c\/strong\u003e or \u003cstrong\u003eDual 4-ohm\u003c\/strong\u003e Arc Audio ARC 12 drivers directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Already own your ARC 12s? Order the enclosure box-only and drop in the drivers you have.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring Two Arc ARC 12s to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eBoth drivers share a single terminal cup, pre-wired with 12-gauge OFC for clean signal transfer. The wiring configuration depends on the impedance version of the ARC 12s you run and what your amplifier is stable at.\u003c\/p\u003e\n    \u003ch3\u003eTwo Dual 2-Ohm Arc ARC 12s\u003c\/h3\u003e\n    \u003cp\u003eEach driver's coils in parallel = 1 ohm per driver. Two 1-ohm drivers in series = 2 ohms combined. Two 1-ohm drivers in parallel = 0.5 ohm combined (most monoblock amps won't handle this. Verify your amp's stable load).\u003c\/p\u003e\n    \u003ch3\u003eTwo Dual 4-Ohm Arc ARC 12s\u003c\/h3\u003e\n    \u003cp\u003eEach driver's coils in parallel = 2 ohms per driver. Two 2-ohm drivers in parallel = 1 ohm combined. Two 2-ohm drivers in series = 4 ohms combined. The Dual 4-ohm version is the more flexible option for most amplifier setups.\u003c\/p\u003e\n    \u003cp\u003eArc Audio manufactures monoblock amplifiers engineered to pair specifically with their subwoofer lineup, the Arc Audio XD Series and Mini Series monoblocks in the 700-800 watt RMS range give you a fully matched system. Any quality monoblock stable at your chosen impedance will also work well.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eTwo Arc ARC 12s, Done Right\u003c\/h2\u003e\n    \u003cp\u003eDriver-specific airspace sized for a pair, Performance Series construction, and the option to bundle a matched pair of Arc Audio ARC 12 drivers in one order. The Performance Optimized Dual Sealed 12 is the cabinet Arc's ARC Series 12s were engineered to live in.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Plush Black \/ Black","offer_id":43493596823641,"sku":"PO ARC 12D-S BB none","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue","offer_id":43493596921945,"sku":"PO ARC 12D-S BBL none","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Red","offer_id":43493597020249,"sku":"PO ARC 12D-S BR none","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ White","offer_id":43493597118553,"sku":"PO ARC 12D-S  BW none","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ None","offer_id":43493597216857,"sku":"PO ARC 12D-S B none","price":369.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ Black","offer_id":43493597315161,"sku":"PO ARC 12D-S GB None","price":379.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ Blue","offer_id":43493597413465,"sku":"PO ARC 12D-S GBL None","price":379.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ Red","offer_id":43493597511769,"sku":"PO ARC 12D-S GR None","price":379.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ White","offer_id":43493597610073,"sku":"PO ARC 12D-S GW None","price":379.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ None","offer_id":43493597708377,"sku":"PO ARC 12D-S G None","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/performance-optimized-dual-sealed-10-enclosure-arc-audio-10-arc-seriessubwoofer-enclosuresproline-x-4109294.webp?v=1783112230"},{"product_id":"performance-optimized-sealed-12-enclosure-arc-audio-12-arc-series","title":"Performance Optimized Sealed 12\" Enclosure | Arc Audio 12\" Arc Series","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(6, 182, 212, 0.2); border: 1px solid #06b6d4; color: #67e8f9; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #f0f9ff; }\n  .po-section h2 { color: #0e7490; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #06b6d4; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #0e7490; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #f0f9ff; border-left: 4px solid #06b6d4; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized | Arc Audio ARC 12\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 12\" Sealed Enclosure | Driver-Specific for the Arc Audio ARC Series 12\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e1.1 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eDriver-Specific\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eThreaded Inserts\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e24\" × 15\" × 9\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe Arc Audio ARC 12 Deserves a Box Built for It\u003c\/h2\u003e\n    \u003cp\u003eThe Arc Audio ARC Series 12 is engineered around a linear excursion philosophy, consistent mechanical and electrical behavior across the full excursion range, high-temperature black anodized voice coils, and a four-spoke stamped steel basket with compound curves designed to eliminate resonance. Drop it in a generic box and you'll get good bass. Drop it in a cabinet engineered around its published Thiele-Small parameters and you'll hear what Arc's engineering team built it to do.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Sealed 12 for Arc Audio ARC 12 is that cabinet. Internal volume, baffle thickness, and mounting hardware are all chosen to extract the ARC 12's full mechanical and acoustic potential, not approximated, not averaged across a class of 12s, not adapted from a universal box.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003eThis enclosure is engineered specifically around the Arc Audio ARC Series 12. The 1.1 cubic foot net volume sits in the middle of Arc Audio's specified sealed range of 0.9 to 1.25 cubic feet, the sweet spot for the driver's linear excursion behavior and balanced transient response.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWhy Performance Optimized Sits Where It Does\u003c\/h2\u003e\n    \u003cp\u003eThe Performance Optimized line is the bridge between our standard Performance Series and our top-tier Professional Series. Same Performance-tier construction quality, Langboard Elite MDF, V-groove and dado joinery, ShopSabre CNC routing, but the geometry of every panel is cut around one specific driver instead of a class of drivers.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003evs Performance Series\u003c\/h4\u003e\n        \u003cp\u003eStandard Performance Series boxes (P6 through P15) are built for universal driver fitment within a size class. Great if you want flexibility across multiple driver options. Performance Optimized takes the same construction and locks the airspace and hardware to one specific driver.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003evs Professional Series\u003c\/h4\u003e\n        \u003cp\u003eProfessional Series uses extensive multi-layer baffles, triple-stacked construction, and a 2-year warranty for the most demanding builds. Performance Optimized delivers driver-specific engineering at a more accessible price point with a 1-year warranty.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered Around the Arc ARC 12's Parameters\u003c\/h2\u003e\n    \u003cp\u003eArc Audio specifies the ARC Series 12 for sealed enclosures between 0.9 and 1.25 cubic feet. The Performance Optimized Sealed 12 delivers 1.1 cubic feet net, the middle of Arc's specified range, where Qtc lands where it should for balanced transient response and controlled low-end extension. Not so tight that you lose extension, not so loose that you lose punch.\u003c\/p\u003e\n    \u003ch3\u003eVolume Selection\u003c\/h3\u003e\n    \u003cp\u003e1.1 cubic feet net is the sweet spot in Arc's published sealed range for the ARC 12. Volumes below 0.9 cubic feet push Qtc above 0.9, adding midbass lift and costing low-end extension. Volumes above 1.25 cubic feet loosen the response and compromise transient tightness. 1.1 cubic feet sits in the balanced middle, the volume Arc's engineering team would build if they were building a sealed box for their own driver.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eThe baffle is cut to the Arc ARC 12's exact mounting specification. Arc Audio's four-spoke stamped steel basket with compound-curve construction and integrated cooling vents drops in cleanly with room behind the magnet structure for adequate ventilation inside the 9\" deep cabinet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Less panel resonance, tighter joints, and a longer service life under daily use at real power levels.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the cabinet fold into shape with maximum glue surface. Dado joints lock the baffle and rear panel into the side walls. No fasteners visible from outside.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n        \u003cp\u003eThreaded inserts pressed into the baffle backside accept stainless steel mounting screws. No stripped pilot holes, no MDF damage from drywall screws, no surprises when the next driver upgrade rolls around.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. Tolerances that manual fabrication can't hold. Joints close cleanly, baffle concentricity stays accurate, and internal volume is consistent unit to unit.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n    \u003cp\u003eAdd a \u003cstrong\u003eDual 2-ohm\u003c\/strong\u003e or \u003cstrong\u003eDual 4-ohm\u003c\/strong\u003e Arc Audio ARC 12 driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Already own your ARC 12? Order the enclosure box-only and drop in the driver you have.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the Arc ARC 12 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe Arc Audio ARC 12 is a dual voice coil driver available in Dual 2-ohm (D2) or Dual 4-ohm (D4) configurations. The pre-wired terminal cup accepts either impedance version via 12-gauge OFC, with stainless steel input hardware.\u003c\/p\u003e\n    \u003cp\u003eA Dual 2-ohm ARC 12 wired in parallel presents a 1-ohm load. A Dual 2-ohm wired in series presents 4 ohms. A Dual 4-ohm ARC 12 wired in parallel presents 2 ohms, and wired in series presents 8 ohms. The ARC 12 is rated for 350 watts RMS, aim for a clean, well-regulated amplifier delivering 300 to 400 watts at your chosen impedance.\u003c\/p\u003e\n    \u003cp\u003eArc Audio manufactures monoblock amplifiers engineered to pair specifically with their subwoofer lineup, the Arc Audio XD Series and Mini Series monoblocks in the 350 to 500 watt RMS range give you a fully matched system. Any quality monoblock stable at your chosen impedance will also work well.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eStop Compromising Your Arc ARC 12\u003c\/h2\u003e\n    \u003cp\u003eDriver-specific engineering, Performance Series construction, and the option to bundle the Arc Audio ARC 12 driver in one order. Build the box that was designed for the sub you've already chosen.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Plush Black \/ Black","offer_id":43494021464153,"sku":"PO ARC 12-S BB none","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue","offer_id":43494021496921,"sku":"PO ARC 12-S BBL none","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Red","offer_id":43494021529689,"sku":"PO ARC 12-S BR none","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ White","offer_id":43494021562457,"sku":"PO ARC 12-S  BW none","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ None","offer_id":43494021595225,"sku":"PO ARC 12-S B none","price":269.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ Black","offer_id":43494021627993,"sku":"PO ARC 12-S GB None","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ Blue","offer_id":43494021660761,"sku":"PO ARC 12-S GBL None","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ Red","offer_id":43494021693529,"sku":"PO ARC 12-S GR None","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ White","offer_id":43494021726297,"sku":"PO ARC 12-S GW None","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Dark Gray Trunkliner \/ None","offer_id":43494021759065,"sku":"PO ARC 12-S G None","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/performance-optimized-sealed-10-enclosure-arc-audio-10-arc-seriessubwoofer-enclosuresproline-x-4489032.webp?v=1783112228"},{"product_id":"performance-optimized-sealed-dual-12-enclosure-stereo-integrity-12-sql-series","title":"Performance Optimized Sealed Dual 12\" Enclosure | Stereo Integrity SQL-12","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(6, 182, 212, 0.2); border: 1px solid #06b6d4; color: #67e8f9; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #f0f9ff; }\n  .po-section h2 { color: #0e7490; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #06b6d4; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #0e7490; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #f0f9ff; border-left: 4px solid #06b6d4; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized | Dual Stereo Integrity SQL 12\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eDual 12\" Sealed Enclosure | Isolated Chambers | Dual Mounting Face for the SQL 12 Series 2\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e2.0 ft³ Net Total\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eIsolated Chambers\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1.0 ft³ Per Chamber\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e31\" × 15\" × 13.625\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eDouble Baffle\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eTwo Stereo Integrity SQL 12s, Each in Their Own Engineered Chamber\u003c\/h2\u003e\n    \u003cp\u003eThe Performance Optimized Dual Sealed 12 for the Stereo Integrity SQL 12 is a fully chambered sealed enclosure engineered around a pair of SQL 12 Series 2 subwoofers. Two isolated 1.0 cubic foot chambers, separated by a center divider, each tuned to the SQL 12's published Thiele-Small parameters. Dual mounting face design gives each driver its own dedicated baffle. No shared airspace, no acoustic crosstalk between drivers, no compromise from doubling up in a common chamber.\u003c\/p\u003e\n    \u003cp\u003eThis is not the same construction as our common-chamber PO duals. The SQL 12 is a serious high-power driver. 1000 watts RMS per unit, 26mm one-way linear Xmax, and enough motor force to move meaningful air. At those power and excursion levels, isolated chambers stop being nice-to-have and become the correct engineering answer. Each SQL 12 operates in its own dedicated acoustic environment, unaffected by what the other driver is doing at any given moment.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003eEach SQL 12 gets its own sealed 1.0 cubic foot chamber, the maximum sealed volume Stereo Integrity specifies for the SQL 12 Series 2. The chambered design means each driver operates as if it were in its own dedicated single enclosure, with a center divider that also serves as structural bracing.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWhy Isolated Chambers Matter at This Power Level\u003c\/h2\u003e\n    \u003cp\u003eFor lower-power dual subwoofer systems in the 300-500 watt per driver range, a common chamber works fine. Matched driver pairs load symmetrically, and shared airspace introduces minimal interaction. At the SQL 12's 1000 watt RMS per driver rating, the calculation changes. Higher power means more cone excursion, more thermal load, and more asymmetric behavior between the two drivers as they respond to different thermal and mechanical states in real time. Isolated chambers eliminate that variable entirely.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSymmetric Loading Under Real Power\u003c\/h4\u003e\n        \u003cp\u003eEach SQL 12 operates against its own dedicated 1.0 cubic foot airspace. If one driver's voice coil resistance rises from heat faster than the other, or if one driver breaks in at a slightly different rate, the pair still performs consistently because they aren't coupled through shared air.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eForce Cancellation Benefits\u003c\/h4\u003e\n        \u003cp\u003eThe dual mounting face design creates opposing forces that partially cancel through the cabinet structure. Less mechanical energy transferred to the vehicle chassis, less rattle in trim panels, and cleaner perceived output because the cabinet itself is doing less unwanted work.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eStructural Rigidity\u003c\/h4\u003e\n        \u003cp\u003eThe center divider acts as a full-length brace in addition to its acoustic role. The 31\" cabinet width is split into two 15.5\" panel sections structurally, dramatically reducing panel flex compared to an unbraced wide interior at the power levels the SQL 12 delivers.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePredictable Behavior at Full Excursion\u003c\/h4\u003e\n        \u003cp\u003eThe SQL 12's 26mm one-way Xmax means significant air displacement per stroke. Isolated chambers guarantee each driver's air spring stays consistent through the full excursion range, without pressure variations from the second driver influencing the first.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered Around the SQL 12's Parameters\u003c\/h2\u003e\n    \u003cp\u003eStereo Integrity specifies the SQL 12 Series 2 for sealed enclosures between 0.65 and 1.0 cubic feet per driver. The Performance Optimized Dual Sealed 12 delivers 1.0 cubic foot per chamber, the upper end of SI's specified range, where the SQL's deep low-end extension characteristics fully develop. In a properly sized cabinet, the SQL 12 plays down to F3 points in single-digit territory, delivering the low-frequency response that makes SI's SQL series unmatched at its price point.\u003c\/p\u003e\n    \u003ch3\u003eVolume Selection\u003c\/h3\u003e\n    \u003cp\u003e1.0 cubic foot per chamber is the maximum of SI's recommended sealed volume range. Smaller volumes tighten Qtc and lose some low-end extension. Larger volumes fall outside SI's specification and compromise transient control. 1.0 cubic foot per driver is where the SQL 12 delivers on its full low-end capability while staying inside the driver's engineered operating window.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eBoth baffles are cut to the SQL 12's exact 11.33\" cutout specification and doubled to 1.5\" total thickness at the mounting position. The SQL 12's 7\" mounting depth leaves comfortable internal clearance inside the 13.625\" deep cabinet. Each driver has its own dedicated mounting face, a true dual-face design that separates the two drivers acoustically and mechanically, with 8\/32 threaded inserts pressed into the doubled baffle stock for secure, full-depth mounting.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eDouble Baffle Mounting Faces\u003c\/h4\u003e\n        \u003cp\u003eEach of the two mounting faces uses a doubled 1.5\" total baffle thickness: two layers of 3\/4\" Langboard Elite MDF bonded together at the driver mounting position. Doubled baffle stock resists baffle flex and mounting screw pullout at the power levels the SQL 12 delivers.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts Into Double Baffle\u003c\/h4\u003e\n        \u003cp\u003eBoth baffles use 8\/32 threaded inserts pressed into the doubled 1.5\" MDF backside, providing full-depth thread engagement for the supplied stainless steel mounting screws. No stripped pilot holes, no MDF damage from drywall screws, and secure retention at high excursion levels.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the cabinet fold into shape with maximum glue surface. Dado joints lock the doubled baffles, rear panel, and center divider into the side walls, no fasteners visible from outside, no exposed end grain at joints.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cups (×2)\u003c\/h4\u003e\n        \u003cp\u003eOne Proline X ABS\/carbon fiber composite terminal cup per chamber, each pre-wired with 12-gauge OFC. Wire each driver to its own amp channel for maximum control, or jumper the cups externally for a single-channel pair.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. The center divider is dadoed into the top, bottom, and rear panels for maximum mechanical lock, not just glued in. Both mounting baffles are doubled to 1.5\" total thickness at the mounting positions. Internal volume is verified per chamber on every unit.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle inserts to match your build. Or skip the inserts entirely (-$40) for a clean, understated look. The inserts are purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eBox-Only or Loaded Pair\u003c\/h3\u003e\n    \u003cp\u003eAdd a matched pair of Stereo Integrity SQL 12 Series 2 drivers directly to your order in \u003cstrong\u003eDual 2-ohm or Dual 4-ohm\u003c\/strong\u003e and \u003cstrong\u003ePaper or Carbon Fiber\u003c\/strong\u003e dust cap configurations. Already own your SQL 12s? Order the enclosure box-only and drop in the drivers you have.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring Two SQL 12s to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eEach chamber has its own dedicated terminal cup, pre-wired with 12-gauge OFC. The two cups can be jumpered externally for a single-amp installation, or wired independently for dual monoblock or multi-channel amplifier setups.\u003c\/p\u003e\n    \u003ch3\u003eTwo Dual 2-Ohm SQL 12s\u003c\/h3\u003e\n    \u003cp\u003eEach driver's coils in parallel = 1 ohm per driver. Two 1-ohm drivers in parallel = 0.5 ohm combined (most monoblocks won't handle this. Verify your amp). Two 1-ohm drivers in series = 2 ohms combined. Each driver on its own monoblock at 1 ohm gives you the cleanest high-power setup.\u003c\/p\u003e\n    \u003ch3\u003eTwo Dual 4-Ohm SQL 12s\u003c\/h3\u003e\n    \u003cp\u003eEach driver's coils in parallel = 2 ohms per driver. Two 2-ohm drivers in parallel = 1 ohm combined. Two 2-ohm drivers in series = 4 ohms combined. Dual 4-ohm is the more flexible option for most amplifier setups at these power levels.\u003c\/p\u003e\n    \u003cp\u003eThe SQL 12 pair is rated for 2000 watts RMS combined. Aim for a clean, well-regulated amplifier or amplifier pair delivering 1500 to 2000 watts total at your chosen impedance. At this power level, amplifier quality matters more than headline numbers, regulated power supply, low THD, and honest RMS ratings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eTwo SQL 12s, Engineered Correctly\u003c\/h2\u003e\n    \u003cp\u003eIsolated chamber design, dual mounting face, driver-specific 1.0 cubic foot chambers, and Performance Series construction built for the power levels the SQL 12 delivers. The correct cabinet for a serious pair of SIs.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Plush Black \/ Black","offer_id":43786903289945,"sku":"PO12D-S SI BB","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue","offer_id":43786903322713,"sku":"PO12D-S SI BBL","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Red","offer_id":43786903355481,"sku":"PO12D-S SI BR","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ White","offer_id":43786903388249,"sku":"PO12D-S SI BW","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ None","offer_id":43786903421017,"sku":"PO12D-S SI B","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/performance-optimized-sealed-dual-12-enclosure-stereo-integrity-12-sql-seriessubwoofer-enclosuresproline-x-3250530.png?v=1784976188"},{"product_id":"performance-optimized-sealed-12-enclosure-stereo-integrity-12-sql-series","title":"Performance Optimized Sealed 12\" Enclosure | Stereo Integrity SQL-12","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(6, 182, 212, 0.2); border: 1px solid #06b6d4; color: #67e8f9; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #f0f9ff; }\n  .po-section h2 { color: #0e7490; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #06b6d4; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #0e7490; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #f0f9ff; border-left: 4px solid #06b6d4; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized | Stereo Integrity SQL 12\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 12\" Sealed Enclosure | Driver-Specific for the SQL 12 Series 2\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e1.0 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eDriver-Specific\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eDouble Baffle\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e20\" × 15\" × 13.625\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe Stereo Integrity SQL 12 Deserves a Box Built for It\u003c\/h2\u003e\n    \u003cp\u003eThe Stereo Integrity SQL 12 Series 2 is a serious high-power driver. 1000 watts RMS, 26mm one-way linear Xmax, 2.75\" copper voice coil on a split black anodized aluminum former, and enough motor force to move meaningful air in a properly sized sealed cabinet. Drop it in a generic box and you'll get loud bass. Drop it in a cabinet engineered around SI's published Thiele-Small parameters, with construction sized for the power level the SQL 12 delivers, and you'll hear what Nick Sowa's team built this driver to do.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Sealed 12 for Stereo Integrity SQL 12 is that cabinet. Internal volume, baffle thickness, mounting hardware, and construction methods are all chosen to extract the SQL 12's full mechanical and acoustic potential, and to hold together as a rigid structure at the power levels this driver is capable of.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003eThis enclosure is engineered specifically around the Stereo Integrity SQL 12 Series 2. The 1.0 cubic foot net volume matches the maximum sealed volume SI specifies for the SQL 12, where the driver's deep low-end extension fully develops with F3 points in single-digit territory.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWhy Performance Optimized Sits Where It Does\u003c\/h2\u003e\n    \u003cp\u003eThe Performance Optimized line is the bridge between our standard Performance Series and our top-tier Professional Series. Same Performance-tier construction quality, Langboard Elite MDF, V-groove and dado joinery, ShopSabre CNC routing, but the geometry of every panel is cut around one specific driver instead of a class of drivers. For the SQL 12 specifically, that also means doubled baffle stock at the mounting position to handle the driver's power capability.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003evs Performance Series\u003c\/h4\u003e\n        \u003cp\u003eStandard Performance Series boxes (P6 through P15) are built for universal driver fitment within a size class. Great if you want flexibility across multiple driver options. Performance Optimized takes the same construction foundation and locks the airspace and hardware to one specific driver.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003evs Professional Series\u003c\/h4\u003e\n        \u003cp\u003eProfessional Series uses extensive multi-layer baffles, triple-stacked construction, and a 2-year warranty for the most demanding builds. Performance Optimized delivers driver-specific engineering with double baffle construction at a more accessible price point with a 1-year warranty.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered Around the SQL 12's Parameters\u003c\/h2\u003e\n    \u003cp\u003eStereo Integrity specifies the SQL 12 Series 2 for sealed enclosures between 0.65 and 1.0 cubic feet. The Performance Optimized Sealed 12 delivers 1.0 cubic feet net, the maximum of SI's specified range, where the SQL's deep low-end extension characteristics fully develop. In this cabinet, the SQL 12 plays down to F3 points in single-digit territory, delivering the low-frequency response that makes SI's SQL Series unmatched at its price point.\u003c\/p\u003e\n    \u003ch3\u003eVolume Selection\u003c\/h3\u003e\n    \u003cp\u003e1.0 cubic foot net is the maximum of SI's recommended sealed volume range. Smaller volumes tighten Qtc and lose some low-end extension. Larger volumes fall outside SI's specification and compromise transient control. 1.0 cubic foot is where the SQL 12 delivers on its full low-end capability while staying inside the driver's engineered operating window.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eThe baffle is cut to the SQL 12's exact 11.33\" cutout specification and doubled to 1.5\" total thickness at the mounting position. The SQL 12's 7\" mounting depth leaves comfortable internal clearance inside the 13.625\" deep cabinet. 8\/32 threaded inserts are pressed into the doubled baffle stock for full-depth thread engagement and secure retention at high excursion levels.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Sized for Real Power\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eDouble Baffle Mounting Face\u003c\/h4\u003e\n        \u003cp\u003eThe mounting face uses a doubled 1.5\" total baffle thickness: two layers of 3\/4\" Langboard Elite MDF bonded together at the driver mounting position. Doubled baffle stock resists baffle flex and mounting screw pullout at the 1000-watt RMS power levels the SQL 12 delivers.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts Into Double Baffle\u003c\/h4\u003e\n        \u003cp\u003eThe baffle uses 8\/32 threaded inserts pressed into the doubled 1.5\" MDF backside, providing full-depth thread engagement for the supplied stainless steel mounting screws. No stripped pilot holes, no MDF damage from drywall screws, and secure retention at high excursion levels.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the cabinet fold into shape with maximum glue surface. Dado joints lock the doubled baffle and rear panel into the side walls, no fasteners visible from outside, no exposed end grain at joints.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. Tolerances that manual fabrication can't hold. Joints close cleanly, baffle concentricity stays accurate, and internal volume is consistent unit to unit. The doubled baffle at the mounting position is bonded under clamping pressure for a monolithic 1.5\" stock at the point where structural integrity matters most.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the front baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n    \u003cp\u003eAdd a Stereo Integrity SQL 12 Series 2 driver directly to your order in \u003cstrong\u003eDual 2-ohm or Dual 4-ohm\u003c\/strong\u003e impedance and \u003cstrong\u003ePaper or Carbon Fiber\u003c\/strong\u003e dust cap configurations. Already own your SQL 12? Order the enclosure box-only and drop in the driver you have.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the SQL 12 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe Stereo Integrity SQL 12 is a dual voice coil driver available in Dual 2-ohm (D2) or Dual 4-ohm (D4) configurations. The pre-wired terminal cup accepts either impedance version via 12-gauge OFC, with stainless steel input hardware.\u003c\/p\u003e\n    \u003cp\u003eA Dual 2-ohm SQL 12 wired in parallel presents a 1-ohm load. A Dual 2-ohm wired in series presents 4 ohms. A Dual 4-ohm SQL 12 wired in parallel presents 2 ohms, and wired in series presents 8 ohms. The SQL 12 is rated for 1000 watts RMS, aim for a clean, well-regulated amplifier delivering 750 to 1000 watts at your chosen impedance. At this power level, amplifier quality matters more than headline numbers, regulated power supply, low THD, and honest RMS ratings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eThe SQL 12, Engineered Correctly\u003c\/h2\u003e\n    \u003cp\u003eDriver-specific 1.0 cubic foot airspace, doubled baffle construction, V-groove and dado joinery, and Performance Series build quality sized for the SQL 12's 1000-watt RMS capability. The correct cabinet for a serious single 12 build.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Plush Black \/ Black","offer_id":43793847812185,"sku":"PO12-S SI BB","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Blue","offer_id":43793847844953,"sku":"PO12-S SI BBL","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ Red","offer_id":43793847877721,"sku":"PO12-S SI BR","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ White","offer_id":43793847910489,"sku":"PO12-S SI BW","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black \/ None","offer_id":43793847943257,"sku":"PO12-S SI B","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/performance-optimized-sealed-12-enclosure-stereo-integrity-12-sql-seriessubwoofer-enclosuresproline-x-6363168.png?v=1784976188"},{"product_id":"proline-x-p12-s-df-single-12-sealed-down-fire-subwoofer-enclosure","title":"Proline X P12-S DF | Single 12\" Sealed Down Fire Subwoofer Enclosure","description":"\u003cdiv class=\"df-wrap\"\u003e\n\u003cstyle\u003e\n.df-wrap{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;line-height:1.7;color:#cbd5e1 !important;}\n.df-wrap p{color:#cbd5e1 !important;margin:0 0 14px 0;}\n.df-wrap ul{margin:0 0 16px 0;padding-left:20px;}\n.df-wrap li{color:#cbd5e1 !important;margin-bottom:8px;}\n.df-wrap strong{color:#67e8f9 !important;}\n.df-wrap a{color:#22d3ee !important;font-weight:700;text-decoration:underline;}\n.df-hero{background:linear-gradient(135deg,#0f172a 0%,#0e7490 100%) 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#06b6d4 !important;border-radius:6px;padding:22px;}\n.df-card-label{display:inline-block;background:#06b6d4 !important;color:#04222b !important;font-size:0.68em;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:3px 10px;border-radius:3px;margin-bottom:10px;}\n.df-card h4{margin:0 0 10px 0;}\n.df-card-divider{height:2px;background:#06b6d4 !important;width:32px;margin-bottom:12px;border-radius:2px;}\n.df-card p{font-size:0.93em;color:#b6c4d6 !important;margin:0;line-height:1.65;}\n.df-card p strong{color:#67e8f9 !important;}\n.df-table{width:100% !important;border-collapse:collapse;margin:22px 0;font-size:0.94em;}\n.df-table th{background:#0e7490 !important;color:#ffffff !important;text-align:left;padding:11px 14px;font-weight:700;font-size:0.9em;letter-spacing:0.04em;text-transform:uppercase;border-bottom:1px solid #22384f !important;}\n.df-table td{padding:10px 14px;border-bottom:1px solid #22384f !important;color:#dbe4ef !important;background:#111c30 !important;}\n.df-table tr:nth-child(even) td{background:#1a2740 !important;}\n.df-table td:first-child{font-weight:600;color:#67e8f9 !important;width:34%;}\n.df-chartbox{display:block !important;width:100% !important;max-width:100% !important;margin:22px 0 !important;}\n.df-chart{display:block !important;width:100% !important;max-width:100% !important;height:auto !important;}\n.df-cta{background:linear-gradient(135deg,#0f172a 0%,#0e7490 100%) !important;border-radius:8px;padding:28px 26px;margin:32px 0 0 0;text-align:center;}\n.df-cta h3{color:#ffffff !important;margin:0 0 10px 0;}\n.df-cta p{color:#e2e8f0 !important;margin:0;font-size:0.97em;}\n.df-cta a{color:#a5f3fc !important;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n\u003cspan class=\"df-eyebrow\"\u003eProline X | Performance Down Fire\u003c\/span\u003e\n\u003ch2\u003eA Full Cubic Foot for a 12, Under Seven Inches Tall.\u003c\/h2\u003e\n\u003cp\u003eA shallow sealed enclosure for a single 12 inch subwoofer. The driver faces down, the top of the cabinet stays flat and usable, and the whole thing stands 8.5 inches tall with the feet installed. Most 12 inch boxes that hold this much air are twice this height.\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003e1.00 CU FT NET\u003c\/span\u003e\n\u003cspan class=\"df-badge\"\u003e6.75 IN CABINET\u003c\/span\u003e\n\u003cspan class=\"df-badge\"\u003e6 IN MAX DEPTH\u003c\/span\u003e\n\u003cspan class=\"df-badge\"\u003eDOWN FIRE OR FORWARD FIRE\u003c\/span\u003e\n\u003cspan class=\"df-badge\"\u003eFEET INCLUDED\u003c\/span\u003e\n\u003cspan class=\"df-badge\"\u003eBUILT IN TULLAHOMA, TN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-warn\"\u003e\n\u003cspan class=\"df-warn-label\"\u003eRead This First\u003c\/span\u003e\n\u003ch3\u003eCheck Your Driver Depth\u003c\/h3\u003e\n\u003cp\u003eMaximum driver mounting depth is \u003cstrong\u003e6 inches\u003c\/strong\u003e. That is workable for a good number of 12s, but plenty of high excursion 12 inch drivers need 7 inches or more, and those will not fit.\u003c\/p\u003e\n\u003cp\u003eCheck your driver's published mounting depth against 6 inches before you order. If it needs more, our forward fire P12-S is the better choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around a Constraint, Not Around a Driver\u003c\/h3\u003e\n\u003cp\u003ePerformance Down Fire enclosures are sized by driver diameter rather than cut for one specific subwoofer. This one takes any 12 inch driver with an \u003cstrong\u003e11.13 inch cutout\u003c\/strong\u003e and a mounting depth of 6 inches or less, and gives it \u003cstrong\u003e1.00 cubic foot of net airspace\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe design brief was height. Getting a full cubic foot into a 6.75 inch cabinet means the footprint has to grow, which is why this enclosure is 29.5 inches wide. Turning the driver toward the floor is what makes the height possible, because the baffle no longer has to face outward into the cargo area.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section-alt\"\u003e\n\u003ch3\u003eWhy Down Fire\u003c\/h3\u003e\n\u003cp\u003eTurning the driver toward the floor is not a styling decision. It changes what the enclosure does to the space around it and what the space around it can do to the enclosure.\u003c\/p\u003e\n\u003cdiv class=\"df-card-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003cspan class=\"df-card-label\"\u003eBoundary\u003c\/span\u003e\u003cdiv class=\"df-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eThe Floor Is Right There\u003c\/h4\u003e\n\u003cp\u003eThe driver radiates into a hard surface 1.75 inches away. In a trunk or cargo area that reinforcement, combined with cabin gain, is what makes a compact sealed box feel bigger than its airspace.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003cspan class=\"df-card-label\"\u003eProtection\u003c\/span\u003e\u003cdiv class=\"df-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eNothing Lands on the Cone\u003c\/h4\u003e\n\u003cp\u003eGroceries, tools, luggage, and dogs never touch a surround that is facing down. The most common cause of a damaged subwoofer in a daily driven vehicle is \u003cstrong\u003ecargo, not power\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003cspan class=\"df-card-label\"\u003ePackaging\u003c\/span\u003e\u003cdiv class=\"df-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eA Flat Top You Can Use\u003c\/h4\u003e\n\u003cp\u003eNo basket, no grille, no protrusion. The top of the cabinet is a flat carpeted surface, which in most vehicles means you get the cargo floor back instead of building around a box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003cspan class=\"df-card-label\"\u003eFlexibility\u003c\/span\u003e\u003cdiv class=\"df-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eNot Locked Into One Orientation\u003c\/h4\u003e\n\u003cp\u003eThe feet ship without predrilled holes on purpose. Mount them where your floor wants them, or leave them off entirely and run the cabinet \u003cstrong\u003eforward firing\u003c\/strong\u003e if your install calls for it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-clearance\"\u003e\n\u003cspan class=\"df-clearance-label\"\u003eFeet and Clearance\u003c\/span\u003e\n\u003ch3\u003eWhat Ships With the Enclosure\u003c\/h3\u003e\n\u003cp\u003eFour feet come standard with every Performance Down Fire enclosure. There is no upgrade tier and no separate accessory to buy.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eABS and carbon fiber composite\u003c\/strong\u003e, machined in house on the same equipment as our terminal cups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.75 inches of lift\u003c\/strong\u003e, which sets the working air gap between the baffle and the floor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo predrilled mounting holes\u003c\/strong\u003e, so the enclosure is never locked into a single orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall height with feet installed: 8.5 inches.\u003c\/strong\u003e Cabinet alone is 6.75 inches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"df-alert\"\u003e\u003cp\u003e\u003cstrong\u003eKeep the gap clear.\u003c\/strong\u003e The 1.75 inch space under the baffle is the air path, not empty room. A spare tire, a toolbox, or a folded moving blanket pressed against the opening will choke the output. Down fire systems that sound dead almost always have something jammed underneath them.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section-alt\"\u003e\n\u003ch3\u003eHow It Is Built\u003c\/h3\u003e\n\u003cdiv class=\"df-highlight\"\u003e\n\u003ch3\u003eCabinet\u003c\/h3\u003e\n\u003cp\u003eCut on our ShopSabre CNC from Langboard Elite MDF and assembled with V groove and dado joinery, with internal bracing and a single 0.75 inch baffle. Every panel meets on a machined joint rather than a butt seam, so the cabinet stays rigid and puts its energy into the driver instead of the panels.\u003c\/p\u003e\n\u003ch3\u003eMounting Hardware\u003c\/h3\u003e\n\u003cp\u003eThis is a generic enclosure sized by driver diameter, which means we do not know which subwoofer is going into it and cannot machine a bolt pattern for it. \u003cstrong\u003eThe baffle ships as a solid mounting flange and you drill your own mounting holes to match your driver.\u003c\/strong\u003e Threaded inserts are a feature of our Performance Optimized line, where the enclosure is cut for one named subwoofer and the bolt circle is drawn in CAD from the actual driver.\u003c\/p\u003e\n\u003cp\u003eThe MDF we use is dense. \u003cstrong\u003ePredrill your mounting holes.\u003c\/strong\u003e Driving screws straight into it without a pilot hole will split the baffle or strip the screw.\u003c\/p\u003e\n\u003ch3\u003eWiring and Damping\u003c\/h3\u003e\n\u003cp\u003eThe Proline X ABS and carbon fiber composite terminal cup is \u003cstrong\u003eside mounted\u003c\/strong\u003e, which keeps the connection accessible with the enclosure sitting on its feet. Pre wired with 12 gauge OFC. Polyfill is installed before the enclosure leaves the shop.\u003c\/p\u003e\n\u003ch3\u003eFinish\u003c\/h3\u003e\n\u003cp\u003eDark gray trunk liner standard, plush black available. The lasered acrylic badge mounts on the front face rather than the woofer face, so it stays visible in the down fire orientation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e29.5 inches wide by 14.5 inches deep by 6.75 inches tall\u003c\/strong\u003e, or 8.5 inches tall with the feet installed and the enclosure sitting in the down fire position.\u003c\/p\u003e\n\u003cdiv class=\"df-alert\"\u003e\u003cp\u003e\u003cstrong\u003eMeasure the width first.\u003c\/strong\u003e At 29.5 inches this is a full width enclosure, and that width is the price of getting a full cubic foot into a cabinet under 7 inches tall. Height is the spec that makes this design interesting, but width is the spec that decides whether it goes in your vehicle.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eEnclosure Performance\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is sized by driver diameter rather than cut for one subwoofer, so there is no single response curve for it. What the alignment does depends entirely on the driver you put in, and specifically on its total Q.\u003c\/p\u003e\n\u003cp\u003eThe table below models three driver profiles across the range you find in 12 inch subwoofers, calculated in 1.00 cubic foot. \u003cstrong\u003eThese are illustrative profiles, not published specifications for any particular subwoofer.\u003c\/strong\u003e Use them to understand the shape of the outcome, then run your own driver's real numbers.\u003c\/p\u003e\n\u003ctable class=\"df-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eDriver Profile (modeled)\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Q, Qts 0.40\u003cbr\u003e\u003cspan style=\"color:#94a3b8 !important;font-weight:400;font-size:0.9em;\"\u003eFs 30 Hz, Vas 1.30 cu ft\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.607\u003c\/td\u003e\n\u003ctd\u003e45.5 Hz\u003c\/td\u003e\n\u003ctd\u003e54.2 Hz\u003c\/td\u003e\n\u003ctd\u003eLow Q, just above Bessel. Rolls off early, thin on the bottom.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\n\u003cstrong style=\"color:#86efac !important;\"\u003eMid Q, Qts 0.50\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color:#86efac !important;font-weight:400;font-size:0.9em;\"\u003eFs 28 Hz, Vas 1.55 cu ft\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e0.798\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e44.7 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e40.2 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003eNear textbook. The target for this box.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh Q, Qts 0.65\u003cbr\u003e\u003cspan style=\"color:#94a3b8 !important;font-weight:400;font-size:0.9em;\"\u003eFs 26 Hz, Vas 1.80 cu ft\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.088\u003c\/td\u003e\n\u003ctd\u003e43.5 Hz\u003c\/td\u003e\n\u003ctd\u003e33.1 Hz\u003c\/td\u003e\n\u003ctd\u003eImpact alignment. Lift around 43 Hz, extends lower.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"df-chartbox\"\u003e\n\u003csvg class=\"df-chart\" width=\"1260\" height=\"420\" viewbox=\"0 0 1260 420\" preserveaspectratio=\"xMidYMid meet\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display:block !important;width:100% !important;max-width:100% !important;height:auto !important;\"\u003e\n\u003crect x=\"0\" y=\"0\" width=\"1260\" height=\"420\" fill=\"#0b1424\"\u003e\u003c\/rect\u003e\n\u003crect x=\"90\" y=\"50\" width=\"1080\" height=\"300\" fill=\"#111c30\" stroke=\"#2c405c\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"280\" y1=\"50\" x2=\"280\" y2=\"350\" stroke=\"#22384f\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"520\" y1=\"50\" x2=\"520\" y2=\"350\" stroke=\"#22384f\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"845\" y1=\"50\" x2=\"845\" y2=\"350\" stroke=\"#22384f\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"90\" y1=\"110\" x2=\"1170\" y2=\"110\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"90\" y1=\"155\" x2=\"1170\" y2=\"155\" stroke=\"#64748b\" stroke-width=\"1\" stroke-dasharray=\"6,5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"1178\" y=\"160\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-3 dB\u003c\/text\u003e\n\u003ctext x=\"1178\" y=\"115\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0 dB\u003c\/text\u003e\n\u003cpolyline points=\"90,335 112,323 135,312 158,301 180,290 202,280 225,269 247,259 270,249 292,240 315,230 337,221 360,213 382,205 405,197 428,189 450,182 472,176 495,170 518,164 540,159 562,154 585,150 608,146 630,142 652,139 675,136 698,133 720,131 742,129 765,127 787,125 810,123 832,122 855,121 877,120 900,119 923,118 945,117 968,116 990,116 1012,115 1035,115 1058,114 1080,114 1102,113 1125,113 1147,113 1170,113\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\n\u003cpolyline points=\"90,298 112,284 135,270 158,257 180,243 202,229 225,215 247,201 270,187 292,174 315,161 337,149 360,137 382,126 405,116 428,108 450,100 472,94 495,90 518,87 540,85 562,84 585,84 608,84 630,85 652,86 675,87 698,88 720,90 742,91 765,92 787,94 810,95 832,96 855,97 877,98 900,99 923,100 945,101 968,102 990,103 1012,103 1035,104 1058,104 1080,105 1102,105 1125,106 1147,106 1170,106\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\n\u003cpolyline points=\"90,317 112,304 135,292 158,279 180,267 202,255 225,243 247,231 270,220 292,208 315,198 337,187 360,177 382,168 405,160 428,152 450,144 472,138 495,132 518,127 540,123 562,120 585,117 608,114 630,112 652,111 675,110 698,109 720,108 742,108 765,107 787,107 810,107 832,107 855,107 877,107 900,107 923,107 945,107 968,108 990,108 1012,108 1035,108 1058,108 1080,108 1102,108 1125,109 1147,109 1170,109\" fill=\"none\" stroke=\"#22d3ee\" stroke-width=\"4.5\"\u003e\u003c\/polyline\u003e\n\u003ctext x=\"82\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e20\u003c\/text\u003e\n\u003ctext x=\"272\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e30\u003c\/text\u003e\n\u003ctext x=\"512\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e50\u003c\/text\u003e\n\u003ctext x=\"833\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e100\u003c\/text\u003e\n\u003ctext x=\"1158\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e200\u003c\/text\u003e\n\u003ctext x=\"560\" y=\"404\" font-size=\"17\" fill=\"#22d3ee\" font-family=\"sans-serif\" font-weight=\"700\"\u003eFrequency (Hz)\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"56\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e+4\u003c\/text\u003e\n\u003ctext x=\"58\" y=\"190\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-5\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"265\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-10\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"340\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-15\u003c\/text\u003e\n\u003ctext x=\"102\" y=\"36\" font-size=\"16\" fill=\"#67e8f9\" font-family=\"sans-serif\" font-weight=\"700\"\u003eModeled in 1.00 cu ft. Anechoic half-space, no cabin gain.\u003c\/text\u003e\n\u003cline x1=\"820\" y1=\"270\" x2=\"870\" y2=\"270\" stroke=\"#22d3ee\" stroke-width=\"4.5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"882\" y=\"276\" font-size=\"16\" fill=\"#e2e8f0\" font-family=\"sans-serif\" font-weight=\"700\"\u003eMid Q, Qts 0.50\u003c\/text\u003e\n\u003cline x1=\"820\" y1=\"302\" x2=\"870\" y2=\"302\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"882\" y=\"308\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003eLow Q 0.40 and High Q 0.65\u003c\/text\u003e\n\u003c\/svg\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-alert\"\u003e\u003cp\u003e\u003cstrong\u003eWhat the numbers are telling you.\u003c\/strong\u003e A 1.00 cubic foot sealed box wants a 12 in the middle of the Q range. Drop in a low Q driver and you get an alignment well below Butterworth that gives up real low end. Drop in a high Q driver and you get a lift in the upper bass with deeper extension, which is a legitimate choice if impact is what you want. There is no wrong answer here, but there is a wrong assumption, which is that any 12 will behave the same way in this box.\u003c\/p\u003e\u003c\/div\u003e\n\n\u003ch4\u003eAbout the Polyfill\u003c\/h4\u003e\n\u003cp\u003eThe 1.00 cubic foot figure is \u003cstrong\u003ephysical net airspace\u003c\/strong\u003e, measured after subtracting bracing and typical driver displacement. It is the number to enter into a modeling program. Polyfill is installed at the correct density before the enclosure ships, which typically makes a sealed box behave as though it were roughly 10 to 15 percent larger, so this cabinet tends to act like 1.10 to 1.15 cubic feet in practice. We quote the physical volume rather than the effective one, so the number you see is the number you can verify.\u003c\/p\u003e\n\u003cp\u003eRun your own driver's parameters through the \u003ca href=\"\/pages\/sealed-box-calculator\"\u003eSealed Box Calculator\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n\u003cp\u003eFull dimensions, cutout, mounting depth, and hardware details are listed under the \u003cstrong\u003eEnclosures\u003c\/strong\u003e tab.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eShallow, Down Firing, Built in Tennessee.\u003c\/h3\u003e\n\u003cp\u003eEvery Performance Down Fire enclosure is built to order in Tullahoma, Tennessee on our own CNC equipment. Questions on driver depth or whether your subwoofer suits this alignment, call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Dark Gray Trunkliner","offer_id":44465486233689,"sku":"P12-S DF G","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Plush Black","offer_id":44465486266457,"sku":"P12-S DF B","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/P12-SDF.png?v=1785896216"},{"product_id":"proline-x-po-12d-s-w-gus-dual-12-sealed-wedge-subwoofer-enclosure-built-for-resonix-gus-12","title":"Performance Optimized Wedge Sealed Dual 12\" Enclosure | ResoNix GUS-12","description":"\u003cdiv class=\"pow-wrap\"\u003e\n\u003cstyle\u003e\n.pow-wrap{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;line-height:1.7;color:#cbd5e1 !important;}\n.pow-wrap p{color:#cbd5e1 !important;margin:0 0 14px 0;}\n.pow-wrap strong{color:#d99058 !important;}\n.pow-wrap a{color:#c68a4a !important;font-weight:700;text-decoration:underline;}\n.pow-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%) !important;border-radius:8px;padding:32px 28px;margin-bottom:28px;}\n.pow-eyebrow{display:inline-block;color:#d99058 !important;font-size:0.72em;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;margin-bottom:10px;}\n.pow-hero h2{color:#ffffff !important;font-size:1.55em;font-weight:700;margin:0 0 12px 0;line-height:1.3;}\n.pow-hero p{color:#e2e8f0 !important;font-size:1.02em;margin:0;}\n.pow-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}\n.pow-badge{display:inline-block;background:rgba(184,115,51,0.18) !important;border:1px solid #b87333 !important;color:#eab784 !important;font-size:0.75em;font-weight:600;letter-spacing:0.04em;padding:5px 12px;border-radius:4px;}\n.pow-section{margin:30px 0;}\n.pow-section-alt{background:#111c30 !important;border:1px solid #3a2818 !important;border-radius:8px;padding:26px 24px;margin:30px 0;}\n.pow-wrap h3{color:#c68a4a !important;font-size:1.22em;font-weight:700;margin:0 0 14px 0;line-height:1.35;}\n.pow-wrap h4{color:#c68a4a !important;font-size:1.02em;font-weight:700;margin:0 0 10px 0;}\n.pow-highlight{background:#0f172a !important;border-left:4px solid #b87333 !important;padding:20px 22px;margin:28px 0;border-radius:0 6px 6px 0;}\n.pow-highlight h3{color:#c68a4a !important;margin:0 0 10px 0;font-size:1.1em;}\n.pow-highlight h3+h3{margin-top:18px;}\n.pow-highlight p{margin-bottom:10px;font-size:0.97em;color:#cbd5e1 !important;}\n.pow-highlight p:last-child{margin-bottom:0;}\n.pow-alert{background:#2f1c0d !important;border:1px solid #b87333 !important;border-radius:6px;padding:14px 18px;margin:22px 0;font-size:0.93em;}\n.pow-alert p{color:#eab784 !important;margin:0;}\n.pow-alert strong{color:#d99058 !important;}\n.pow-warn{background:#2b1a0b !important;border:2px solid #f59e0b !important;border-radius:8px;padding:20px 22px;margin:26px 0;}\n.pow-warn-label{display:inline-block;background:#f59e0b !important;color:#2b1a0b !important;font-size:0.68em;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:4px 11px;border-radius:3px;margin-bottom:12px;}\n.pow-warn h3{color:#fbbf24 !important;margin:0 0 10px 0;}\n.pow-warn p{color:#fde68a !important;margin:0 0 10px 0;}\n.pow-warn p:last-child{margin-bottom:0;}\n.pow-warn strong{color:#fbbf24 !important;}\n.pow-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:24px 0;}\n@media(max-width:600px){.pow-card-grid{grid-template-columns:1fr;}}\n.pow-card{background:#1a2740 !important;border:1px solid #4a3520 !important;border-top:3px solid #b87333 !important;border-radius:6px;padding:22px;}\n.pow-card-label{display:inline-block;background:#b87333 !important;color:#2a1608 !important;font-size:0.68em;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:3px 10px;border-radius:3px;margin-bottom:10px;}\n.pow-card h4{margin:0 0 10px 0;}\n.pow-card-divider{height:2px;background:#b87333 !important;width:32px;margin-bottom:12px;border-radius:2px;}\n.pow-card p{font-size:0.93em;color:#b6c4d6 !important;margin:0;line-height:1.65;}\n.pow-card p strong{color:#d99058 !important;}\n.pow-table{width:100% !important;border-collapse:collapse;margin:22px 0;font-size:0.94em;}\n.pow-table th{background:#8b5a2b !important;color:#ffffff !important;text-align:left;padding:11px 14px;font-weight:700;font-size:0.9em;letter-spacing:0.04em;text-transform:uppercase;border-bottom:1px solid #3a2818 !important;}\n.pow-table td{padding:10px 14px;border-bottom:1px solid #3a2818 !important;color:#dbe4ef !important;background:#111c30 !important;}\n.pow-table tr:nth-child(even) td{background:#1a2740 !important;}\n.pow-table td:first-child{font-weight:600;color:#d99058 !important;width:30%;}\n.pow-chartbox{display:block !important;width:100% !important;max-width:100% !important;margin:22px 0 !important;}\n.pow-chart{display:block !important;width:100% !important;max-width:100% !important;height:auto !important;}\n.pow-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%) !important;border-radius:8px;padding:28px 26px;margin:32px 0 0 0;text-align:center;}\n.pow-cta h3{color:#ffffff !important;margin:0 0 10px 0;}\n.pow-cta p{color:#e2e8f0 !important;margin:0;font-size:0.97em;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"pow-hero\"\u003e\n\u003cspan class=\"pow-eyebrow\"\u003eProline X | Performance Optimized Wedge\u003c\/span\u003e\n\u003ch2\u003eTwo GUS-12s, Each in Its Own 0.75 Cubic Feet.\u003c\/h2\u003e\n\u003cp\u003eA dual chamber sealed wedge cut for the ResoNix GUS-12 and nothing else. It sits in the trunk with the tall face against the back of the rear seat and the drivers firing rearward, using the length of the trunk instead of standing in the middle of it.\u003c\/p\u003e\n\u003cdiv class=\"pow-badges\"\u003e\n\u003cspan class=\"pow-badge\"\u003e0.75 CU FT NET PER DRIVER\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eDUAL CHAMBER\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eQTC 0.719\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eTRUNK MOUNT, REAR FIRING\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003e1600W RMS COMBINED\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eBUILT IN TULLAHOMA, TN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-warn\"\u003e\n\u003cspan class=\"pow-warn-label\"\u003eRead This First\u003c\/span\u003e\n\u003ch3\u003eThis Is Not a Down Fire Enclosure\u003c\/h3\u003e\n\u003cp\u003eThe wedge works in one orientation: tall face flat against the rear seat back, taper running out toward the trunk lid, drivers firing rearward. There are no feet, no baffle clearance gap, and \u003cstrong\u003eno down fire option on this cabinet\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is cut direct fit to the GUS-12 at a 283.6mm opening. \u003cstrong\u003eA standard 12 will not fit\u003c\/strong\u003e, and would not see the correct airspace if it did.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eBuilt Backward From One Published Number\u003c\/h3\u003e\n\u003cp\u003eResoNix specifies \u003cstrong\u003e0.75 cubic feet of net acoustic airspace\u003c\/strong\u003e per GUS-12, the volume that produces a maximally flat sealed alignment. Each chamber here is built at \u003cstrong\u003e0.80 cubic feet gross\u003c\/strong\u003e. Subtract the driver's 0.046 cubic feet of displacement and each GUS-12 sees 0.754 cubic feet.\u003c\/p\u003e\n\u003cp\u003eThat is not close to the target. That is the target. Total gross volume across both chambers is 1.60 cubic feet, 1.508 net acoustic.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section-alt\"\u003e\n\u003ch3\u003eWhy a Wedge\u003c\/h3\u003e\n\u003cdiv class=\"pow-card-grid\"\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003ePackaging\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eIt Uses the Trunk Lengthwise\u003c\/h4\u003e\n\u003cp\u003eTall face against the rear seat, tapering down as it runs out toward the lid. The cabinet claims the deep space at the base of the trunk and gives height back where the lid closes, so \u003cstrong\u003eyou keep usable trunk\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eLoading\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eThe Trunk Is Part of the System\u003c\/h4\u003e\n\u003cp\u003eFiring rearward means output loads into the trunk volume and reaches the cabin through the rear seat and deck. That path is what gives a trunk mounted subwoofer its weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eLocalization\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eHarder to Point At\u003c\/h4\u003e\n\u003cp\u003eBecause the drivers do not radiate straight into the cabin, the low end arrives through the structure rather than as a beam from behind your head, which makes \u003cstrong\u003ekeeping the stage forward\u003c\/strong\u003e easier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eSeparation\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eTwo Sealed Chambers\u003c\/h4\u003e\n\u003cp\u003eA full divider gives each GUS-12 its own airspace. \u003cstrong\u003eNeither cone loads against the other\u003c\/strong\u003e, so the pair stays predictable when both are working hard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eDual Chamber, Not Common Chamber\u003c\/h3\u003e\n\u003cp\u003eEach GUS-12 loads into its own sealed 0.80 cubic foot chamber, isolated by a full divider. With separate chambers, one driver's cone motion does not modulate the air load the other driver sees, so the two stay acoustically independent under hard excursion.\u003c\/p\u003e\n\u003cp\u003eThe GUS-12 is rated at \u003cstrong\u003e800 watts RMS each in its suggested enclosure\u003c\/strong\u003e, so this cabinet is built around a 1600 watt pair. A single Proline X terminal cup is side mounted and pre wired with 12 gauge OFC. This is a raw enclosure, so how you wire the drivers from that cup is your call.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section-alt\"\u003e\n\u003ch3\u003eHow It Is Built\u003c\/h3\u003e\n\u003cdiv class=\"pow-highlight\"\u003e\n\u003ch3\u003eCabinet\u003c\/h3\u003e\n\u003cp\u003eCut on our ShopSabre CNC from Langboard Elite MDF and assembled with \u003cstrong\u003edado and V groove joinery\u003c\/strong\u003e over 0.75 inch panels, with a \u003cstrong\u003edouble baffle at 1.5 inches\u003c\/strong\u003e and a full chamber divider. Angled panel meets are cut as V joints so the faces close on a machined bevel rather than a filled seam.\u003c\/p\u003e\n\u003ch3\u003eMounting Pattern\u003c\/h3\u003e\n\u003cp\u003eThe GUS-12 is in the Proline X CAD library, drawn from the manufacturer's own STEP file. The 283.6mm cutout and the nutsert locations are machined in the same operation from the same origin, so the holes cannot drift relative to each other. \u003cstrong\u003e8\/32 threaded inserts installed at both driver positions\u003c\/strong\u003e with stainless machine screws supplied, matched to the driver's 304mm bolt circle and its eight 6.5mm holes.\u003c\/p\u003e\n\u003ch3\u003eWiring and Damping\u003c\/h3\u003e\n\u003cp\u003eOne Proline X ABS and carbon fiber composite terminal cup, side mounted, pre wired with 12 gauge OFC to both driver positions. Polyfill is installed as a light wall lining to control internal reflections without altering the acoustic volume, because adding fill density would shift the alignment off the 0.75 target.\u003c\/p\u003e\n\u003ch3\u003eFinish\u003c\/h3\u003e\n\u003cp\u003ePlush black carpet with a black acrylic badge on the woofer face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eExternal dimensions are \u003cstrong\u003e30.25 inches wide by 15 inches tall\u003c\/strong\u003e, with depth running \u003cstrong\u003e13.5 inches at the base tapering to 8 inches at the top\u003c\/strong\u003e. Maximum driver mounting depth is 7.5 inches, comfortable for the GUS-12's 115.3mm requirement.\u003c\/p\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eFront clearance.\u003c\/strong\u003e ResoNix specifies 28mm minimum clearance in front of each GUS-12. At more than 20mm of Klippel verified one way excursion that is the operational envelope of the suspension, not optional headroom. Since the drivers fire rearward into the trunk, anything you load behind the box has to stay outside that envelope. Verify both positions independently.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eEnclosure Performance\u003c\/h3\u003e\n\u003cp\u003eCalculated from ResoNix's published Klippel measured parameters for the GUS-12 D4 coil: \u003cstrong\u003eFs 14.54 Hz, Qts 0.28, Vas 119.35 litres\u003c\/strong\u003e. Nothing here is estimated.\u003c\/p\u003e\n\u003ctable class=\"pow-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eNet Volume Per Driver\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003cth\u003eCharacter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.45 cu ft, ResoNix minimum\u003c\/td\u003e\n\u003ctd\u003e0.901\u003c\/td\u003e\n\u003ctd\u003e46.8 Hz\u003c\/td\u003e\n\u003ctd\u003e38.8 Hz\u003c\/td\u003e\n\u003ctd\u003ePunchier, more upper bass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e0.75 cu ft, this enclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e0.719\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e37.3 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e36.7 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003eMaximally flat. The target.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.50 cu ft, ResoNix maximum\u003c\/td\u003e\n\u003ctd\u003e0.547\u003c\/td\u003e\n\u003ctd\u003e28.4 Hz\u003c\/td\u003e\n\u003ctd\u003e38.9 Hz\u003c\/td\u003e\n\u003ctd\u003eBelow Butterworth, xmax limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"pow-chartbox\"\u003e\n\u003csvg class=\"pow-chart\" width=\"1260\" height=\"420\" viewbox=\"0 0 1260 420\" preserveaspectratio=\"xMidYMid meet\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display:block !important;width:100% !important;max-width:100% !important;height:auto !important;\"\u003e\n\u003crect x=\"0\" y=\"0\" width=\"1260\" height=\"420\" fill=\"#0b1424\"\u003e\u003c\/rect\u003e\n\u003crect x=\"90\" y=\"50\" width=\"1080\" height=\"300\" fill=\"#111c30\" stroke=\"#4a3520\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"210\" y1=\"50\" x2=\"210\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"379\" y1=\"50\" x2=\"379\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"592\" y1=\"50\" x2=\"592\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"881\" y1=\"50\" x2=\"881\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"90\" y1=\"110\" x2=\"1170\" y2=\"110\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"90\" y1=\"155\" x2=\"1170\" y2=\"155\" stroke=\"#64748b\" stroke-width=\"1\" stroke-dasharray=\"6,5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"1178\" y=\"160\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-3 dB\u003c\/text\u003e\n\u003ctext x=\"1178\" y=\"115\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0 dB\u003c\/text\u003e\n\u003cpolyline points=\"90,350 112,350 135,350 158,350 180,344 202,329 225,314 248,300 270,285 292,271 315,256 338,242 360,227 382,213 405,200 428,187 450,174 472,162 495,151 518,141 540,132 562,124 585,118 608,112 630,108 652,105 675,103 698,101 720,100 742,100 765,100 788,100 810,100 832,100 855,101 878,102 900,102 922,103 945,103 968,104 990,104 1012,105 1035,105 1058,106 1080,106 1102,106 1125,107 1148,107 1170,107\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\n\u003cpolyline points=\"90,301 112,289 135,278 158,267 180,257 202,247 225,237 248,228 270,219 292,210 315,202 338,195 360,187 382,181 405,174 428,169 450,163 472,158 495,154 518,149 540,146 562,142 585,139 608,136 630,133 652,131 675,129 698,127 720,125 742,124 765,122 788,121 810,120 832,119 855,118 878,117 900,116 922,116 945,115 968,115 990,114 1012,114 1035,113 1058,113 1080,113 1102,112 1125,112 1148,112 1170,112\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\n\u003cpolyline points=\"90,349 112,335 135,322 158,308 180,295 202,281 225,268 248,255 270,243 292,231 315,219 338,207 360,197 382,186 405,177 428,168 450,160 472,152 495,146 518,140 540,135 562,130 585,127 608,124 630,121 652,119 675,117 698,116 720,114 742,113 765,113 788,112 810,112 832,111 855,111 878,111 900,110 922,110 945,110 968,110 990,110 1012,110 1035,110 1058,110 1080,110 1102,110 1125,110 1148,110 1170,110\" fill=\"none\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/polyline\u003e\n\u003ctext x=\"202\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e20\u003c\/text\u003e\n\u003ctext x=\"371\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e30\u003c\/text\u003e\n\u003ctext x=\"584\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e50\u003c\/text\u003e\n\u003ctext x=\"869\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e100\u003c\/text\u003e\n\u003ctext x=\"1158\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e200\u003c\/text\u003e\n\u003ctext x=\"560\" y=\"404\" font-size=\"17\" fill=\"#c68a4a\" font-family=\"sans-serif\" font-weight=\"700\"\u003eFrequency (Hz)\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"56\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e+4\u003c\/text\u003e\n\u003ctext x=\"58\" y=\"190\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-5\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"265\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-10\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"340\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-15\u003c\/text\u003e\n\u003ctext x=\"102\" y=\"36\" font-size=\"16\" fill=\"#d99058\" font-family=\"sans-serif\" font-weight=\"700\"\u003eResoNix GUS-12, per driver. Anechoic half-space, no cabin gain.\u003c\/text\u003e\n\u003cline x1=\"800\" y1=\"255\" x2=\"850\" y2=\"255\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"862\" y=\"261\" font-size=\"16\" fill=\"#e2e8f0\" font-family=\"sans-serif\" font-weight=\"700\"\u003e0.75 cu ft, this enclosure\u003c\/text\u003e\n\u003cline x1=\"800\" y1=\"287\" x2=\"850\" y2=\"287\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"862\" y=\"293\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0.45 cu ft and 1.50 cu ft\u003c\/text\u003e\n\u003c\/svg\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eLook at the F3 column, not the Qtc column.\u003c\/strong\u003e Across the entire usable range, from ResoNix's minimum 0.45 up to their maximum 1.5 cubic feet, \u003cstrong\u003eF3 never leaves the 36 to 39 Hz band\u003c\/strong\u003e. Enclosure volume on this driver changes the shape of the response, not how deep it plays. That falls straight out of a 14.5 Hz Fs paired with a 0.28 Qts, which is an unusually low pair for a 12.\u003c\/p\u003e\u003c\/div\u003e\n\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eWhy not build bigger.\u003c\/strong\u003e ResoNix notes that at their 1.5 cubic foot maximum, the GUS-12 reaches xmax at 20 Hz with only 500 watts, well under its 800 watt rating. The larger box trades away power handling for damping and gains nothing on the bottom end. At 0.75 the driver takes its full rated power.\u003c\/p\u003e\u003c\/div\u003e\n\n\u003cp\u003eRun your own numbers with the \u003ca href=\"\/pages\/sealed-box-calculator\"\u003eSealed Box Calculator\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003cp\u003eFull dimensions, cutout, mounting depth, and hardware details are listed under the \u003cstrong\u003eEnclosures\u003c\/strong\u003e tab.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-cta\"\u003e\n\u003ch3\u003eCut for the GUS-12. Built in Tennessee.\u003c\/h3\u003e\n\u003cp\u003eEnclosure only. The ResoNix GUS-12 drivers are purchased separately from ResoNix Sound Solutions. Built to order in Tullahoma, Tennessee on our own CNC equipment. Questions on fitment or amplifier matching, call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Plush Black","offer_id":44493052379225,"sku":"PO 12D-S W GUS","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12D-SGUSFront.jpg?v=1787515047"},{"product_id":"resonix-gus-12-single-subwoofer-box","title":"Performance Optimized Wedge Sealed 12\" Enclosure | ResoNix GUS-12","description":"\u003cdiv class=\"pow-wrap\"\u003e\n\u003cstyle\u003e\n.pow-wrap{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;line-height:1.7;color:#cbd5e1 !important;}\n.pow-wrap p{color:#cbd5e1 !important;margin:0 0 14px 0;}\n.pow-wrap strong{color:#d99058 !important;}\n.pow-wrap a{color:#c68a4a !important;font-weight:700;text-decoration:underline;}\n.pow-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%) !important;border-radius:8px;padding:32px 28px;margin-bottom:28px;}\n.pow-eyebrow{display:inline-block;color:#d99058 !important;font-size:0.72em;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;margin-bottom:10px;}\n.pow-hero h2{color:#ffffff !important;font-size:1.55em;font-weight:700;margin:0 0 12px 0;line-height:1.3;}\n.pow-hero p{color:#e2e8f0 !important;font-size:1.02em;margin:0;}\n.pow-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}\n.pow-badge{display:inline-block;background:rgba(184,115,51,0.18) !important;border:1px solid #b87333 !important;color:#eab784 !important;font-size:0.75em;font-weight:600;letter-spacing:0.04em;padding:5px 12px;border-radius:4px;}\n.pow-section{margin:30px 0;}\n.pow-section-alt{background:#111c30 !important;border:1px solid #3a2818 !important;border-radius:8px;padding:26px 24px;margin:30px 0;}\n.pow-wrap h3{color:#c68a4a !important;font-size:1.22em;font-weight:700;margin:0 0 14px 0;line-height:1.35;}\n.pow-wrap h4{color:#c68a4a !important;font-size:1.02em;font-weight:700;margin:0 0 10px 0;}\n.pow-highlight{background:#0f172a !important;border-left:4px solid #b87333 !important;padding:20px 22px;margin:28px 0;border-radius:0 6px 6px 0;}\n.pow-highlight h3{color:#c68a4a !important;margin:0 0 10px 0;font-size:1.1em;}\n.pow-highlight h3+h3{margin-top:18px;}\n.pow-highlight p{margin-bottom:10px;font-size:0.97em;color:#cbd5e1 !important;}\n.pow-highlight p:last-child{margin-bottom:0;}\n.pow-alert{background:#2f1c0d !important;border:1px solid #b87333 !important;border-radius:6px;padding:14px 18px;margin:22px 0;font-size:0.93em;}\n.pow-alert p{color:#eab784 !important;margin:0;}\n.pow-alert strong{color:#d99058 !important;}\n.pow-warn{background:#2b1a0b !important;border:2px solid #f59e0b !important;border-radius:8px;padding:20px 22px;margin:26px 0;}\n.pow-warn-label{display:inline-block;background:#f59e0b !important;color:#2b1a0b !important;font-size:0.68em;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:4px 11px;border-radius:3px;margin-bottom:12px;}\n.pow-warn h3{color:#fbbf24 !important;margin:0 0 10px 0;}\n.pow-warn p{color:#fde68a !important;margin:0 0 10px 0;}\n.pow-warn p:last-child{margin-bottom:0;}\n.pow-warn strong{color:#fbbf24 !important;}\n.pow-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:24px 0;}\n@media(max-width:600px){.pow-card-grid{grid-template-columns:1fr;}}\n.pow-card{background:#1a2740 !important;border:1px solid #4a3520 !important;border-top:3px solid #b87333 !important;border-radius:6px;padding:22px;}\n.pow-card-label{display:inline-block;background:#b87333 !important;color:#2a1608 !important;font-size:0.68em;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:3px 10px;border-radius:3px;margin-bottom:10px;}\n.pow-card h4{margin:0 0 10px 0;}\n.pow-card-divider{height:2px;background:#b87333 !important;width:32px;margin-bottom:12px;border-radius:2px;}\n.pow-card p{font-size:0.93em;color:#b6c4d6 !important;margin:0;line-height:1.65;}\n.pow-card p strong{color:#d99058 !important;}\n.pow-table{width:100% !important;border-collapse:collapse;margin:22px 0;font-size:0.94em;}\n.pow-table th{background:#8b5a2b !important;color:#ffffff !important;text-align:left;padding:11px 14px;font-weight:700;font-size:0.9em;letter-spacing:0.04em;text-transform:uppercase;border-bottom:1px solid #3a2818 !important;}\n.pow-table td{padding:10px 14px;border-bottom:1px solid #3a2818 !important;color:#dbe4ef !important;background:#111c30 !important;}\n.pow-table tr:nth-child(even) td{background:#1a2740 !important;}\n.pow-table td:first-child{font-weight:600;color:#d99058 !important;width:30%;}\n.pow-chartbox{display:block !important;width:100% !important;max-width:100% !important;margin:22px 0 !important;}\n.pow-chart{display:block !important;width:100% !important;max-width:100% !important;height:auto !important;}\n.pow-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%) !important;border-radius:8px;padding:28px 26px;margin:32px 0 0 0;text-align:center;}\n.pow-cta h3{color:#ffffff !important;margin:0 0 10px 0;}\n.pow-cta p{color:#e2e8f0 !important;margin:0;font-size:0.97em;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"pow-hero\"\u003e\n\u003cspan class=\"pow-eyebrow\"\u003eProline X | Performance Optimized Wedge\u003c\/span\u003e\n\u003ch2\u003eOne GUS-12, Sitting in Exactly 0.75 Cubic Feet.\u003c\/h2\u003e\n\u003cp\u003eA single chamber sealed wedge cut for the ResoNix GUS-12 and nothing else. It sits in the trunk with the tall face against the back of the rear seat and the driver firing rearward, using the length of the trunk instead of standing in the middle of it.\u003c\/p\u003e\n\u003cdiv class=\"pow-badges\"\u003e\n\u003cspan class=\"pow-badge\"\u003e0.75 CU FT NET\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eSINGLE CHAMBER\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eQTC 0.719\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eTRUNK MOUNT, REAR FIRING\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003e800W RMS\u003c\/span\u003e\n\u003cspan class=\"pow-badge\"\u003eBUILT IN TULLAHOMA, TN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-warn\"\u003e\n\u003cspan class=\"pow-warn-label\"\u003eRead This First\u003c\/span\u003e\n\u003ch3\u003eThis Is Not a Down Fire Enclosure\u003c\/h3\u003e\n\u003cp\u003eThe wedge works in one orientation: tall face flat against the rear seat back, taper running out toward the trunk lid, driver firing rearward. There are no feet, no baffle clearance gap, and \u003cstrong\u003eno down fire option on this cabinet\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is cut direct fit to the GUS-12 at a 283.6mm opening. \u003cstrong\u003eA standard 12 will not fit\u003c\/strong\u003e, and would not see the correct airspace if it did.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eBuilt Backward From One Published Number\u003c\/h3\u003e\n\u003cp\u003eResoNix specifies \u003cstrong\u003e0.75 cubic feet of net acoustic airspace\u003c\/strong\u003e for the GUS-12, the volume that produces a maximally flat sealed alignment. This cabinet is built at \u003cstrong\u003e0.80 cubic feet gross\u003c\/strong\u003e. Subtract the driver's 0.046 cubic feet of displacement and the GUS-12 sees 0.754 cubic feet.\u003c\/p\u003e\n\u003cp\u003eThat is not close to the target. That is the target.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section-alt\"\u003e\n\u003ch3\u003eWhy a Wedge\u003c\/h3\u003e\n\u003cdiv class=\"pow-card-grid\"\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003ePackaging\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eIt Uses the Trunk Lengthwise\u003c\/h4\u003e\n\u003cp\u003eTall face against the rear seat, tapering down as it runs out toward the lid. The cabinet claims the deep space at the base of the trunk and gives height back where the lid closes, so \u003cstrong\u003eyou keep usable trunk\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eLoading\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eThe Trunk Is Part of the System\u003c\/h4\u003e\n\u003cp\u003eFiring rearward means output loads into the trunk volume and reaches the cabin through the rear seat and deck. That path is what gives a trunk mounted subwoofer its weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eLocalization\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eHarder to Point At\u003c\/h4\u003e\n\u003cp\u003eBecause the driver does not radiate straight into the cabin, the low end arrives through the structure rather than as a beam from behind your head, which makes \u003cstrong\u003ekeeping the stage forward\u003c\/strong\u003e easier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eFootprint\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003e22.5 Inches Across\u003c\/h4\u003e\n\u003cp\u003eA single 12 in a wedge is a small cabinet. It occupies just over a foot and a half of trunk width and \u003cstrong\u003e11 inches of depth at the floor\u003c\/strong\u003e, tapering to 5.5 at the top.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section-alt\"\u003e\n\u003ch3\u003eHow It Is Built\u003c\/h3\u003e\n\u003cdiv class=\"pow-highlight\"\u003e\n\u003ch3\u003eCabinet\u003c\/h3\u003e\n\u003cp\u003eCut on our ShopSabre CNC from Langboard Elite MDF and assembled with \u003cstrong\u003edado and V groove joinery\u003c\/strong\u003e over 0.75 inch panels, with a \u003cstrong\u003edouble baffle at 1.5 inches\u003c\/strong\u003e. Angled panel meets are cut as V joints so the faces close on a machined bevel rather than a filled seam.\u003c\/p\u003e\n\u003ch3\u003eMounting Pattern\u003c\/h3\u003e\n\u003cp\u003eThe GUS-12 is in the Proline X CAD library, drawn from the manufacturer's own STEP file. The 283.6mm cutout and the nutsert locations are machined in the same operation from the same origin, so the holes cannot drift relative to each other. \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws supplied, matched to the driver's 304mm bolt circle and its eight 6.5mm holes.\u003c\/p\u003e\n\u003ch3\u003eWiring and Damping\u003c\/h3\u003e\n\u003cp\u003eOne Proline X ABS and carbon fiber composite terminal cup, side mounted, pre wired with 12 gauge OFC. Polyfill is installed as a light wall lining to control internal reflections without altering the acoustic volume, because adding fill density would shift the alignment off the 0.75 target.\u003c\/p\u003e\n\u003ch3\u003eFinish\u003c\/h3\u003e\n\u003cp\u003ePlush black carpet with a black acrylic badge on the woofer face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eExternal dimensions are \u003cstrong\u003e22.5 inches wide by 15 inches tall\u003c\/strong\u003e, with depth running \u003cstrong\u003e11 inches at the base tapering to 5.5 inches at the top\u003c\/strong\u003e. Maximum driver mounting depth is 4.75 inches, which accommodates the GUS-12's 115.3mm requirement. The driver flush mounts into the machined recess and installs with the supplied stainless screws. No spacers, no modification.\u003c\/p\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eFront clearance.\u003c\/strong\u003e ResoNix specifies 28mm minimum clearance in front of the GUS-12. At more than 20mm of Klippel verified one way excursion that is the operational envelope of the suspension, not optional headroom. Since the driver fires rearward into the trunk, anything you load behind the box has to stay outside that envelope.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eEnclosure Performance\u003c\/h3\u003e\n\u003cp\u003eCalculated from ResoNix's published Klippel measured parameters for the GUS-12 D4 coil: \u003cstrong\u003eFs 14.54 Hz, Qts 0.28, Vas 119.35 litres\u003c\/strong\u003e. Nothing here is estimated.\u003c\/p\u003e\n\u003ctable class=\"pow-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eNet Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003cth\u003eCharacter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.45 cu ft, ResoNix minimum\u003c\/td\u003e\n\u003ctd\u003e0.901\u003c\/td\u003e\n\u003ctd\u003e46.8 Hz\u003c\/td\u003e\n\u003ctd\u003e38.8 Hz\u003c\/td\u003e\n\u003ctd\u003ePunchier, more upper bass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e0.75 cu ft, this enclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e0.719\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e37.3 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e36.7 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003eMaximally flat. The target.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.50 cu ft, ResoNix maximum\u003c\/td\u003e\n\u003ctd\u003e0.547\u003c\/td\u003e\n\u003ctd\u003e28.4 Hz\u003c\/td\u003e\n\u003ctd\u003e38.9 Hz\u003c\/td\u003e\n\u003ctd\u003eBelow Butterworth, xmax limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"pow-chartbox\"\u003e\n\u003csvg class=\"pow-chart\" width=\"1260\" height=\"420\" viewbox=\"0 0 1260 420\" preserveaspectratio=\"xMidYMid meet\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display:block !important;width:100% !important;max-width:100% !important;height:auto !important;\"\u003e\n\u003crect x=\"0\" y=\"0\" width=\"1260\" height=\"420\" fill=\"#0b1424\"\u003e\u003c\/rect\u003e\n\u003crect x=\"90\" y=\"50\" width=\"1080\" height=\"300\" fill=\"#111c30\" stroke=\"#4a3520\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"210\" y1=\"50\" x2=\"210\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"379\" y1=\"50\" x2=\"379\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"592\" y1=\"50\" x2=\"592\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"881\" y1=\"50\" x2=\"881\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"90\" y1=\"110\" x2=\"1170\" y2=\"110\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"90\" y1=\"155\" x2=\"1170\" y2=\"155\" stroke=\"#64748b\" stroke-width=\"1\" stroke-dasharray=\"6,5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"1178\" y=\"160\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-3 dB\u003c\/text\u003e\n\u003ctext x=\"1178\" y=\"115\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0 dB\u003c\/text\u003e\n\u003cpolyline points=\"90,350 112,350 135,350 158,350 180,344 202,329 225,314 248,300 270,285 292,271 315,256 338,242 360,227 382,213 405,200 428,187 450,174 472,162 495,151 518,141 540,132 562,124 585,118 608,112 630,108 652,105 675,103 698,101 720,100 742,100 765,100 788,100 810,100 832,100 855,101 878,102 900,102 922,103 945,103 968,104 990,104 1012,105 1035,105 1058,106 1080,106 1102,106 1125,107 1148,107 1170,107\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\n\u003cpolyline points=\"90,301 112,289 135,278 158,267 180,257 202,247 225,237 248,228 270,219 292,210 315,202 338,195 360,187 382,181 405,174 428,169 450,163 472,158 495,154 518,149 540,146 562,142 585,139 608,136 630,133 652,131 675,129 698,127 720,125 742,124 765,122 788,121 810,120 832,119 855,118 878,117 900,116 922,116 945,115 968,115 990,114 1012,114 1035,113 1058,113 1080,113 1102,112 1125,112 1148,112 1170,112\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\n\u003cpolyline points=\"90,349 112,335 135,322 158,308 180,295 202,281 225,268 248,255 270,243 292,231 315,219 338,207 360,197 382,186 405,177 428,168 450,160 472,152 495,146 518,140 540,135 562,130 585,127 608,124 630,121 652,119 675,117 698,116 720,114 742,113 765,113 788,112 810,112 832,111 855,111 878,111 900,110 922,110 945,110 968,110 990,110 1012,110 1035,110 1058,110 1080,110 1102,110 1125,110 1148,110 1170,110\" fill=\"none\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/polyline\u003e\n\u003ctext x=\"202\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e20\u003c\/text\u003e\n\u003ctext x=\"371\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e30\u003c\/text\u003e\n\u003ctext x=\"584\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e50\u003c\/text\u003e\n\u003ctext x=\"869\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e100\u003c\/text\u003e\n\u003ctext x=\"1158\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e200\u003c\/text\u003e\n\u003ctext x=\"560\" y=\"404\" font-size=\"17\" fill=\"#c68a4a\" font-family=\"sans-serif\" font-weight=\"700\"\u003eFrequency (Hz)\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"56\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e+4\u003c\/text\u003e\n\u003ctext x=\"58\" y=\"190\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-5\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"265\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-10\u003c\/text\u003e\n\u003ctext x=\"48\" y=\"340\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-15\u003c\/text\u003e\n\u003ctext x=\"102\" y=\"36\" font-size=\"16\" fill=\"#d99058\" font-family=\"sans-serif\" font-weight=\"700\"\u003eResoNix GUS-12. Anechoic half-space, no cabin gain.\u003c\/text\u003e\n\u003cline x1=\"800\" y1=\"255\" x2=\"850\" y2=\"255\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"862\" y=\"261\" font-size=\"16\" fill=\"#e2e8f0\" font-family=\"sans-serif\" font-weight=\"700\"\u003e0.75 cu ft, this enclosure\u003c\/text\u003e\n\u003cline x1=\"800\" y1=\"287\" x2=\"850\" y2=\"287\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"862\" y=\"293\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0.45 cu ft and 1.50 cu ft\u003c\/text\u003e\n\u003c\/svg\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eLook at the F3 column, not the Qtc column.\u003c\/strong\u003e Across the entire usable range, from ResoNix's minimum 0.45 up to their maximum 1.5 cubic feet, \u003cstrong\u003eF3 never leaves the 36 to 39 Hz band\u003c\/strong\u003e. Enclosure volume on this driver changes the shape of the response, not how deep it plays. That falls straight out of a 14.5 Hz Fs paired with a 0.28 Qts, which is an unusually low pair for a 12.\u003c\/p\u003e\u003c\/div\u003e\n\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eWhy not build bigger.\u003c\/strong\u003e ResoNix notes that at their 1.5 cubic foot maximum, the GUS-12 reaches xmax at 20 Hz with only 500 watts, well under its 800 watt rating. The larger box trades away power handling for damping and gains nothing on the bottom end. At 0.75 the driver takes its full rated power.\u003c\/p\u003e\u003c\/div\u003e\n\n\u003cp\u003eRun your own numbers with the \u003ca href=\"\/pages\/sealed-box-calculator\"\u003eSealed Box Calculator\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-section\"\u003e\n\u003cp\u003eFull dimensions, cutout, mounting depth, and hardware details are listed under the \u003cstrong\u003eEnclosures\u003c\/strong\u003e tab.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pow-cta\"\u003e\n\u003ch3\u003eCut for the GUS-12. Built in Tennessee.\u003c\/h3\u003e\n\u003cp\u003eEnclosure only. The ResoNix GUS-12 driver is purchased separately from ResoNix Sound Solutions. Built to order in Tullahoma, Tennessee on our own CNC equipment. Questions on fitment or amplifier matching, call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44493094191193,"sku":"PO 12-S W GUS","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWGUSFront.png?v=1786655075"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-image-dynamics-idq-12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Image Dynamics IDQ 12","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Image Dynamics IDQ 12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eSingle 12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design for the IDQ12 V4\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.4 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDriver-Specific\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e24\" × 15\" × 8.75\/14.2\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe IDQ12 V4 in a Trunk-Load Wedge\u003c\/h2\u003e\n\u003cp\u003eThe Image Dynamics IDQ12 V4 is one of the most respected SQ 12\" subwoofers on the market, 375W RMS, 14.5mm linear Xmax, 280 oz motor, field-replaceable cone assembly used in SQ competition for over a decade.\u003c\/p\u003e\n\u003cp\u003eWoofer mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity. Angled face on the opposite side tucks against the rear seat back.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.4 cu ft gross (approximately 1.3 cu ft net after driver displacement), inside Image Dynamics' specified sealed range of 0.65 to 1.8 cu ft, sitting well into the audiophile side where the driver's low-end extension fully develops.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eWoofer mounted on the vertical face at the back fires rearward into the trunk cavity. Angled face on the opposite side tucks against the rear seat back.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eMost factory rear seats lean ~20 degrees from vertical. The angled face (8.75\" top, 14.2\" bottom) matches that lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eThe vertical face (24\" × 15\") is where the IDQ12 mounts. Cone fires rearward toward the trunk lid.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eUses the trunk itself as acoustic extension for smoother, less-localized presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back. Cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered Around the IDQ12 V4's Parameters\u003c\/h2\u003e\n\u003cp\u003eImage Dynamics specifies the IDQ12 V4 for sealed enclosures between 0.65 cu ft (compact) and 1.8 cu ft (audiophile). The PO Wedge delivers 1.4 cu ft gross, approximately 1.3 net after driver displacement, well into the audiophile portion of ID's specified range where low-end extension fully develops.\u003c\/p\u003e\n\u003ch3\u003eVolume Selection\u003c\/h3\u003e\n\u003cp\u003e1.3 cu ft net is above ID's compact spec but below the maximum audiophile spec: the middle-upper portion where the IDQ12 delivers both extension and transient control.\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC-cut to the IDQ12's exact 10.937\" cutout. 5.91\" mounting depth fits comfortably. 8\/32 threaded inserts pressed into baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection for maximum glue surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n\u003cp\u003eThreaded inserts accept stainless steel mounting screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber terminal cup, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eDark Gray Trunkliner standard; Plush Black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, or White. Skip insert entirely for -$40.\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eAdd a Dual 2Ω or Dual 4Ω IDQ12 V4 driver directly to your order and we'll ship the loaded system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the IDQ12 V4 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eIDQ12 V4 is dual voice coil in D2 or D4. D2 parallel = 1Ω, D2 series = 4Ω. D4 parallel = 2Ω, D4 series = 8Ω. IDQ12 is rated 375W RMS. Aim for 300-400W clean at your chosen impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCNC-cut, assembled, and finished in Tullahoma, TN. 2-5 business day build window. 1-year limited warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eThe IDQ12 in a Trunk-Load Wedge\u003c\/h2\u003e\n\u003cp\u003eWedge geometry against the rear seat back, driver-specific 1.4 cu ft airspace tuned to the IDQ12 V4's audiophile spec range, Performance Series construction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44527877783641,"sku":"PO 12-S W IDQ BB","price":299.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871562841,"sku":"PO 12-S W IDQ B","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWIDQFront.png?v=1786740287"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-jl-audio-12w6v3-1","title":"Performance Optimized Wedge Sealed 12\" Enclosure | JL Audio 12W6v3","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(6, 182, 212, 0.2); border: 1px solid #06b6d4; color: #67e8f9; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #f0f9ff; }\n  .po-section h2 { color: #0e7490; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #06b6d4; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #0e7490; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #f0f9ff; border-left: 4px solid #06b6d4; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | JL Audio 12W6v3\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design for the JL Audio W6v3\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e1.105 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1.0 ft³ Net (JL Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e20\" × 15\" × 8\/13.5\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe JL Audio 12W6v3 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 12W6v3 is one of the most refined 12\" subwoofers in car audio, 600 watts RMS continuous, a DMA-optimized motor derived from the W7AE flagship platform, a mineral-filled polypropylene cone with rubber surround, and a rigid cast-alloy frame that resists flex under real power. JL Audio designed the W6v3 to deliver flagship-caliber SQ performance in compact sealed volumes, and JL specifies exactly 1.0 cubic feet net for the 12W6v3's optimum sealed alignment.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 12 for JL Audio W6 is engineered to hit that target precisely. 1.105 cubic feet gross internal volume minus the 12W6v3's 0.105 cubic foot driver displacement equals exactly 1.0 cubic foot net, the volume JL's engineers spec'd the W6v3 around, delivering the published F3 of 41.62 Hz and Qtc of 0.79. This isn't a \"close enough\" cabinet. It's JL's number, in a trunk-friendly wedge geometry.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e1.105 cubic feet gross = 1.0 cubic foot net after the 12W6v3's 0.105 cubic foot driver displacement. Exactly matches JL Audio's published optimum sealed volume for the 12W6v3 (Qtc 0.79, F3 41.62 Hz). The wedge geometry mounts the woofer on the vertical trunk-lid-side face, firing rearward into the trunk cavity.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n    \u003cp\u003eThis wedge is not a front-firing enclosure. The woofer is mounted on the vertical face that sits at the back of the box, closest to the trunk lid, and fires rearward into the trunk cavity. The angled face is on the opposite side of the box, the side that faces the front of the vehicle, and tucks against the rear seat back. Two different problems solved by one geometry.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n        \u003cp\u003eMost factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge (8\" at the top, 13.5\" at the bottom) matches that lean, tucking against the seat back with no wasted gap. The wedge fills the trunk shelf area behind the seat cleanly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n        \u003cp\u003eThe vertical face on the opposite side of the wedge (20\" wide × 15\" tall) is where the 12W6v3 mounts. The driver fires rearward toward the trunk lid, using the trunk cavity as an acoustic loading chamber. This is the classic SQ trunk-load install pattern.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n        \u003cp\u003eFiring the woofer into the trunk cavity rather than directly into the cabin uses the trunk itself as an extension of the acoustic system. Low frequencies transmit into the passenger cabin through the rear deck, seat back, and cabin boundaries, a smoother, less localized presentation than direct-firing setups.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n        \u003cp\u003eThe wedge tucks against the seat back where cargo can't be stored anyway. The bottom face sits flat and stable on the trunk floor. Cargo space in front of the wedge (toward the trunk lid) stays usable for daily driving.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered to JL Audio's Published Sealed Specification\u003c\/h2\u003e\n    \u003cp\u003eJL Audio publishes exactly one recommended sealed volume for the 12W6v3: 1.0 cubic foot net internal. In that alignment the driver delivers F3 of 41.62 Hz, Qtc of 0.79, and Fc of 45.99 Hz, the response curve JL's engineers targeted when they designed the driver. The Performance Optimized Wedge Sealed 12 delivers 1.105 cubic feet gross internal, which after subtracting the 12W6v3's 0.105 cubic foot displacement lands at exactly 1.0 cubic foot net. Not approximately. Exactly.\u003c\/p\u003e\n    \u003ch3\u003eWhy JL's Specification Matters\u003c\/h3\u003e\n    \u003cp\u003eSome drivers are forgiving about enclosure volume. The 12W6v3 isn't one of them. JL engineered this driver with a specific Qtc target in mind, and volume changes shift Qtc noticeably. Below 1.0 cubic feet Qtc climbs above 0.79, adding midbass lift while low-end extension drops. Above 1.0 the Qtc drops toward 0.707 and the midbass lift eases. 1.0 net is where the driver sounds like the driver JL designed. This cabinet delivers exactly that.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the 12W6v3's exact 11.02\" cutout specification. The 12W6v3's 7.52\" mounting depth plus the required 0.50\" pole vent clearance fits inside the cabinet, internal depth from the vertical baffle to the interior of the angled seat-side face ranges from 8\" at the top to 13.5\" at the bottom, providing ample clearance for the driver's motor and cooling requirements. 8\/32 threaded inserts are pressed into the baffle backside for secure driver retention.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Less panel resonance, tighter joints, and a longer service life under daily use at the 600 watts RMS the 12W6v3 handles.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the wedge cabinet fold into its angled shape with maximum glue surface. Dado joints lock the vertical woofer baffle and the angled seat-side panel into the side walls, no fasteners visible from outside, no exposed end grain at joints.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n        \u003cp\u003eThreaded inserts pressed into the vertical woofer baffle accept stainless steel mounting screws. No stripped pilot holes, no MDF damage from drywall screws, no surprises when the next driver upgrade rolls around.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. The angled seat-side panel requires precise CNC compound cuts to hit both the volume target and the mating angles between the top and bottom edges. Tolerances that manual fabrication can't reliably hold. Internal volume is verified on every unit to ensure the JL-spec 1.0 cubic foot net target is achieved.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n    \u003cp\u003eAdd a JL Audio 12W6v3-D4 driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Already own your 12W6v3? Order the enclosure box-only and drop in the driver you have.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the JL Audio 12W6v3 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 12W6v3 is a dual voice coil driver available in Dual 4-ohm configuration only. The pre-wired terminal cup accepts either wiring configuration via 12-gauge OFC, with stainless steel input hardware.\u003c\/p\u003e\n    \u003cp\u003eWired in parallel, the 12W6v3 presents a 2-ohm load. Wired in series, it presents 8 ohms. The 12W6v3 is rated for 600 watts RMS continuous, with JL Audio recommending amplifier power in the 200 to 600 watt RMS range. Aim for a clean, well-regulated amplifier delivering 300 to 500 watts RMS at your chosen impedance for balanced output and long-term reliability.\u003c\/p\u003e\n    \u003cp\u003eImportant: JL Audio explicitly recommends against using this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance. Use your amplifier's active low-pass filter to set the sub's upper cutoff, typically between 80 and 100 Hz for musical accuracy.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eJL's Spec Volume, in a Trunk-Load Wedge\u003c\/h2\u003e\n    \u003cp\u003eExactly 1.0 cubic foot net internal, JL Audio's published optimum sealed volume for the 12W6v3, in a trunk-friendly wedge geometry that fires the driver rearward into the trunk cavity. Precise driver-specific engineering for the W6 you already chose.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44528206741593,"sku":"PO 12-S W W6 BB","price":299.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871661145,"sku":"PO 12-S W W6 B","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWW6Front.png?v=1786844724"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-jl-audio-12w3v3","title":"Performance Optimized Wedge Sealed 12\" Enclosure | JL Audio 12W3v3","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(184, 115, 51, 0.2); border: 1px solid #b87333; color: #d99058; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #fef3e7; }\n  .po-section h2 { color: #8b5a2b; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #b87333; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #b87333; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #8b5a2b; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #fef3e7; border-left: 4px solid #b87333; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | JL Audio 12W3v3\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design for the JL Audio W3v3\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e1.32 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1.25 ft³ Net (JL 2Ω Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e23.75\" × 14.5\" × 8.25\/13.5\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe JL Audio 12W3v3 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 12W3v3 is JL's medium-power 12\" workhorse, 500 watts RMS continuous, 87.15 dB sensitivity, a DMA-optimized motor, a mineral-filled polypropylene cone, and an NBR rubber surround engineered for long service life. Available in Single 2-ohm (12W3v3-2), Single 4-ohm (12W3v3-4), and Single 8-ohm (12W3v3-8) configurations to match your amplifier, this driver delivers world-class sound quality in a compact sealed cabinet that fits real trunks.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 12 for JL Audio W3 is engineered to hit JL's exact 12W3v3-2 sealed specification. 1.32 cubic feet gross internal volume minus the 12W3v3's 0.071 cubic foot driver displacement equals 1.249 cubic feet net. Matching JL's published 1.250 cubic foot sealed spec for the 2-ohm variant. In that alignment, the driver delivers F3 of 41.8 Hz and Qtc of 0.80, a warm, impactful bass character that plays beautifully in a daily-driver system.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e1.32 cubic feet gross = 1.249 cubic feet net after the 12W3v3's 0.071 cubic foot driver displacement. Exact match to JL Audio's published sealed spec for the 12W3v3-2 (Qtc 0.80, F3 41.8 Hz). The 12W3v3-4 and -8 variants also fit this cabinet with slightly relaxed alignments. The wedge geometry mounts the woofer on the vertical trunk-lid-side face, firing rearward into the trunk cavity.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n    \u003cp\u003eThis wedge is not a front-firing enclosure. The woofer is mounted on the vertical face that sits at the back of the box, closest to the trunk lid, and fires rearward into the trunk cavity. The angled face is on the opposite side of the box, the side that faces the front of the vehicle, and tucks against the rear seat back. Two different problems solved by one geometry.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n        \u003cp\u003eMost factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge (8.25\" at the top, 13.5\" at the bottom) matches that lean, tucking against the seat back with no wasted gap. The wedge fills the trunk shelf area behind the seat cleanly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n        \u003cp\u003eThe vertical face on the opposite side of the wedge (23.75\" wide × 14.5\" tall) is where the 12W3v3 mounts. The driver fires rearward toward the trunk lid, using the trunk cavity as an acoustic loading chamber. This is the classic SQ trunk-load install pattern.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n        \u003cp\u003eFiring the woofer into the trunk cavity rather than directly into the cabin uses the trunk itself as an extension of the acoustic system. Low frequencies transmit into the passenger cabin through the rear deck, seat back, and cabin boundaries, a smoother, less localized presentation than direct-firing setups.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n        \u003cp\u003eThe wedge tucks against the seat back where cargo can't be stored anyway. The bottom face sits flat and stable on the trunk floor. Cargo space in front of the wedge (toward the trunk lid) stays usable for daily driving.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered to JL Audio's Published Sealed Specification\u003c\/h2\u003e\n    \u003cp\u003eJL Audio publishes different sealed enclosure specs for each impedance variant of the 12W3v3. The 12W3v3-2 wants 1.250 cubic feet net for its optimum sealed alignment (F3 41.8 Hz, Qtc 0.80). The 12W3v3-4 wants 1.125 cubic feet net. The 12W3v3-8 uses similar sealed sizing to the -2. This cabinet is engineered specifically to hit the 12W3v3-2's spec exactly: 1.32 cubic feet gross minus the 0.071 cubic foot driver displacement equals 1.249 cubic feet net. Essentially exact match to JL's 1.250 spec for the 2-ohm variant.\u003c\/p\u003e\n    \u003ch3\u003eWhat the JL 2Ω Spec Delivers\u003c\/h3\u003e\n    \u003cp\u003eJL engineered the 12W3v3-2 for a Qtc of 0.80 in a 1.25 cubic foot sealed enclosure. That's a higher Qtc than the traditional \"flat\" 0.707 alignment, giving the driver a warm, impactful, midbass-forward bass character that works exceptionally well in daily-driven cars where cabin gain fills in the low end. If you want a subwoofer that sounds punchy and full without needing to run high volume levels to feel it, this alignment is perfect. Listeners looking for a flatter, more analytical alignment can use the 12W3v3-4 in this cabinet instead, the -4 in a slightly-larger-than-spec 1.249 volume trends toward Qtc 0.83, still on the warm side but flatter than the -2.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the 12W3v3's exact 11.0625\" cutout specification. The 12W3v3's 6.65\" mounting depth fits comfortably inside the cabinet, internal depth from the vertical baffle to the interior of the angled seat-side face ranges from 8.25\" at the top to 13.5\" at the bottom, providing ample clearance for the driver's motor and cooling requirements. 8\/32 threaded inserts are pressed into the baffle backside for secure driver retention.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Less panel resonance, tighter joints, and a longer service life under daily use at the 500 watts RMS the 12W3v3 handles.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the wedge cabinet fold into its angled shape with maximum glue surface. Dado joints lock the vertical woofer baffle and the angled seat-side panel into the side walls, no fasteners visible from outside, no exposed end grain at joints.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n        \u003cp\u003eThreaded inserts pressed into the vertical woofer baffle accept stainless steel mounting screws. No stripped pilot holes, no MDF damage from drywall screws, no surprises when the next driver upgrade rolls around.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. The angled seat-side panel requires precise CNC compound cuts to hit both the volume target and the mating angles between the top and bottom edges. Tolerances that manual fabrication can't reliably hold. Internal volume is verified on every unit to ensure the JL-spec 1.25 cubic foot net target is achieved.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n    \u003cp\u003eAdd a JL Audio 12W3v3-2 (2-ohm) or 12W3v3-4 (4-ohm) driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. This cabinet is optimized for the 2-ohm variant's spec. Already own your 12W3v3? Order the enclosure box-only and drop in the driver you have.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the JL Audio 12W3v3 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 12W3v3 is a single voice coil driver available in three impedance versions. The pre-wired terminal cup accepts the two-conductor connection via 12-gauge OFC, with stainless steel input hardware.\u003c\/p\u003e\n    \u003cp\u003eThe 12W3v3-2 (Single 2-ohm) presents a 2-ohm load directly to your amplifier, the most common choice, delivering the highest power output from most modern class D monoblocks. The 12W3v3-4 (Single 4-ohm) presents a 4-ohm load. Easier on both amp and driver for daily use. The 12W3v3-8 (Single 8-ohm) presents an 8-ohm load, rare, used mainly when running high-voltage amp bridges or matched with class AB amplifiers.\u003c\/p\u003e\n    \u003cp\u003eThe 12W3v3 is rated for 500 watts RMS continuous, with JL Audio recommending amplifier power in the 150 to 500 watt RMS range. Aim for a clean, well-regulated amplifier delivering 300 to 500 watts RMS at your chosen impedance for balanced output and long-term reliability.\u003c\/p\u003e\n    \u003cp\u003eImportant: JL Audio explicitly recommends against using this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance. Use your amplifier's active low-pass filter to set the sub's upper cutoff, typically between 80 and 100 Hz for musical accuracy.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eJL's Spec Volume, in a Trunk-Load Wedge\u003c\/h2\u003e\n    \u003cp\u003e1.25 cubic feet net internal, JL Audio's published optimum sealed volume for the 12W3v3-2, in a trunk-friendly wedge geometry that fires the driver rearward into the trunk cavity. Precise driver-specific engineering for the W3 you already chose.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44528229580889,"sku":"PO 12-S W W3 BB","price":289.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871628377,"sku":"PO 12-S W W3 B","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWW3Front.png?v=1786844895"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-jl-audio-12tw3-d4","title":"Performance Optimized Wedge Sealed 12\" Enclosure | JL Audio 12TW3","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(184, 115, 51, 0.2); border: 1px solid #b87333; color: #d99058; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #fef3e7; }\n  .po-section h2 { color: #8b5a2b; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #b87333; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #b87333; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #8b5a2b; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #fef3e7; border-left: 4px solid #b87333; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | JL Audio 12TW3\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 12\" Shallow-Mount Sealed Wedge | Rear-Firing Trunk-Load for JL's Thin-Line 12TW3-D4\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e0.83 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e0.80 ft³ Net (JL Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eUltra-Shallow Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e28.25\" × 14.5\" × 4.5\/9.89\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe JL Audio 12TW3-D4 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 12TW3-D4 is JL's shallow-mount 12\" thin-line subwoofer, engineered around JL's patented concentric tube cone architecture to deliver full-size 12\" cone area from a driver that measures just 3.5\" mounting depth. This isn't a compromise driver, the TW3's engineering actually enables greater excursion than the standard W3v3, using a compressed motor structure placed forward inside the cone body itself. 400 watts RMS continuous with a mica-filled polypropylene cone, rubber surround, cast alloy basket, and JL's tab-ear mounting design for maximum cone area within its footprint.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 12 for JL Audio TW3 is engineered to hit JL's exact published sealed specification. 0.83 cubic feet gross internal volume minus the 12TW3-D4's 0.029 cubic foot driver displacement equals 0.801 cubic feet net, essentially exact match to JL's 0.80 cubic foot published sealed spec, delivering deep, controlled bass response tuned by JL's own engineers.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e0.83 cubic feet gross = 0.801 cubic feet net after the 12TW3-D4's 0.029 cubic foot driver displacement. Essentially exact match to JL Audio's published optimum sealed volume for the 12TW3-D4. The ultra-shallow wedge geometry, just 4.5\" deep at the top rising to 9.89\" at the bottom, is engineered around the TW3's 3.5\" mounting depth, mounting the driver on the vertical trunk-lid-side face and firing rearward into the trunk cavity.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWhy the TW3 Exists (and Why This Wedge Fits Where Others Can't)\u003c\/h2\u003e\n    \u003cp\u003eThe JL 12TW3-D4 was engineered for one specific mission: full-size 12\" bass in vehicles and configurations where a standard 12\" enclosure simply won't fit. Pickup trucks with cramped extended cabs. Sports cars with shallow parcel-shelf areas. Sedans with low decklid clearance. Vans and SUVs where cargo floor height is critical. Anywhere the front-to-back depth needed for a regular 12\" is unavailable.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 12 for JL Audio TW3 solves the same problem in wedge form. The vertical trunk-lid-side face where the woofer mounts is only 4.5\" deep at the top of the box, tapering to 9.89\" at the bottom. That means the top of the cabinet fits under low parcel shelves and rear seat backs that a full-depth wedge could never clear. Combined with the TW3's own 3.5\" mounting depth, this is one of the most vehicle-friendly full-size 12\" enclosures available.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n        \u003cp\u003eMost factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge (4.5\" at top, 9.89\" at bottom) matches that lean, tucking against the seat back with no wasted gap. The ultra-shallow top face slides under decklids and parcel shelves that block deeper cabinets.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n        \u003cp\u003eThe vertical face on the opposite side of the wedge (28.25\" wide × 14.5\" tall) is where the 12TW3-D4 mounts. The driver fires rearward toward the trunk lid, using the trunk cavity as an acoustic loading chamber, the classic SQ trunk-load install pattern, now available in shallow-mount format.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n        \u003cp\u003eFiring the woofer into the trunk cavity rather than directly into the cabin uses the trunk itself as an extension of the acoustic system. Low frequencies transmit into the passenger cabin through the rear deck, seat back, and cabin boundaries. Smoother than direct-firing setups.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eWide, Shallow Footprint\u003c\/h4\u003e\n        \u003cp\u003e28.25\" wide by 14.5\" tall by 4.5-9.89\" deep. Substantially wider than a standard 12\" cabinet but far shallower. Ideal for the space behind rear seat backs in trucks, under parcel shelves in sedans and coupes, and low-profile SUV cargo installations where depth is the limiting factor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered to JL Audio's Published Sealed Specification\u003c\/h2\u003e\n    \u003cp\u003eJL Audio publishes exactly one recommended sealed enclosure volume for the 12TW3-D4: 0.80 cubic feet net internal. This spec is JL's own engineered target for the driver, the volume where the TW3's motor, suspension, and cone assembly deliver the balanced sealed response their engineers designed the driver for. The Performance Optimized Wedge Sealed 12 delivers 0.83 cubic feet gross internal, which after subtracting the 12TW3-D4's 0.029 cubic foot displacement lands at 0.801 cubic feet net. Right on JL's published spec.\u003c\/p\u003e\n    \u003ch3\u003eWhat the JL Spec Delivers\u003c\/h3\u003e\n    \u003cp\u003eThe 12TW3-D4 in its JL-spec 0.80 cu ft sealed alignment delivers deep, controlled, musically accurate bass with excellent transient response, the character JL's engineers targeted. Because the TW3 was engineered from the ground up to work in small enclosures, this isn't a case of a driver being crammed into an undersized box for space reasons. The 0.80 cu ft target is where the driver sounds its best, not just where it fits.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry and Driver Fitment\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the 12TW3-D4's exact 11.625\" cutout specification. The 12TW3-D4's 3.5\" mounting depth fits inside the cabinet with clearance to spare. Internal depth from the vertical baffle to the interior of the angled seat-side face ranges from ~3.75\" at the top to ~9.14\" at the bottom (after accounting for 3\/4\" MDF panel thickness), with the driver's mounting position at cabinet center providing over 5\" of clearance behind the motor. JL's no-pole-vent motor design permits mounting close to the rear wall of an enclosure. Critical for shallow-cabinet applications like this one.\u003c\/p\u003e\n    \u003ch3\u003eTab-Ear Mounting\u003c\/h3\u003e\n    \u003cp\u003eThe TW3 uses JL's tab-ear mounting design, three plastic mounting ears extending outward from the driver frame, rather than a continuous perimeter flange. This maximizes cone area within the mounting footprint but requires specific mounting hardware: use #8 or #10 pan-head screws (NOT tapered\/countersunk), since countersunk screws can wedge the plastic ears outward under vibration and crack them over time. The Proline X wedge baffle is pre-drilled and threaded-insert equipped for the TW3's tab pattern with pan-head hardware included.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Especially important in a shallow cabinet where panel-to-air ratio is high. Panel resonance would color the sound more than in a deeper box, and Langboard's density minimizes that risk.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the wedge cabinet fold into its angled shape with maximum glue surface. Dado joints lock the vertical woofer baffle and the ultra-shallow angled seat-side panel into the side walls, no fasteners visible from outside, no exposed end grain at joints.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTW3-Specific Baffle Machining\u003c\/h4\u003e\n        \u003cp\u003eThe 11.625\" cutout is CNC-machined with the tab-ear mounting positions pre-drilled and 8\/32 threaded inserts pressed into the baffle backside. #8 pan-head stainless steel screws included, not countersunk, per JL's mounting requirements for the tab-ear design.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. The shallow wedge geometry requires precise CNC compound cuts, the 4.5\" top-face-to-9.89\" bottom-face depth transition over 14.5\" of height must be dimensionally perfect to hit both the volume target and the seat-side mating angles. Internal volume is verified on every unit to ensure the JL-spec 0.80 cubic foot net target is achieved.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n    \u003cp\u003eAdd a JL Audio 12TW3-D4 driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Note that the TW3 series is offered by JL Audio in only one impedance version. Dual 4-ohm. Already own your 12TW3-D4? Order the enclosure box-only and drop in the driver you have.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the JL Audio 12TW3-D4 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 12TW3-D4 is a dual-voice-coil driver with both coils at 4 ohms. This gives you two standard wiring options via the pre-wired terminal cup.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eParallel wiring (2 ohm total load):\u003c\/strong\u003e Both voice coils in parallel presents a 2-ohm load to your amplifier, the higher-output configuration, ideal for modern class D monoblocks stable at 2 ohms. Recommended for maximizing SPL and power transfer from typical 300-500 watt monoblock amps.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eSeries wiring (8 ohm total load):\u003c\/strong\u003e Both voice coils in series presents an 8-ohm load, used mainly with bridged high-voltage amp configurations, class AB amplifiers, or multi-driver installs where impedance summing matters.\u003c\/p\u003e\n    \u003cp\u003eThe 12TW3-D4 is rated for 400 watts RMS continuous with a 100-400 watt RMS recommended amplifier range. Aim for a well-regulated monoblock delivering 300-400 watts RMS at your chosen impedance for the best combination of headroom, output, and long-term reliability. Set your amplifier's active low-pass filter between 80 and 100 Hz for musical accuracy.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eJL's Spec Volume for the Shallow 12, in a Wedge That Actually Fits\u003c\/h2\u003e\n    \u003cp\u003e0.80 cubic feet net internal, JL Audio's published optimum sealed volume for the 12TW3-D4, in an ultra-shallow wedge geometry (4.5\" at the top) engineered around the TW3's 3.5\" mounting depth. Full-size 12\" cone area, real JL Audio bass, in vehicles where a standard 12\" enclosure simply won't fit.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44528237609049,"sku":"PO 12-S W TW3 BB","price":289.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871595609,"sku":"PO 12-S W TW3 B","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWTW3Front.png?v=1786844642"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-rockford-fosgate-t1d212","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Rockford Fosgate T1D212","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; 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color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #b87333; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #8b5a2b; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #fef3e7; border-left: 4px solid #b87333; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Rockford Fosgate T1D212\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design for the Rockford Fosgate T1 Power Series\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e1.55 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1.25 ft³ Net (RF Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e24.4\" × 15\" × 9.4\/14.85\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe Rockford Fosgate T1D212 in RF's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe Rockford Fosgate T1D212 is the current-generation Power T1 series 12-inch subwoofer, engineered around Rockford's patented VAST (Vertical Attach Surround Technique) technology that increases effective radiating cone area by up to 25% over conventional 12\" drivers. 800 watts RMS CEA-2031 compliant power handling, dual 2-ohm voice coils, 16mm one-way Xmax, a rigid die-cast aluminum FlexFit basket, Kevlar fiber reinforced paper cone, anodized aluminum voice coil former for superior heat dissipation, and Klippel-verified design tolerances. This is Rockford's flagship SPL-capable 12\" driver.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 12 for Rockford Fosgate T1 is engineered to hit RF's exact published sealed specification. 1.55 cubic feet gross internal volume minus the T1D212's 0.304 cubic foot total driver displacement lands at 1.246 cubic feet net, essentially exact match to Rockford's 1.25 cubic foot published sealed spec, delivering the alignment RF's engineers designed the T1D212 to operate in.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e1.55 cubic feet gross = 1.246 cubic feet net after the T1D212's 0.304 cubic foot total driver displacement. Essentially exact match to Rockford Fosgate's published 1.25 cubic foot sealed spec for the T1D212. The wedge geometry mounts the woofer on the vertical trunk-lid-side face, firing rearward into the trunk cavity. Classic SQ trunk-load pattern applied to Rockford's SPL-capable T1 platform.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n    \u003cp\u003eThis wedge is not a front-firing enclosure. The woofer is mounted on the vertical face that sits at the back of the box, closest to the trunk lid, and fires rearward into the trunk cavity. The angled face is on the opposite side of the box, the side that faces the front of the vehicle, and tucks against the rear seat back. Two different problems solved by one geometry.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n        \u003cp\u003eMost factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge (9.4\" at the top, 14.85\" at the bottom) matches that lean, tucking against the seat back with no wasted gap. The wedge fills the trunk shelf area behind the seat cleanly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n        \u003cp\u003eThe vertical face on the opposite side of the wedge (24.4\" wide × 15\" tall) is where the T1D212 mounts. The driver fires rearward toward the trunk lid, using the trunk cavity as an acoustic loading chamber. This is the classic SQ trunk-load install pattern applied to Rockford's SPL-oriented T1 series.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n        \u003cp\u003eFiring the woofer into the trunk cavity rather than directly into the cabin uses the trunk itself as an extension of the acoustic system. Low frequencies transmit into the passenger cabin through the rear deck, seat back, and cabin boundaries, a smoother, less-localized presentation than direct-firing setups, and particularly effective for a high-output driver like the T1D212 where cabin standing waves need control.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n        \u003cp\u003eThe wedge tucks against the seat back where cargo can't be stored anyway. The bottom face sits flat and stable on the trunk floor. Cargo space in front of the wedge (toward the trunk lid) stays usable for daily driving.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered to Rockford Fosgate's Published Sealed Specification\u003c\/h2\u003e\n    \u003cp\u003eRockford Fosgate publishes exactly 1.25 cubic feet net internal as the recommended sealed enclosure volume for the T1D212. This spec is RF's own engineered target, the volume where the T1's motor structure, VAST-enhanced cone assembly, and progressive-roll spider suspension deliver the sealed response their Klippel-verified design targets. The Performance Optimized Wedge Sealed 12 delivers 1.55 cubic feet gross internal, which after subtracting the T1D212's total driver displacement of 0.304 cubic feet lands at 1.246 cubic feet net. Right on RF's published spec.\u003c\/p\u003e\n    \u003ch3\u003eSealed vs. Ported for the T1D212\u003c\/h3\u003e\n    \u003cp\u003eThe T1D212 is a versatile driver that Rockford supports both sealed (1.25 cu ft) and vented (1.75 cu ft) applications for. Sealed operation delivers the tightest, most controlled bass response, ideal for musical accuracy, sound quality installs, and daily-driven vehicles where cabin gain rewards a slightly warmer alignment. If you're building a maximum-SPL system or want the peak-tuned resonance boost of a ported enclosure, RF's 1.75 cu ft vented spec is worth considering as a separate build. This cabinet is engineered specifically for RF's sealed alignment, the SQ-oriented, musically accurate side of the T1D212's capabilities.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry and Driver Fitment\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the T1D212's exact 11.25\" cutout specification. The T1D212's 6.75\" mounting depth fits inside the cabinet with clearance. Internal depth from the vertical baffle to the interior of the angled seat-side face ranges from approximately 8.65\" at the top edge to 14.1\" at the bottom (after accounting for 3\/4\" MDF panel thickness), with the driver's mounting position at cabinet center providing over 10.6\" of clearance behind the motor. That's ample room for the T1's substantial magnet structure and inductive damping heat sink, and gives the motor breathing room to dissipate the thermal load of 800W RMS operation.\u003c\/p\u003e\n    \u003ch3\u003eFlexFit Basket Consideration\u003c\/h3\u003e\n    \u003cp\u003eThe T1D212 uses Rockford's FlexFit basket, a slot-mounted frame pattern that allows fine-tuning of the driver's rotational mounting position. The Proline X wedge baffle is drilled with a standard 8-hole bolt pattern compatible with the T1D212's slotted mounting geometry. Threaded 8\/32 inserts pressed into the baffle backside accept stainless steel machine screws included with the enclosure.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Built for 800W RMS Operation\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Critical for an enclosure housing an 800 watts RMS driver: panel resonance would color the sound and MDF creep would allow air leaks over time under sustained high-power operation. Langboard's density and stability address both.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the wedge cabinet fold into its angled shape with maximum glue surface. Dado joints lock the vertical woofer baffle and the angled seat-side panel into the side walls, no fasteners visible from outside, no exposed end grain at joints, no compromise on structural integrity under high-excursion driver operation.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n        \u003cp\u003eThreaded inserts pressed into the vertical woofer baffle accept stainless steel mounting screws. No stripped pilot holes, no MDF damage from drywall screws, no surprises when the next driver upgrade rolls around. Full compatibility with the T1D212's FlexFit slot-mounted frame pattern.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side. Sized to comfortably handle the T1D212's 800W RMS power delivery.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. The angled seat-side panel requires precise CNC compound cuts to hit both the volume target and the mating angles between the top and bottom edges. Tolerances that manual fabrication can't reliably hold. Internal volume is verified on every unit to ensure the RF-spec 1.25 cubic foot net target is achieved.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eEnclosure Only\u003c\/h3\u003e\n    \u003cp\u003eThis listing is for the enclosure only. Drop in your existing Rockford Fosgate T1D212 (Dual 2-ohm) or T1D412 (Dual 4-ohm) subwoofer, the cabinet fits both variants identically since RF publishes the same 1.25 cu ft sealed spec across the T1 12\" line. Source your driver from any authorized Rockford Fosgate dealer.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the Rockford Fosgate T1D212 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe Rockford Fosgate T1D212 is a dual-voice-coil driver with both coils at 2 ohms, using RF's SWIFT terminal system that allows quick reconfiguration between series and parallel wiring. The pre-wired terminal cup accepts the two-conductor connection via 12-gauge OFC, with stainless steel input hardware.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eParallel wiring (1 ohm total load):\u003c\/strong\u003e Both voice coils in parallel via SWIFT terminals presents a 1-ohm load to your amplifier, the highest-output configuration, ideal for RF's own Power T500-1bdCP or T750-1bdCP monoblock amplifiers, or any modern class D monoblock stable at 1 ohm. This is the standard high-SPL wiring configuration.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eSeries wiring (4 ohm total load):\u003c\/strong\u003e Both voice coils in series via SWIFT terminals presents a 4-ohm load. Used with amplifiers that don't support 1-ohm stable operation, or in dual-driver installs where paralleling two 4-ohm loads at the amp gets you back to a 2-ohm total. Also compatible with class AB amplifiers preferring higher impedance loads.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eT1D412 alternative:\u003c\/strong\u003e Rockford also offers the T1D412 (Dual 4-ohm) variant for installs where 2-ohm parallel (T1D412 wired parallel = 2 ohms) or 8-ohm series operation is preferred. Either variant fits this cabinet identically.\u003c\/p\u003e\n    \u003cp\u003eThe T1D212 is rated for 800 watts RMS continuous (CEA-2031 compliant) with 1600W peak handling. Aim for a well-regulated monoblock delivering 600-800 watts RMS at your chosen impedance for the best combination of headroom, dynamic capability, and long-term reliability. Rockford Fosgate's own Power T-series amplifiers are natural matches. Set your amplifier's active low-pass filter between 80 and 100 Hz for musical accuracy in a full-range system.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects on the enclosure. Your Rockford Fosgate T1D212 subwoofer is covered by Rockford's own 1-year warranty when purchased through an authorized RF dealer. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eRockford's Flagship 12\" Power Sub, in a Spec-Perfect Trunk-Load Wedge\u003c\/h2\u003e\n    \u003cp\u003e1.25 cubic feet net internal, Rockford Fosgate's published optimum sealed volume for the T1D212, in a trunk-friendly wedge geometry that fires the VAST-enhanced 12\" cone rearward into the trunk cavity. 800 watts RMS ready, precision driver-specific engineering, built to order in Tennessee.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44529224220761,"sku":"PO 12-S W T1 BB","price":309.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871857753,"sku":"PO 12-S W T1 B","price":289.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWT1Front.png?v=1786848900"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-rockford-fosgate-p3d2-12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Rockford Fosgate P3D2-12","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(184, 115, 51, 0.2); border: 1px solid #b87333; color: #d99058; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #fef3e7; }\n  .po-section h2 { color: #8b5a2b; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #b87333; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #b87333; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #8b5a2b; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #fef3e7; border-left: 4px solid #b87333; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Rockford Fosgate P3D2-12\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design for the Rockford Fosgate Punch P3 Series\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e1.215 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1.02 ft³ Net (RF Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e20.25\" × 15\" × 9.125\/14.59\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe Rockford Fosgate P3D2-12 in RF's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe Rockford Fosgate P3D2-12 is Rockford's best-performing 12-inch Punch P3 subwoofer. Anodized aluminum cone with heat-sinking dust cap, VAST (Vertical Attach Surround Technique) Santoprene surround that extends effective radiating cone area by up to 25%, a hybrid stamp-cast basket that balances rigidity with reduced resonance, an extended pole piece with bumped backplate for heavy excursion, a 2.5-inch four-layer voice coil on an anodized aluminum former, and unique spider venting to keep the motor cooler under sustained operation. 600 watts RMS CEA-2031 compliant power handling, 1200W peak, dual 2-ohm voice coils, Klippel-verified motor. Same core engineering as the flagship P3D2-15 sibling, scaled to a 12\" cone form factor and Rockford's most trunk-friendly full-power 12\" driver.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 12 for Rockford Fosgate P3 is engineered to hit RF's exact published sealed specification. 1.215 cubic feet gross internal volume minus the P3D2-12's 0.194 cubic foot total driver displacement lands at 1.021 cubic feet net, essentially exact match to Rockford's 1.02 cubic foot published sealed spec, delivering the alignment RF's engineers designed the P3D2-12 to operate in.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e1.215 cubic feet gross = 1.021 cubic feet net after the P3D2-12's 0.194 cubic foot total driver displacement. Essentially exact match to Rockford Fosgate's published 1.02 cubic foot sealed spec for the P3D2-12. With the P3D2-12's T\/S parameters (Qts 0.49, Vas 57.7 L), that spec produces a system Qtc near 0.85, RF's 12\" spec is already tuned for musical accuracy out of the box.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n    \u003cp\u003eThis wedge is not a front-firing enclosure. The woofer is mounted on the vertical face that sits at the back of the box, closest to the trunk lid, and fires rearward into the trunk cavity. The angled face is on the opposite side of the box, the side that faces the front of the vehicle, and tucks against the rear seat back. Two different problems solved by one geometry.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n        \u003cp\u003eMost factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge (9.125\" at the top, 14.59\" at the bottom) matches that lean, tucking against the seat back with no wasted gap. The P3's shallow 6.66\" mounting depth allows a low-profile top face that fits parcel-shelf-limited trunks the deeper T1 wedge won't clear.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n        \u003cp\u003eThe vertical face on the opposite side of the wedge (20.25\" wide × 15\" tall) is where the P3D2-12 mounts. The driver fires rearward toward the trunk lid, using the trunk cavity as an acoustic loading chamber. Classic SQ trunk-load install pattern applied to Rockford's most musical 12\" driver.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n        \u003cp\u003eFiring the woofer into the trunk cavity rather than directly into the cabin uses the trunk itself as an extension of the acoustic system. Low frequencies transmit into the passenger cabin through the rear deck, seat back, and cabin boundaries, a smoother, less-localized presentation than direct-firing setups. Pairs especially well with the P3's already-musical character.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eCompact Cabinet, Fits Most Vehicles\u003c\/h4\u003e\n        \u003cp\u003e20.25\" wide by 15\" tall by 9.125-14.59\" deep. Fits sedan trunks, coupe cargo areas, hatchbacks and wagons, and pickup extended-cab installs without the height or footprint concerns of the 15\" P3 wedge. If the trunk holds a golf bag, it holds this cabinet.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eEngineered to Rockford Fosgate's Published Sealed Specification\u003c\/h2\u003e\n    \u003cp\u003eRockford Fosgate publishes exactly 1.02 cubic feet net internal as the recommended sealed enclosure volume for the P3D2-12. This spec is RF's own engineered target, the volume where the P3D2-12's motor structure, VAST-enhanced Santoprene surround, and progressive-roll spider suspension deliver the sealed response their Klippel-verified design targets. The Performance Optimized Wedge Sealed 12 delivers 1.215 cubic feet gross internal, which after subtracting the P3D2-12's total driver displacement of 0.194 cubic feet lands at 1.021 cubic feet net. Right on RF's published spec.\u003c\/p\u003e\n    \u003ch3\u003eWhy RF's 12\" Spec Is Already the Musical Spec\u003c\/h3\u003e\n    \u003cp\u003eWorking through the driver math: the P3D2-12 has published T\/S parameters of Qts 0.49 and Vas 57.7 liters. In RF's 1.02 cu ft sealed spec, the compliance ratio (Vas\/Vb) works out to approximately 2.0, which produces a system Qtc of approximately 0.85, the same musically-oriented alignment target we use across the PO Wedge line. Different from RF's 15\" P3 spec, which lands at a higher Qtc, about 1.14, for peak SPL output efficiency in a smaller cabinet. Fortunately for 12\" P3 buyers, RF's 12\" spec doesn't require the tuning adjustment their 15\" spec does. This box hits RF's actual number.\u003c\/p\u003e\n    \u003ch3\u003eSealed vs. Ported for the P3D2-12\u003c\/h3\u003e\n    \u003cp\u003eThe P3D2-12 is a versatile driver that Rockford supports both sealed (1.02 cu ft) and vented (1.79 cu ft) applications for. Sealed operation delivers the tightest, most controlled bass response, ideal for musical accuracy, sound quality installs, and daily-driven vehicles where cabin gain rewards a slightly warmer alignment. Ported delivers additional output efficiency in the peak-tuned range at the cost of transient accuracy and 75% more cabinet volume. This cabinet is engineered specifically for RF's sealed alignment, the SQ-oriented, musically accurate side of the P3D2-12's capabilities.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry and Driver Fitment\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the P3D2-12's exact 11.25\" cutout specification. The P3D2-12's very shallow 6.66\" mounting depth fits inside the cabinet with generous clearance. Internal depth from the vertical baffle to the interior of the angled seat-side face ranges from approximately 8.375\" at the top edge to 13.84\" at the bottom (after accounting for 3\/4\" MDF panel thickness), with the driver's mounting position at cabinet center providing over 10.3\" of clearance behind the motor. Substantial room for the P3's motor structure and extended pole piece \/ bumped backplate assembly.\u003c\/p\u003e\n    \u003ch3\u003eFlexFit Basket Consideration\u003c\/h3\u003e\n    \u003cp\u003eThe P3D2-12 uses Rockford's FlexFit basket, a slot-mounted frame pattern that allows fine-tuning of the driver's rotational mounting position. The Proline X wedge baffle is drilled with a standard bolt pattern compatible with the P3D2-12's slotted mounting geometry. Threaded 8\/32 inserts pressed into the baffle backside accept stainless steel machine screws included with the enclosure.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Built for 600W RMS Operation\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Panel resonance would color the P3's naturally musical response, and MDF creep would allow air leaks over time under sustained operation. Langboard's density and stability address both.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the wedge cabinet fold into its angled shape with maximum glue surface. Dado joints lock the vertical woofer baffle and the angled seat-side panel into the side walls, no fasteners visible from outside, no exposed end grain at joints, no compromise on structural integrity.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003e8\/32 Threaded Inserts\u003c\/h4\u003e\n        \u003cp\u003eThreaded inserts pressed into the vertical woofer baffle accept stainless steel mounting screws. Compatible with the P3D2-12's FlexFit slot-mounted frame pattern. No stripped pilot holes, no MDF damage from drywall screws, no surprises when the next driver upgrade rolls around.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side. Comfortably handles the P3D2-12's 600W RMS power delivery.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. The angled seat-side panel requires precise CNC compound cuts to hit both the RF-spec 1.02 cu ft net volume target and the mating angles between the top and bottom edges. Internal volume is verified on every unit to ensure the manufacturer's spec target is achieved.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic. Performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eEnclosure Only\u003c\/h3\u003e\n    \u003cp\u003eThis listing is for the enclosure only. Drop in your existing Rockford Fosgate P3D2-12 (Dual 2-ohm) or P3D4-12 (Dual 4-ohm) subwoofer, the cabinet fits both variants identically since RF publishes the same 1.02 cu ft sealed spec across the P3 12\" line. Source your driver from any authorized Rockford Fosgate dealer.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the Rockford Fosgate P3D2-12 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe Rockford Fosgate P3D2-12 is a dual-voice-coil driver with both coils at 2 ohms, using RF's 10-AWG nickel-plated push terminals for direct wire attachment. The pre-wired terminal cup accepts the two-conductor connection via 12-gauge OFC, with stainless steel input hardware.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eParallel wiring (1 ohm total load):\u003c\/strong\u003e Both voice coils wired in parallel presents a 1-ohm load to your amplifier, the highest-output configuration, ideal for RF's own Punch P600X1 or Prime R500X1D monoblock amplifiers, or any modern class D monoblock stable at 1 ohm. Standard high-output wiring for a single-driver P3 install.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eSeries wiring (4 ohm total load):\u003c\/strong\u003e Both voice coils wired in series presents a 4-ohm load. Used with amplifiers that don't support 1-ohm stable operation, or in dual-driver installs where paralleling two 4-ohm loads at the amp gets you back to a 2-ohm total. Also compatible with class AB amplifiers preferring higher impedance loads.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eP3D4-12 alternative:\u003c\/strong\u003e Rockford also offers the P3D4-12 (Dual 4-ohm) variant for installs where 2-ohm parallel or 8-ohm series operation is preferred. Either variant fits this cabinet identically.\u003c\/p\u003e\n    \u003cp\u003eThe P3D2-12 is rated for 600 watts RMS continuous (CEA-2031 compliant) with 1200W peak handling. Same power rating as the flagship 15\" P3D2-15 despite the smaller cone. Aim for a well-regulated class D monoblock delivering 400-600 watts RMS at your chosen impedance for the best combination of headroom and dynamic capability. Rockford Fosgate's own Punch P600X1 monoblock is a natural match. Set your amplifier's active low-pass filter between 80 and 100 Hz for musical accuracy in a full-range system.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped, a 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects on the enclosure. Your Rockford Fosgate P3D2-12 subwoofer is covered by Rockford's own 1-year warranty when purchased through an authorized RF dealer. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e, we install this gear ourselves, in our own vehicles.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eRockford's Musical 12\" Punch, in RF's Spec-Perfect Trunk-Load Wedge\u003c\/h2\u003e\n    \u003cp\u003e1.02 cubic feet net, Rockford Fosgate's published sealed spec for the P3D2-12, which naturally targets a musical system Qtc near 0.85. Trunk-load wedge geometry that fires the aluminum cone rearward into the trunk cavity. 600 watts RMS ready, built to order in Tennessee.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44529409818713,"sku":"PO 12-S W P3 BB","price":279.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871824985,"sku":"PO 12-S W P3 B","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWP3Front.png?v=1786846321"},{"product_id":"performance-optimized-wedge-sealed-12-audiophile-enclosure-image-dynamics-idmax12-v-4","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Image Dynamics IDMAX12 V.4","description":"\u003cdiv class=\"po-wrap\"\u003e\n\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Image Dynamics IDMAX12 V.4\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.25 ft3 Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e1.40 ft3 Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 1.10 to 1.32\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e21.92\" x 15\" x 9.51\/14.97\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Image Dynamics IDMAX12 V.4 in a Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eA 3 inch dual voice coil, 19 mm of one-way travel, a 500 watt RMS rating and the bolt-on field-replaceable basket the IDMAX line is known for. The alignment below follows from Image Dynamics' own published Thiele-Small parameters, which they give separately for each coil version.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.25 cubic feet net per driver is Image Dynamics' published Universal sealed airspace for the IDMAX12 V.4, and this cabinet is cut to it exactly.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe IDMAX12 V.4 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches the roughly 20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cone firing rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eThe trunk acts as an acoustic extension for a smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eThe wedge tucks against the seat back and the space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Image Dynamics IDMAX12 V.4\u003c\/h2\u003e\n\u003cp\u003e1.25 cubic feet net per driver is Image Dynamics' published Universal sealed airspace for the IDMAX12 V.4, and this cabinet is cut to it exactly.\u003c\/p\u003e\n\u003cp\u003eThat airspace produces a \u003cstrong\u003ehigh-Q sealed alignment\u003c\/strong\u003e, Qtc 1.10 to 1.32 depending on coil. It is not a Butterworth box and it is not trying to be. Reaching Qtc 0.707 on the D2 coil would take about 9.8 cubic feet, roughly 8 times this cabinet, and the extension gained would be under two hertz. What the higher Q buys is a rise around 45 Hz and a half-power point of 32.5 to 34.3 Hz anechoic, which is lower than a flatter alignment of the same size would reach. In a vehicle, cabin gain works on everything below that.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc 1.097 · D4 Qtc 1.323 · fc 45.3 Hz · F3 32.5 to 34.3 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 11.024 in. Driver mounting depth 8.071 in. Threaded inserts pressed into the baffle backside at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4 in MDF throughout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC cut V-grooves at every panel intersection, sides seated in dados.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4 in MDF sheets at the driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite, 12 gauge OFC pre-wired to the driver position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Image Dynamics IDMAX12 V.4 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe IDMAX12 V.4 ships as a D2 or a D4. A single D2 gives 4 ohms in series or \u003cstrong\u003e1 ohm in parallel\u003c\/strong\u003e. A single D4 gives 8 ohms in series or 2 ohms in parallel. Work the wiring out before you buy the amplifier, not after.\u003c\/p\u003e\n\u003cp\u003ePower handling is 500 watts RMS. Aim for roughly 350 to 500 watts at the final wired impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet. 1 year limited warranty. Enclosure only, the Image Dynamics IDMAX12 V.4 driver is purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eImage Dynamics IDMAX12 V.4: Built to Image Dynamics' Own Airspace\u003c\/h2\u003e\n\u003cp\u003e1.25 cubic feet net at Qtc 1.10 to 1.32, cut direct fit and built to order in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44529670553689,"sku":"PO 12-S W IDMAX BB","price":299.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871464537,"sku":"PO 12-S W IDMAX B","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO_12-S_W_IDMAX_Front.jpg?v=1790365776"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-kicker-compq-12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Kicker CompQ 12","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(184, 115, 51, 0.2); border: 1px solid #b87333; color: #d99058; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #fef3e7; }\n  .po-section h2 { color: #8b5a2b; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #b87333; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #b87333; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #8b5a2b; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #fef3e7; border-left: 4px solid #b87333; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) { .po-hero { padding: 40px 20px; } .po-hero .po-title { font-size: 1.8em; } .po-section { padding: 30px 20px; } .po-section h2 { font-size: 1.6em; } .po-grid { grid-template-columns: 1fr; } .po-cta { padding: 40px 20px; } .po-cta h2 { font-size: 1.6em; } }\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Kicker CompQ 12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design for the Kicker CompQ 12\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.52 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e1.37 ft³ Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e25\" × 15\" × 9\/14.4\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Kicker CompQ 12 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eThe CompQ 12 is Kicker's best round 12-inch driver. It shares the motor architecture and cone technology of the Solo-Baric L7 in a round basket, and when you give it a musical sealed box it plays with the articulation and tonal accuracy of top SQ competition drivers in this class, with more headroom than most.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.52 cu ft gross internal volume produces 1.37 cu ft net after driver displacement. The wedge geometry mounts the woofer on the vertical trunk-lid-side face, firing rearward into the trunk cavity for optimum cabin loading.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThis wedge is not a front-firing enclosure. The woofer mounts on the vertical face at the back of the box (closest to the trunk lid) and fires rearward into the trunk cavity. The angled face is on the opposite side and tucks against the rear seat back.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eMost factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge matches that lean, tucking against the seat back with no wasted gap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eThe vertical face on the opposite side of the wedge is where the CompQ 12 mounts. The cone fires rearward toward the trunk lid, using the trunk cavity as an acoustic loading chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eFiring the woofer into the trunk cavity uses the trunk itself as an extension of the acoustic system. Low frequencies transmit into the cabin through the rear deck, seat back, and cabin boundaries, a smoother, less localized presentation than direct-firing setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eThe wedge tucks against the seat back where cargo can't be stored anyway. Cargo space in front of the wedge (toward the trunk lid) stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Kicker CompQ 12\u003c\/h2\u003e\n\u003cp\u003eBuilt to 1.37 cubic feet net, which puts the CompQ 12 at a Qtc of 0.79 based on bench-measured T\/S parameters. Punchier than pure Butterworth, sitting just above the musical sweet spot with extra midbass emphasis. On this driver, in a wedge that loads the trunk this cleanly, 0.79 is the alignment that hits kick drums with authority and stays composed on complex low-end passages.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eTarget System Qtc: 0.79 · F3: ~46 Hz · Fc: ~52 Hz\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eThe vertical trunk-lid-side baffle is CNC-cut to 11.0625\" (Kicker spec). Mounting depth required is 7.125\", with the wedge geometry providing ample interior clearance for the driver's motor. 8\/32 threaded inserts pressed into the baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec: denser and more dimensionally stable than commodity MDF. Less panel resonance, tighter joints, longer service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection let the wedge cabinet fold into its angled shape with maximum glue surface. Dado joints lock the vertical woofer baffle and angled seat-side panel into the side walls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at the driver mounting face. Eliminates flex under high mechanical load and gives the driver a rigid, isolated mounting platform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber composite terminal cup with 12 gauge OFC pre-wired to the driver position. 3D-printed in-house on Bambu Lab H2S 3D printers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eStandard finish is charcoal gray trunk liner. Optional plush black carpet finish adds $10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eChoose from Black, Blue, Red, White, or opt out entirely (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eThis listing is box-only. Bring your own CompQ 12.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Kicker CompQ 12 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eIf you're bringing your own amp, target 700-900 watts RMS at the woofer's impedance for a clean, headroom-rich musical system. The CompQ 12 is rated to 1000 watts RMS continuous and will handle it all day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee on our ShopSabre CNC equipment. Every enclosure is CNC-cut, hand-assembled, glued and clamped, wrapped in carpet, and quality-checked by the same small team. 1-year limited warranty. Questions on fitment or amplifier matching, call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eKicker CompQ 12: Precision-Tuned in a Trunk-Load Wedge\u003c\/h2\u003e\n\u003cp\u003e1.37 cubic feet net, engineered for the CompQ 12 in a wedge geometry that fires the driver rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44532530217049,"sku":"PO 12-S W CompQ BB","price":289.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871726681,"sku":"PO 12-S W CompQ B","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWCompQFront.jpg?v=1787532388"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-kicker-comp-vx-12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Kicker Comp VX 12","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(184, 115, 51, 0.2); border: 1px solid #b87333; color: #d99058; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #fef3e7; }\n  .po-section h2 { color: #8b5a2b; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #b87333; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #b87333; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #8b5a2b; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #fef3e7; border-left: 4px solid #b87333; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) { .po-hero { padding: 40px 20px; } .po-hero .po-title { font-size: 1.8em; } .po-section { padding: 30px 20px; } .po-section h2 { font-size: 1.6em; } .po-grid { grid-template-columns: 1fr; } .po-cta { padding: 40px 20px; } .po-cta h2 { font-size: 1.6em; } }\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Kicker Comp VX 12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design for the Kicker Comp VX 12\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.1 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e1.00 ft³ Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e19.75\" × 15\" × 9\/14.4\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Kicker Comp VX 12 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eThe Comp VX 12 is Kicker's high-value performance 12-inch, ships DVC 2Ω or DVC 4Ω. Ribbed polyurethane surround, stamped steel basket, back-fed leads. Rated 600W RMS, plays clean well below that in a properly-sized sealed cabinet.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.1 cu ft gross internal volume produces 1.00 cu ft net after driver displacement. Matches Kicker's own recommended maximum sealed spec.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThis wedge is not a front-firing enclosure. Woofer mounts on the vertical trunk-lid-side face, fires rearward into the trunk cavity. Angled face on the opposite side tucks against the rear seat back.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eMost factory rear seats lean ~20 degrees from vertical. Angled face matches that lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eVertical face is where the Comp VX 12 mounts. Cone fires rearward toward the trunk lid.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eFiring into the trunk cavity uses the trunk itself as an acoustic extension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against the seat back. Cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Kicker Comp VX 12\u003c\/h2\u003e\n\u003cp\u003eBuilt to 1.00 cubic feet net, matching Kicker's own recommended maximum sealed spec. Puts the Comp VX 12 at Qtc 0.65 based on bench T\/S, an extended musical alignment that gives the driver room to breathe.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eTarget System Qtc: 0.65 · F3: ~55 Hz · Fc: ~50 Hz\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC-cut to 11.0\" (Kicker spec). Mounting depth required 6.0\". 8\/32 threaded inserts pressed into the baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at the driver mounting face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber composite terminal cup, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own Comp VX 12.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Kicker Comp VX 12 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eShips DVC 2Ω or DVC 4Ω. Target 500-600W RMS at the woofer's impedance. Comp VX 12 is rated 600W RMS continuous.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee on our ShopSabre CNC equipment. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eKicker Comp VX 12: Precision-Tuned in a Trunk-Load Wedge\u003c\/h2\u003e\n\u003cp\u003e1.00 cubic feet net, Kicker's maximum sealed spec, in a wedge geometry that fires the driver rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44532552466521,"sku":"PO 12-S W CompVX BB","price":289.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871693913,"sku":"PO 12-S W CompVX B","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWCompVXFront.jpg?v=1787533145"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-prodigy-nb5-12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Prodigy NB5-12","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Prodigy NB5-12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.86 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.79 ft³ Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e16.5\" × 14\" × 10.5\/15.5\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Prodigy NB5-12 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eProdigy Audio's flagship 12-inch SQL platform. 1200W RMS, 27mm one-way Xmax at 70% BL, 280oz ferrite motor with upper\/lower aluminum Faraday shorting rings, vented pole, 2.75\" flat-aluminum voice coil. Heavy cast aluminum frame doubles as heat exchanger. NB5-12D2 or NB5-12D4.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.86 cu ft gross produces 0.79 cu ft net after driver displacement. D4-optimized alignment: D4 coil lands Qtc 0.68 (near-Butterworth), D2 coil lands Qtc 0.55 (extended musical).\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe NB5-12 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches ~20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eCone fires rearward toward the trunk lid.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eTrunk itself acts as acoustic extension for smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back; cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Prodigy NB5-12\u003c\/h2\u003e\n\u003cp\u003e0.79 cubic feet net produces D4-optimized alignment (Qtc 0.68 near-Butterworth) with the D2 coil landing at Qtc 0.55 (extended musical). Both are usable alignments; D4 is the primary target.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc: 0.55 · D4 Qtc: 0.68 · Fc: ~52 Hz · F3: 52-63 Hz depending on coil\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC-cut direct-fit for NB5-12. 8\/32 threaded inserts pressed into baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber composite, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own NB5-12.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Prodigy NB5-12 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eShips NB5-12D2 or NB5-12D4. Target 800-1200W RMS at the woofer's impedance. NB5-12 rated 1200W RMS continuous.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eProdigy NB5-12: Precision-Tuned in a Trunk-Load Wedge\u003c\/h2\u003e\n\u003cp\u003e0.79 cubic feet net. D4-optimized Butterworth in a wedge that fires the driver rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44532982218841,"sku":"PO 12-S W NB5 BB","price":299.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871792217,"sku":"PO 12-S W NB5 B","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWNB5Front.jpg?v=1787531369"},{"product_id":"performance-optimized-wedge-sealed-dual-12-enclosure-prodigy-nb5-12","title":"Performance Optimized Wedge Sealed Dual 12\" Enclosure | Prodigy NB5-12","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Prodigy NB5-12 Dual\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 12\" Sealed Wedge | Two Separate Chambers | Rear-Firing Trunk-Load\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.76 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.67 ft³ Net\/Ch\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDual Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e29.25\" × 14.5\" × 9.5\/14.75\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Prodigy NB5-12 in a Dual-Driver Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eTwo NB5-12s in a single trunk-loading wedge with fully independent sealed chambers. 1200W RMS per driver, +6dB of headroom over single-driver setup. Standing Proline X design rule: dual sealed enclosures always get full-height chamber dividers.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.76 cu ft total gross, split into 0.88 cu ft per-chamber gross, 0.67 cu ft per-chamber net after driver displacement. Same per-chamber alignment as the single-driver PO Wedge for NB5-12.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eFull-height, full-depth 3\/4\" MDF divider between the two chambers. Each driver sees its own dedicated air volume and its own terminal cup. Eliminates cross-chamber acoustic coupling between drivers.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003eAll Proline X dual-driver sealed enclosures use this separate-chamber architecture. Each driver produces its own clean sealed alignment, independent of the other.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eBoth NB5-12s mount on the vertical trunk-lid-side face and fire rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches ~20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofers\u003c\/h4\u003e\n\u003cp\u003eBoth drivers on vertical face, firing rearward into trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eTrunk acts as acoustic extension for smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back; cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Prodigy NB5-12\u003c\/h2\u003e\n\u003cp\u003ePer-chamber 0.67 cubic feet net gives D4 Qtc 0.71 (essentially Butterworth), D2 Qtc 0.57 (extended musical). Same per-chamber alignment as the single-driver PO Wedge for NB5-12.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers (Per Chamber)\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc: 0.57 · D4 Qtc: 0.71 · Fc: ~47 Hz · F3: 48-58 Hz depending on coil\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF panels + 3\/4\" chamber divider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at both driver mounting positions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTwo Pre-Wired Terminal Cups\u003c\/h4\u003e\n\u003cp\u003eOne Proline X ABS\/carbon-fiber composite terminal cup per chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own pair of matched NB5-12 drivers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the NB5-12 Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eTwo independent terminal cups let you wire in series or parallel externally at the amp. Run matched impedance drivers only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eProdigy NB5-12 Dual, Two Chambers, Two Cups, One Wedge\u003c\/h2\u003e\n\u003cp\u003e0.67 cubic feet net per chamber, essentially Butterworth on D4, extended musical on D2. Doubled up for +6dB of headroom.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44533145698393,"sku":"PO 12D-S W NB5 BB","price":379.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589872545881,"sku":"PO 12D-S W NB5 B","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12D-SWNB5Front.jpg?v=1787513348"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-alpine-r2-w12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Alpine R2-W12","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine R2-W12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.85 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.75 ft³ Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e18\" × 15\" × 6.85\/13.125\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine R2-W12 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAlpine's flagship R2-Series 12-inch subwoofer. Pulp\/Kevlar cone, Santoprene surround, progressive spider, cast aluminum frame with perimeter venting. 65.5mm 4-layer aluminum voice coil, 144oz double-stacked strontium ferrite motor. 750W RMS, 20mm Xmax. R2-W12D2 or R2-W12D4.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.85 cu ft gross produces 0.75 cu ft net after driver displacement. Matches Alpine's own recommended sealed volume. D2 lands Qtc 0.68 (near-Butterworth), D4 lands Qtc 0.81 (punchy).\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe R2-W12 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches ~20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eCone fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eTrunk acts as acoustic extension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back; cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine R2-W12\u003c\/h2\u003e\n\u003cp\u003e0.75 cubic feet net produces Qtc 0.68 with the D2 coil (near-Butterworth musical) and Qtc 0.81 with the D4 coil (punchy) based on Alpine's published T\/S. Sits at the middle of Alpine's own recommended sealed range.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc: 0.68 · D4 Qtc: 0.81 · Fc: ~48 Hz · F3: 43-50 Hz depending on coil\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC-cut to 10.79\" (Alpine spec). Mounting depth required 7.45\". 8\/32 threaded inserts pressed into baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber composite, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own R2-W12.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Alpine R2-W12 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eShips R2-W12D2 or R2-W12D4. Alpine's 8AWG push terminals with VC configuration jumpers let you wire the dual voice coils in series or parallel right at the driver. Target 500-750W RMS at the woofer's final impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine R2-W12: Alpine's Own Sealed Spec\u003c\/h2\u003e\n\u003cp\u003e0.75 cubic feet net, matches Alpine's published sealed volume, in a wedge that fires the driver rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44536223105113,"sku":"PO 12-S W R2 BB","price":289.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871497305,"sku":"PO 12-S W R2 B","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWR2Front.jpg?v=1787533500"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/collections\/12-inch-subwoofer-boxes-9127304.jpg?v=1788046965","url":"https:\/\/audiointensity.com\/collections\/12-inch-subwoofer-box.oembed?page=4","provider":"Audio Intensity","version":"1.0","type":"link"}