{"title":"JL Audio Subwoofer Boxes and Enclosures","description":"\u003cdiv class=\"ai-collection-block\"\u003e\n\n\u003ch2\u003eWhich Box Your JL Audio Driver Calls For\u003c\/h2\u003e\n\n\u003cp\u003eJL Audio ladders its subwoofers and the enclosure should follow. A W3 and a W7 want different net volumes, and a TW3 wants a different cabinet entirely because of its mounting depth. We build a different series against each.\u003c\/p\u003e\n\n\u003ch3\u003eW0, W1 and W3: Performance Series\u003c\/h3\u003e\n\u003cp\u003eThe workhorse end of the JL range. Performance Series enclosures cover the 10 inch at $219.99 and the 12 inch at $249.99, cut to the net volume those drivers were designed around rather than a generic box that happens to fit the cutout.\u003c\/p\u003e\n\n\u003ch3\u003eW7 and W7AE: Professional Series\u003c\/h3\u003e\n\u003cp\u003eThe W7 is JL's flagship and gets the Professional Series treatment: the 10w7 at $399.99, the 12w7 at $479.99, and the 13w7 in a ported build at $599.99. These are the boxes to pair with a driver at that price point, where a mismatched cabinet costs you the performance you paid for.\u003c\/p\u003e\n\n\u003ch3\u003eTW3: Micro Series\u003c\/h3\u003e\n\u003cp\u003eThe TW3 is JL's shallow mount line, so it needs a shallow cabinet rather than a scaled down standard one. Micro Series boxes cover the 10TW3 at $249.99 and the 12TW3 at $269.99, built with stack fab construction so the walls stay rigid at a reduced external footprint. We stock the \u003ca href=\"https:\/\/audiointensity.com\/products\/jl-audio-10tw3-d4\"\u003e10TW3-D4\u003c\/a\u003e driver if you need both halves.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-spec\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eQuick Reference: JL Audio Enclosure Mapping\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003eW0 \/ W1 \/ W3:\u003c\/span\u003e Performance Series\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003eW6:\u003c\/span\u003e Performance Optimized, built to spec\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003eW7 \/ W7AE:\u003c\/span\u003e Professional Series\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003eTW3 shallow mount:\u003c\/span\u003e Micro Series\u003c\/p\u003e\n\u003c\/aside\u003e\n\n\u003ch2\u003eShallow Mount and Depth Limits\u003c\/h2\u003e\n\n\u003cp\u003eMounting depth is the constraint that decides most JL builds, particularly in trucks and under seats. The TW3 exists precisely because a standard W series driver will not physically fit in those spaces, and dropping a shallow driver into a full size box wastes the advantage you paid for.\u003c\/p\u003e\n\n\u003cp\u003eIf you are working to a depth limit, measure the space before choosing the driver rather than after. A Micro Series box plus a TW3 will fit places a W3 and a standard cabinet will not. If you have the room, the W series in a matched box will generally give you more for the money.\u003c\/p\u003e\n\n\u003ch2\u003eLoaded Option\u003c\/h2\u003e\n\n\u003cp\u003eA Micro Series 10 inch ships loaded, with the JL Audio 10TW3-D4 already mounted and wired, at $699.99. That covers the gasket seal and coil wiring at our bench rather than in your driveway. Everything else here ships as a box only, prewired to the terminal cup and ready for the driver you supply. If you want a loaded build in a configuration we do not list, we can assemble one.\u003c\/p\u003e\n\n\u003ch2\u003eHow These Are Built\u003c\/h2\u003e\n\n\u003cp\u003eLangboard Elite 3\/4 inch MDF, CNC cut on ShopSabre routers in Tullahoma, Tennessee. Internally braced, prewired to a Proline X ABS and carbon fiber terminal cup with stainless steel hardware. Sealed variants ship with polyfill installed.\u003c\/p\u003e\n\n\u003cp\u003eWarranty follows the series. Professional Series and Micro Series enclosures, which covers the W7 and TW3 boxes, carry a 2 year limited warranty on craftsmanship and materials. Performance Series enclosures, which covers the W0, W1 and W3 boxes, carry 1 year.\u003c\/p\u003e\n\n\u003cp\u003eNet volume is calculated from each driver's published Thiele Small parameters. For the reasoning behind sealed against ported on a given JL driver, run the numbers through our \u003ca href=\"https:\/\/audiointensity.com\/pages\/ebp-calculator\"\u003eEBP calculator\u003c\/a\u003e, or read \u003ca href=\"https:\/\/audiointensity.com\/pages\/qes\"\u003ewhat Qes means\u003c\/a\u003e if you are working from a spec sheet.\u003c\/p\u003e\n\n\u003cp\u003eFor enclosures outside this brand, start at the \u003ca href=\"https:\/\/audiointensity.com\/collections\/subwoofer-box\"\u003esubwoofer enclosure hub\u003c\/a\u003e, or browse \u003ca href=\"https:\/\/audiointensity.com\/collections\/sealed-subwoofer-boxes\"\u003esealed boxes\u003c\/a\u003e, \u003ca href=\"https:\/\/audiointensity.com\/collections\/ported-subwoofer-boxes\"\u003eported boxes\u003c\/a\u003e and \u003ca href=\"https:\/\/audiointensity.com\/collections\/loaded-subwoofer-boxes\"\u003eloaded enclosures\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-cta\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eJL Driver Not Listed?\u003c\/p\u003e\n\u003cp\u003eW6, W7AE variants and older W series are all buildable. We run the routers ourselves, so a different net volume or cutout is a phone call rather than a special order.\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\u003ch2\u003eFrequently Asked JL Audio Enclosure Questions\u003c\/h2\u003e\n\n\u003ch3\u003eCan I put a W7 in a box built for a W3?\u003c\/h3\u003e\n\u003cp\u003eNo. The W7 and W3 have different compliance and resonance and call for different net volumes. The W7 in particular is unusually specific about the cabinet it wants, which is why it gets its own Professional Series build rather than sharing a box with the rest of the range.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the difference between the TW3 and the W series?\u003c\/h3\u003e\n\u003cp\u003eThe TW3 is JL's shallow mount line, designed for installs where mounting depth is limited such as behind or under a seat. The W series is standard depth. They are not interchangeable in the same enclosure, because the shallow driver needs a shallow cabinet to be worth choosing in the first place.\u003c\/p\u003e\n\n\u003ch3\u003eDo you sell JL Audio subwoofers as well as the boxes?\u003c\/h3\u003e\n\u003cp\u003eWe stock the 10TW3-D4 and 12TW3-D4 shallow mount drivers. For W series drivers we build the enclosure and you source the sub, or contact us and we will point you in the right direction.\u003c\/p\u003e\n\n\u003ch3\u003eDo you build for the 13W7?\u003c\/h3\u003e\n\u003cp\u003eYes. The 13w7 gets a ported Professional Series enclosure at $599.99. It is the largest driver in the W7 line and the ported alignment suits it where the space allows.\u003c\/p\u003e\n\n\u003ch3\u003eShould I buy the box loaded or empty?\u003c\/h3\u003e\n\u003cp\u003eEmpty if you already own the driver, which covers most of this range. A Micro Series 10 inch is listed loaded, with the 10TW3-D4 mounted and wired. If you want another configuration loaded, we can assemble it before it ships.\u003c\/p\u003e\n\n\u003ch3\u003eDo I need an amplifier?\u003c\/h3\u003e\n\u003cp\u003eYes. These are passive enclosures with no amplification built in. For a single subwoofer a monoblock matched to the driver's final impedance is the standard approach. Keeping the factory head unit also means adding a line output converter or a DSP with speaker level inputs.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the warranty?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the series. The W7 boxes are Professional Series and the TW3 boxes are Micro Series, and both carry a 2 year limited warranty on craftsmanship and materials. The W0, W1 and W3 boxes are Performance Series and carry 1 year. The JL Audio driver itself carries its own manufacturer warranty separately.\u003c\/p\u003e\n\n\u003c\/div\u003e","products":[{"product_id":"proline-x-jl-audio-13w7-ported-subwoofer-enclosure","title":"Proline X Enclosure | Professional Series | Fits JL Audio 13W7","description":"\u003cstyle\u003e\n .ps-wrap * { box-sizing: border-box; }\n .ps-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; margin: 0 auto; }\n\n .ps-hero {\n background: linear-gradient(135deg, #0f172a 0%, #7c2d12 100%);\n border-radius: 8px;\n padding: 40px 36px;\n margin-bottom: 32px;\n position: relative;\n overflow: hidden;\n }\n .ps-hero::before {\n content: '';\n position: absolute;\n top: -40px; right: -40px;\n width: 220px; height: 220px;\n background: rgba(234,88,12,0.12);\n border-radius: 50%;\n }\n .ps-hero-badge {\n display: inline-block;\n background: transparent;\n border: 2px solid #ea580c;\n color: #fdba74;\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 .ps-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n .ps-hero p { color: #cbd5e1; font-size: 1em; margin: 0 0 24px 0; max-width: 660px; line-height: 1.7; }\n .ps-hero-stats { display: flex; gap: 28px; flex-wrap: wrap; }\n .ps-stat { text-align: center; }\n .ps-stat-num { display: block; color: #fdba74; font-size: 1.5em; font-weight: 800; line-height: 1; }\n .ps-stat-label { display: block; color: #94a3b8; font-size: 0.72em; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 4px; }\n\n .ps-section {\n background: #ffffff;\n border: 1px solid #e2e8f0;\n border-top: 4px solid #ea580c;\n border-radius: 6px;\n padding: 28px 32px;\n margin-bottom: 24px;\n }\n .ps-section:nth-child(odd) { background: #f8fafc; }\n .ps-section h3 { color: #7c2d12; font-size: 1.15em; font-weight: 700; margin: 0 0 14px 0; }\n .ps-section p { color: #334155; font-size: 0.97em; margin: 0 0 12px 0; }\n .ps-section p:last-child { margin-bottom: 0; }\n\n .ps-highlight {\n background: #fff7ed;\n border-left: 5px solid #ea580c;\n padding: 22px 28px;\n margin: 28px 0;\n border-radius: 0 6px 6px 0;\n }\n .ps-highlight h3 { color: #7c2d12; margin: 0 0 10px 0; font-size: 1.1em; font-weight: 700; }\n .ps-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n .ps-highlight p:last-child { margin-bottom: 0; }\n\n .ps-alert {\n background: #ffedd5;\n border: 1px solid #ea580c;\n border-radius: 6px;\n padding: 14px 18px;\n margin: 20px 0;\n font-size: 0.93em;\n color: #9a3412;\n }\n .ps-alert strong { color: #7c2d12; }\n\n .ps-card-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 18px;\n margin: 24px 0;\n }\n @media (max-width: 600px) { .ps-card-grid { grid-template-columns: 1fr; } }\n .ps-card {\n background: #ffffff;\n border: 1px solid #e2e8f0;\n border-top: 3px solid #ea580c;\n border-radius: 6px;\n padding: 22px;\n }\n .ps-card-label {\n display: inline-block;\n background: #ea580c;\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 .ps-card h4 { color: #7c2d12; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n .ps-card-divider { height: 2px; background: #ea580c; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n .ps-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n .ps-card p strong { color: #7c2d12; }\n\n .ps-warranty {\n background: #0f172a;\n border-left: 5px solid #ea580c;\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 flex-wrap: wrap;\n }\n .ps-warranty-badge { background: #ea580c; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n .ps-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n .ps-warranty strong { color: #ffffff; }\n\n .ps-driver-link {\n background: #fff7ed;\n border: 1px solid #ea580c;\n border-radius: 6px;\n padding: 16px 22px;\n margin: 20px 0;\n display: flex;\n align-items: center;\n gap: 14px;\n flex-wrap: wrap;\n }\n .ps-driver-link-label {\n background: #ea580c;\n color: #fff;\n font-size: 0.7em;\n font-weight: 700;\n letter-spacing: 0.1em;\n text-transform: uppercase;\n padding: 4px 10px;\n border-radius: 3px;\n white-space: nowrap;\n }\n .ps-driver-link p { color: #1e293b; font-size: 0.93em; margin: 0; }\n .ps-driver-link a { color: #ea580c; font-weight: 700; text-decoration: none; }\n .ps-driver-link a:hover { text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ps-wrap\"\u003e\n\n \u003cdiv class=\"ps-hero\"\u003e\n \u003cdiv class=\"ps-hero-badge\"\u003eProfessional Series\u003c\/div\u003e\n \u003ch2\u003eThe Enclosure the 13W7 Was Waiting For\u003c\/h2\u003e\n \u003cp\u003eThe JL Audio 13W7AE is 52 lbs of motor, cone, and suspension engineering, a 13.5\" driver with 32mm one-way Xmax and 1500 watts RMS that demands an enclosure built to match. This box is spec'd to 2.5 cu ft net, tuned to 33Hz with 42.5 sq in of port area, and built with the structural integrity to stay accurate under sustained high-power use. Enclosure only. Driver not included.\u003c\/p\u003e\n \u003cdiv class=\"ps-hero-stats\"\u003e\n \u003cdiv class=\"ps-stat\"\u003e\n \u003cspan class=\"ps-stat-num\"\u003e2.5\u003c\/span\u003e\n \u003cspan class=\"ps-stat-label\"\u003ecu ft net\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ps-stat\"\u003e\n \u003cspan class=\"ps-stat-num\"\u003e33Hz\u003c\/span\u003e\n \u003cspan class=\"ps-stat-label\"\u003ePort tuning\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ps-stat\"\u003e\n \u003cspan class=\"ps-stat-num\"\u003e1.5\"\u003c\/span\u003e\n \u003cspan class=\"ps-stat-label\"\u003eDouble-layer baffle\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ps-stat\"\u003e\n \u003cspan class=\"ps-stat-num\"\u003e1500W\u003c\/span\u003e\n \u003cspan class=\"ps-stat-label\"\u003eRMS rated\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ps-driver-link\"\u003e\n \u003cspan class=\"ps-driver-link-label\"\u003eCompatible Driver\u003c\/span\u003e\n \u003cp\u003eBuilt exclusively for the \u003cstrong\u003eJL Audio 13W7AE-D1.5\u003c\/strong\u003e. Full driver specs at \u003ca href=\"https:\/\/www.garmin.com\/en-US\/p\/1669677\/pn\/010-03032-00\/\" target=\"_blank\"\u003egarmin.com\u003c\/a\u003e.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ps-section\"\u003e\n \u003ch3\u003eBuilt to the Driver's Numbers: Not a Generic Template\u003c\/h3\u003e\n \u003cp\u003eThe 13W7AE has a Qts of 0.448 and an Fs of 23.5Hz, a driver that is fundamentally suited to ported alignment, where its low resonant frequency and moderate Q combine to produce deep, high-output bass with extended low-frequency reach. JL Audio's published ported recommendation is 2.375 cu ft. This enclosure delivers 2.5 cu ft net, close to spec with a small addition of breathing room appropriate for this driver's Vas of 3.68 cu ft, tuned to 33Hz to prioritize low-frequency extension and SQ-focused output character over peak SPL efficiency.\u003c\/p\u003e\n \u003cp\u003eThe 42.5 sq in port area is sized to move the air volume this driver displaces at Xmax without generating port noise at sustained high power. This is not a shelf-queen build. It is engineered to perform correctly under the load of 1500 watts RMS into a 13.5\" driver with 32mm of one-way linear excursion.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ps-section\"\u003e\n \u003ch3\u003e1.5\" Double-Layer Baffle: Twelve-Point Mounting System\u003c\/h3\u003e\n \u003cp\u003eThe 13W7AE mounts via twelve bolt positions around its flange, a pattern JL Audio engineered specifically to distribute clamping force evenly across the largest mounting footprint in the W7 lineup. This enclosure's 1.5\" double-layer baffle, two full sheets of Langboard Elite MDF bonded and CNC-cut as one unit, provides the rigidity and thread depth that twelve-point mounting demands. Threaded inserts are installed through the baffle matched to the 13W7AE's #10-32 bolt pattern. Metal-to-metal threading. No wood screw holes to strip. No mounting hardware to chase after a loud session.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ps-section\"\u003e\n \u003ch3\u003eDado + V-Groove Joinery | Extensive Internal Bracing\u003c\/h3\u003e\n \u003cp\u003eAt 32\" wide and 17.75\" deep, this is a large enclosure carrying a 52-lb driver at 1500 watts RMS. Panel integrity is not optional. Every joint is CNC-cut to interlock, dado joints recess each panel into its mating surface, V-groove cuts at panel edges create a mechanical lock, and extensive internal bracing ties opposing walls and spans panel runs across the full enclosure volume. The result is a cabinet that stays rigid and acoustically inert under sustained high-power output.\u003c\/p\u003e\n\n \u003cdiv class=\"ps-card-grid\"\u003e\n \u003cdiv class=\"ps-card\"\u003e\n \u003cspan class=\"ps-card-label\"\u003eMDF\u003c\/span\u003e\n \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n \u003ch4\u003eLangboard Elite 3\/4\"\u003c\/h4\u003e\n \u003cp\u003eMill-certified panel stock. \u003cstrong\u003e48.5 lbs\/ft³ density\u003c\/strong\u003e, \u003cstrong\u003e200 psi internal bond\u003c\/strong\u003e, \u003cstrong\u003e410,000 psi MOE\u003c\/strong\u003e. Every panel traceable to published mill data.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ps-card\"\u003e\n \u003cspan class=\"ps-card-label\"\u003eJoinery\u003c\/span\u003e\n \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n \u003ch4\u003eDado + V-Groove CNC\u003c\/h4\u003e\n \u003cp\u003ePanels interlock mechanically before adhesive is applied. The joint holds independent of glue. Essential for an enclosure running \u003cstrong\u003e1500W RMS into a 13.5\" driver\u003c\/strong\u003e.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ps-card\"\u003e\n \u003cspan class=\"ps-card-label\"\u003eBracing\u003c\/span\u003e\n \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n \u003ch4\u003eExtensive Internal Bracing\u003c\/h4\u003e\n \u003cp\u003eWall-to-wall and panel-spanning bracing throughout. At this enclosure volume and power level, \u003cstrong\u003epanel resonance is eliminated structurally\u003c\/strong\u003e: not managed after the fact.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ps-card\"\u003e\n \u003cspan class=\"ps-card-label\"\u003eTerminal\u003c\/span\u003e\n \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n \u003ch4\u003eProline X ABS\/Carbon Fiber Terminal Cup\u003c\/h4\u003e\n \u003cp\u003eBuilt in-house. Stainless steel hardware. Copper ring terminals. \u003cstrong\u003ePre-wired 12-gauge OFC speaker wire\u003c\/strong\u003e: connect your amp and go.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ps-highlight\"\u003e\n \u003ch3\u003eWiring Options: Dual 1.5Ω Voice Coils\u003c\/h3\u003e\n \u003cp\u003eThe 13W7AE-D1.5 carries dual 1.5Ω voice coils, an uncommon impedance that requires deliberate amplifier matching.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eParallel wiring 0.75Ω final load.\u003c\/strong\u003e Requires a stable 1Ω or lower amplifier. Not recommended for most amplifiers.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eSeries wiring 3Ω final load.\u003c\/strong\u003e Closest to a standard 4Ω load. Most amplifiers stable at 4Ω will handle 3Ω without issue.\u003c\/p\u003e\n \u003cp\u003eThe most common real-world configuration for the 13W7AE is series wiring to 3Ω, matched to a high-current monoblock rated at 2–4Ω. Verify your amplifier's stable impedance rating before selecting this driver.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ps-alert\"\u003e\n \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The JL Audio 13W7AE-D1.5 is not included. This enclosure is built for the 13W7AE exclusively. It is not a universal 13\" or 15\" box. Verify mounting depth (10.5\") and cutout diameter (11.89\") against your install before ordering.\n \u003c\/div\u003e\n\n \u003cdiv class=\"ps-warranty\"\u003e\n \u003cdiv class=\"ps-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n \u003cp\u003eEvery Proline X Professional Series enclosure is covered by a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e against defects in materials and workmanship. Built in Tullahoma, Tennessee. Shipping included. No freight charges at checkout.\u003c\/p\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":40766954111065,"sku":"Pro13-P JL","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/professional-series-enclosure-jl-audio-13w7-ported-boxsubwoofer-enclosuresproline-x-865279.jpg?v=1761970094"},{"product_id":"2015-2023-ford-f150-f250-behind-seat-single-10-enclosure-loaded-jl-audio-10tw3-d4","title":"2015-2023 Ford F-150\/F-250 Behind-Seat Single 10\" Enclosure – Loaded with JL Audio 10TW3","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 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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 Vehicle Specific Series Enclosure for the JL Audio 10TW3-D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 10TW3-D4, 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\"\u003e0.50 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits JL Audio 10TW3-D4\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\"\u003e0.50\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\"\u003e0.960\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\"\u003e40 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\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003e10TW3-D4 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 JL Audio 10TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the 10TW3-D4's published sealed target, with the baffle bored to the 10TW3-D4's 9.625 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.25 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe 10TW3-D4 carries a published \u003cstrong\u003eFs of 32.3 Hz, Qts of 0.62 and Vas of 19.82 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\u003e0.50 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.50 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 10TW3-D4, 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 JL Audio 10TW3-D4, 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\"\u003eJL Audio 10TW3-D4 D2  |  Qts 0.62  |  Fs 32.3 Hz  |  Vas 19.82 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\u003e0.50 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.960\u003c\/td\u003e\n\u003ctd\u003e50.0 Hz\u003c\/td\u003e\n\u003ctd\u003e40.1 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\"\u003eJL Audio 10TW3-D4 Frequency Response | Sealed, 0.50 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 This alignment is calculated from the published T\/S for the 10TW3-D4 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 10TW3-D4 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":"Default Title","offer_id":42164585857113,"sku":"VS FD1 10-S JL 10TW3 D4","price":999.99,"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-jl-audio-10tw3proline-x-126818.jpg?v=1761970383"},{"product_id":"2015-2023-ford-f150-f250-behind-seat-pr-edition-single-10-enclosure-loaded-jl-audio-10tw3-d4","title":"2015-2023 Ford F-150\/F-250 Behind-Seat PR Edition Single 10\" Enclosure – Loaded with JL Audio 10TW3","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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.l{display:block;font-size:.78em;color:#94a3b8;text-transform:uppercase;letter-spacing:.6px;margin-top:5px;}\n.pl-section{padding:42px 36px;border-bottom:1px solid #1e293b;background:#020617;}\n.pl-section:nth-of-type(even){background:#0f172a;}\n.pl-section h3{color:#fff;font-size:1.45em;font-weight:700;margin:0 0 14px;border-left:4px solid #8b5cf6;padding-left:14px;}\n.pl-section p{margin:0 0 14px;color:#cbd5e1;}\n.pl-section strong{color:#fff;}\n.pl-grid{display:flex;flex-wrap:wrap;gap:18px;margin-top:8px;}\n.pl-card{flex:1 1 280px;background:#0f172a;border:1px solid #1e293b;border-top:3px solid #8b5cf6;border-radius:8px;padding:20px 22px;}\n.pl-card h4{color:#c4b5fd;margin:0 0 8px;font-size:1.04em;}\n.pl-card p{margin:0;font-size:.95em;color:#94a3b8;}\n.pl-card strong{color:#fff;}\n.pl-highlight{background:#2e1065;border-left:4px solid #8b5cf6;border-radius:0 8px 8px 0;padding:18px 22px;margin:18px 0;}\n.pl-highlight p{margin:0;color:#cbd5e1;}\n.pl-highlight strong{color:#fff;}\n.pl-enc{background:#0f172a;color:#cbd5e1;padding:42px 36px;border-bottom:1px solid #1e293b;}\n.pl-enc h3{color:#fff;font-size:1.45em;font-weight:700;margin:0 0 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 Vehicle Specific Series Enclosure for the JL Audio 10TW3-D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 10TW3-D4, 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\"\u003e0.50 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits JL Audio 10TW3-D4\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\"\u003e0.50\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\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003e10TW3-D4 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e15.2 mm\u003c\/span\u003e\u003cspan class=\"l\"\u003eone-way Xmax\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the JL Audio 10TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the 10TW3-D4's published target alignment, with the baffle bored to the 10TW3-D4's 9.625 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.25 in mounting depth.\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\u003e0.50 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.50 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\u003eFinished to Match\u003c\/h4\u003e\n\u003cp\u003eThe shell is wrapped in plush black carpet. Built one at a time 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 10TW3-D4, 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-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 10TW3-D4 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":"Default Title","offer_id":42164616724569,"sku":"VS FD1 10-PR JL 10TW3 D4","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-pr-edition-loaded-subwoofer-enclosure-jl-audio-10tw3-d4proline-x-882055.jpg?v=1761970387"},{"product_id":"2024-2025-ford-f150-f250-behind-seat-single-10-enclosure-loaded-jl-audio-10tw3-d4","title":"2024-2026 Ford F-150 Behind-Seat Single 10\" Enclosure – Loaded with JL Audio 10TW3","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 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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 Vehicle Specific Series Enclosure for the JL Audio 10TW3-D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 10TW3-D4, built to drop into the 2024-2026 F-150\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 JL Audio 10TW3-D4\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e2024-2026 F-150\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\"\u003e39 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\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003e10TW3-D4 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/2024_Ford_Tremor_f150outside_4da563e7-f5fd-4a63-8fed-1a76c3b48ce4_600x600.jpg?v=1738445466\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the JL Audio 10TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the 10TW3-D4's published sealed target, with the baffle bored to the 10TW3-D4's 9.625 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.25 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe 10TW3-D4 carries a published \u003cstrong\u003eFs of 32.3 Hz, Qts of 0.62 and Vas of 19.82 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\u003e0.60 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.50 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 10TW3-D4, 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 JL Audio 10TW3-D4, 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\"\u003eJL Audio 10TW3-D4 D2  |  Qts 0.62  |  Fs 32.3 Hz  |  Vas 19.82 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\u003e47.5 Hz\u003c\/td\u003e\n\u003ctd\u003e39.1 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\"\u003eJL Audio 10TW3-D4 Frequency Response | Sealed, 0.60 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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583.1,64.0 585.2,64.0 587.3,64.0 589.4,64.1 591.4,64.1 593.5,64.2 595.6,64.2 597.7,64.3 599.7,64.3 601.8,64.4 603.9,64.4 605.9,64.4 608.0,64.5 610.1,64.5 612.2,64.6 614.2,64.6 616.3,64.6 618.4,64.7 620.5,64.7 622.5,64.7 624.6,64.8 626.7,64.8 628.8,64.9 630.8,64.9 632.9,64.9 635.0,65.0 637.0,65.0 639.1,65.0 641.2,65.0 643.3,65.1 645.3,65.1 647.4,65.1 649.5,65.2 651.6,65.2 653.6,65.2 655.7,65.3 657.8,65.3 659.9,65.3 661.9,65.3 664.0,65.4\" 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 This alignment is calculated from the published T\/S for the 10TW3-D4 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 10TW3-D4 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":"Default Title","offer_id":42167607197785,"sku":"VS FD2 10-S JL 10TW3 D4","price":949.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/2024-2025-ford-f-150-f-250-direct-fit-ford-series-loaded-subwoofer-enclosure-jl-audio-10tw3-d4subwoofer-enclosuresproline-x-112865.jpg?v=1761970390"},{"product_id":"toyota-tacoma-direct-fit-subwoofer-enclosure-jl-audio-10tw3-loaded","title":"Toyota Tacoma Direct Fit Subwoofer Enclosure – JL Audio 10TW3 Loaded","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003e\u003cstrong\u003eProduct Description:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eElevate your audio experience\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003ein your 2015-2023 Toyota Tacoma with our premium Direct Fit Subwoofer Enclosure, expertly loaded with the industry-leading JL Audio 10TW3 subwoofer. Designed exclusively for Tacoma enthusiasts, this custom-fit sealed enclosure installs neatly behind the passenger-side rear seat, providing rich, powerful bass without sacrificing valuable cabin space.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePrecision-Fit Design:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003ePerfectly tailored for 2015-2023 Toyota Tacoma models\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eJL Audio 10TW3 Loaded:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003eLegendary shallow-mount subwoofer delivering impressive bass\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003eDurable, high-quality materials ensure long-lasting performance\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eOptimal Airspace:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e.6 cubic feet sealed enclosure enhances sound clarity and depth\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eEasy \u0026amp; Reversible Installation:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003eNo permanent modifications required, maintain factory interior\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBuilt to deliver \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003edeep, resonant bass\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003eand unparalleled sound quality, this subwoofer enclosure transforms ordinary drives into extraordinary journeys. Whether you're cruising city streets or exploring rugged terrain, enjoy every beat with remarkable clarity and powerful bass performance.\u003c\/span\u003e\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":42268544532569,"sku":"VS TOY 10-S JL 10TW3 D4","price":749.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/toyota-tacoma-direct-fit-subwoofer-enclosure-jl-audio-10tw3-loadedsubwoofer-enclosuresproline-x-382441.jpg?v=1761970432"},{"product_id":"2015-2023-ford-f150-f250-behind-seat-dual-10-enclosure-loaded-jl-audio-10tw3-d4","title":"2015-2023 Ford F-150\/F-250 Behind-Seat Dual 10\" Enclosure – Loaded with JL Audio 10TW3","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 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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 Vehicle Specific Series Enclosure for the JL Audio 10TW3-D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of JL Audio 10TW3-D4 drivers, 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\"\u003e1.05 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits JL Audio 10TW3-D4\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\"\u003e1.05\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\"\u003e0.947\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\"\u003e40 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\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003e10TW3-D4 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 JL Audio 10TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the 10TW3-D4's published sealed target, with the baffle bored to the 10TW3-D4's 9.625 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.25 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe 10TW3-D4 carries a published \u003cstrong\u003eFs of 32.3 Hz, Qts of 0.62 and Vas of 19.82 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\u003eOne Common Chamber\u003c\/h3\u003e\n\u003cp\u003eBoth 10TW3-D4 drivers share a single \u003cstrong\u003e1.05 cubic foot\u003c\/strong\u003e volume, which works out to 0.525 cubic feet of loading per driver. Behind seat enclosures are built common chamber when they carry two drivers.\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 pair of 10TW3-D4 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 JL Audio 10TW3-D4, 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\"\u003eJL Audio 10TW3-D4 D2  |  Qts 0.62  |  Fs 32.3 Hz  |  Vas 19.82 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\u003e0.53 cu ft \u003cspan class=\"pl-char\"\u003e1.05 cu ft common chamber, 0.525 per driver\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.947\u003c\/td\u003e\n\u003ctd\u003e49.3 Hz\u003c\/td\u003e\n\u003ctd\u003e39.8 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\"\u003eJL Audio 10TW3-D4 Frequency Response | Sealed, 0.53 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, 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583.1,63.4 585.2,63.4 587.3,63.5 589.4,63.6 591.4,63.6 593.5,63.7 595.6,63.7 597.7,63.8 599.7,63.8 601.8,63.9 603.9,63.9 605.9,64.0 608.0,64.0 610.1,64.1 612.2,64.1 614.2,64.2 616.3,64.2 618.4,64.3 620.5,64.3 622.5,64.3 624.6,64.4 626.7,64.4 628.8,64.5 630.8,64.5 632.9,64.6 635.0,64.6 637.0,64.6 639.1,64.7 641.2,64.7 643.3,64.7 645.3,64.8 647.4,64.8 649.5,64.8 651.6,64.9 653.6,64.9 655.7,64.9 657.8,65.0 659.9,65.0 661.9,65.0 664.0,65.1\" 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\u003e0.53 cu ft (Qtc 0.947)\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 10TW3-D4 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 10TW3-D4 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":"Default Title","offer_id":42272156942425,"sku":"","price":1499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/ford-f-150f-250-dual-10-subwoofer-enclosure-loaded-with-jl-audio-10tw3-pairenclosed-subwooferproline-x-449759.jpg?v=1761970448"},{"product_id":"proline-x-micro-series-sealed-10-enclosure-loaded-jl-audio-10tw3-d4","title":"Proline X Single 10\" Sealed Micro Series System | Loaded with JL Audio 10TW3","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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#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 JL Audio 10TW3-D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 10TW3-D4\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\"\u003e0.50 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits JL Audio 10TW3-D4\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\"\u003e0.50\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\"\u003e0.960\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\"\u003e40.1 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\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003e10TW3-D4 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/JL_Audio_10TW3-D4_in_Proline_X_Micro_Series_Enclosure_-_Stack_fab_II_600x600.jpg?v=1747715220\" alt=\"JL Audio 10TW3-D4 in Proline X Micro Series Enclosure - Stackfab II\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the JL Audio 10TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the 10TW3-D4's published sealed target, with the baffle bored to the 10TW3-D4's 9.625 in cutout with 8\/32 threaded inserts set on the back face, and clearance cut for its 3.25 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe 10TW3-D4 carries a published \u003cstrong\u003eFs of 32.3 Hz, Qts of 0.62 and Vas of 19.82 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\u003e0.50 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.50 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 10TW3-D4, 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 JL Audio 10TW3-D4, 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\"\u003eJL Audio 10TW3-D4 D2  |  Qts 0.62  |  Fs 32.3 Hz  |  Vas 19.82 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\u003e0.50 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.960\u003c\/td\u003e\n\u003ctd\u003e50.0 Hz\u003c\/td\u003e\n\u003ctd\u003e40.1 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\"\u003eJL Audio 10TW3-D4 Frequency Response | Sealed, 0.50 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, 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583.1,63.2 585.2,63.2 587.3,63.3 589.4,63.3 591.4,63.4 593.5,63.5 595.6,63.5 597.7,63.6 599.7,63.6 601.8,63.7 603.9,63.7 605.9,63.8 608.0,63.8 610.1,63.9 612.2,63.9 614.2,64.0 616.3,64.0 618.4,64.1 620.5,64.1 622.5,64.2 624.6,64.2 626.7,64.3 628.8,64.3 630.8,64.4 632.9,64.4 635.0,64.4 637.0,64.5 639.1,64.5 641.2,64.6 643.3,64.6 645.3,64.6 647.4,64.7 649.5,64.7 651.6,64.8 653.6,64.8 655.7,64.8 657.8,64.9 659.9,64.9 661.9,64.9 664.0,65.0\" 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\u003e0.50 cu ft (Qtc 0.960)\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 10TW3-D4 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 10TW3-D4 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":"Default Title","offer_id":42380340592729,"sku":"M10-S JL SF","price":699.99,"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-723913.jpg?v=1761970512"},{"product_id":"proline-x-micro-series-enclosure-fits-jl-10tw3","title":"Proline X Micro Series 10\" Sealed Enclosure - Fits JL Audio 10TW3","description":"\u003c!-- ============================================================\n     PROLINE X MICRO SERIES — JL AUDIO 10TW3\n     PRODUCT DESCRIPTION HTML\n     Color system: Green (#16a34a primary)\n     Enclosure-only SKU\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  \/* ── Hero ── *\/\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 {\n    color: #ffffff;\n    font-size: 1.65em;\n    font-weight: 800;\n    margin: 0 0 14px 0;\n    line-height: 1.25;\n  }\n  .ms-hero p {\n    color: #cbd5e1;\n    font-size: 1em;\n    margin: 0 0 24px 0;\n    max-width: 620px;\n    line-height: 1.7;\n  }\n  .ms-hero-stats {\n    display: flex;\n    gap: 28px;\n    flex-wrap: wrap;\n  }\n  .ms-stat {\n    text-align: center;\n  }\n  .ms-stat-num {\n    display: block;\n    color: #86efac;\n    font-size: 1.5em;\n    font-weight: 800;\n    line-height: 1;\n  }\n  .ms-stat-label {\n    display: block;\n    color: #94a3b8;\n    font-size: 0.72em;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n    margin-top: 4px;\n  }\n\n  \/* ── Sections ── *\/\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 {\n    color: #14532d;\n    font-size: 1.15em;\n    font-weight: 700;\n    margin: 0 0 14px 0;\n  }\n  .ms-section p {\n    color: #334155;\n    font-size: 0.97em;\n    margin: 0 0 12px 0;\n  }\n  \/* Langboard callout inline *\/\n  .ms-langboard {\n    font-weight: 700;\n    color: #14532d;\n  }\n  .ms-section p:last-child { margin-bottom: 0; }\n\n  \/* ── Highlight block ── *\/\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 {\n    color: #14532d;\n    margin: 0 0 10px 0;\n    font-size: 1.1em;\n    font-weight: 700;\n  }\n  .ms-highlight p {\n    margin-bottom: 10px;\n    color: #1e293b;\n    font-size: 0.97em;\n  }\n  .ms-highlight p:last-child { margin-bottom: 0; }\n\n  \/* ── Alert ── *\/\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  \/* ── Why-cards grid ── *\/\n  .ms-card-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 18px;\n    margin: 24px 0;\n  }\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 {\n    color: #14532d;\n    font-size: 1em;\n    font-weight: 700;\n    margin: 0 0 10px 0;\n  }\n  .ms-card-divider {\n    height: 2px;\n    background: #16a34a;\n    width: 32px;\n    margin-bottom: 12px;\n    border-radius: 2px;\n  }\n  .ms-card p {\n    font-size: 0.93em;\n    color: #475569;\n    margin: 0;\n    line-height: 1.65;\n  }\n  .ms-card p strong { color: #14532d; }\n\n  \/* ── Warranty bar ── *\/\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 {\n    background: #16a34a;\n    color: #ffffff;\n    font-size: 1em;\n    font-weight: 800;\n    padding: 10px 16px;\n    border-radius: 4px;\n    white-space: nowrap;\n  }\n  .ms-warranty p {\n    color: #cbd5e1;\n    font-size: 0.93em;\n    margin: 0;\n    line-height: 1.6;\n  }\n  .ms-warranty strong { color: #ffffff; }\n\n  \/* ── Fitment list ── *\/\n  .ms-fitment {\n    list-style: none;\n    margin: 14px 0 0 0;\n    padding: 0;\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 8px;\n  }\n  @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n  .ms-fitment li {\n    font-size: 0.93em;\n    color: #334155;\n    padding: 8px 12px;\n    background: #f0fdf4;\n    border-left: 3px solid #16a34a;\n    border-radius: 0 4px 4px 0;\n  }\n\n  \/* ── Divider ── *\/\n  .ms-divider {\n    border: none;\n    border-top: 1px solid #e2e8f0;\n    margin: 32px 0;\n  }\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 | Enclosure Only\u003c\/span\u003e\n    \u003ch2\u003eBuilt Around the JL Audio 10TW3.\u003cbr\u003eNot Adapted to It.\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10TW3-D4 has one of the most precisely engineered shallow-mount motor structures in the industry. That precision only pays off inside an enclosure engineered to match it. The Proline X Micro Series enclosure for the 10TW3 delivers an exact 0.50 cubic foot sealed environment, the volume JL Audio specifies for optimal acoustic damping, in a 5.25\" total depth that fits where conventional builds cannot.\u003c\/p\u003e\n    \u003cdiv class=\"ms-hero-stats\"\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e0.50\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\"\u003e5.25\"\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\"\u003e3.25\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eMax Mount Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003eCNC\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCut in Tennessee\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 10TW3-D4 subwoofer is not included. This enclosure is designed for customers who already own or are separately purchasing the 10TW3-D4 or 10TW3-D8.\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 1: Why This Enclosure --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eWhy the Enclosure Matters as Much as the Driver\u003c\/h3\u003e\n    \u003cp\u003eThe JL Audio 10TW3-D4 has a free-air resonance of 32.3 Hz, a Qts of 0.62, and a Vas of 19.82 liters. Those numbers tell you exactly what this driver needs from its enclosure: a sealed box in the 0.50 cubic foot range produces a system Qtc near 0.96, a slightly elevated damping curve that gives the 10TW3 the extension and transient control it was designed to deliver in compact sealed installs.\u003c\/p\u003e\n    \u003cp\u003eGeneric \"universal\" thin-box enclosures are built to an approximate size and sold across multiple driver models. Internal volume tolerances are loose, joints are glued without mechanical locking, and the panel mass is rarely sufficient to stay acoustically inert at high excursion levels. This enclosure is built to a defined spec for one driver. Internal volume is held to within 0.01 cubic foot. Every panel joint is CNC-cut for a mechanical dado fit before adhesive is applied. The result is a box that behaves the way the modeling says it should, consistently, from unit to unit.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 2: Stack Fab Construction --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eStack Fab Construction: Why Depth Is Not the Enemy\u003c\/h3\u003e\n    \u003cp\u003eThin enclosures have a structural problem that standard-depth boxes don't: less panel depth means less rigidity, which means more panel resonance. The Proline X Micro Series addresses this directly through stack-fab layering, CNC-cut MDF panels are layered and bonded in overlapping orientations so that no glue joint runs the full depth of any critical wall. The result is a high-mass, mechanically locked enclosure that resists flex at the panel level, not just at the corners.\u003c\/p\u003e\n    \u003cp\u003eEvery interior dimension is machined to maintain 0.50 cubic feet of net internal volume after accounting for driver displacement, terminal hardware, and polyfill. Polyfill is pre-installed from the factory, it increases the effective acoustic volume by slowing the speed of sound inside the enclosure, which extends low-frequency performance without adding external size.\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\u003eSpec-Matched to JL Audio's Published Data\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eJL Audio publishes an optimum sealed volume of \u003cstrong\u003e0.50 cubic feet\u003c\/strong\u003e for the 10TW3. This enclosure delivers exactly that, not approximately, not \"up to.\" Internal volume is machined to tolerance so the driver's Qtc lands where the T\/S parameters predict it.\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\u003e5.25\" Total: Driver Clears with Margin\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe 10TW3 requires \u003cstrong\u003e3.25\" of mounting depth\u003c\/strong\u003e. The Micro Series provides 4.5\" of usable internal depth, enough for full driver clearance including the rear magnet structure, with no contact risk at full excursion.\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-to-panel connection uses CNC-cut interlocking dado slots. The mechanical fit holds the joint in alignment under load. Adhesive seals the joint permanently. Neither alone is sufficient. Both together create a connection that will not loosen, shift, or leak under sustained high-excursion use.\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\u003eGold-Plated Terminal Cup: Pre-Wired from the Factory\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe enclosure ships with a \u003cstrong\u003egold-plated spring-loaded terminal cup\u003c\/strong\u003e already installed and pre-wired internally with \u003cstrong\u003e12-gauge oxygen-free copper\u003c\/strong\u003e run directly to the driver mounting location. Connect your amplifier run to the terminal cup, mount the driver to the threaded inserts, and you are done. 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\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003eFactory-Installed Polyfill\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 the effective volume of the enclosure, extending the 10TW3's low-frequency output without changing the external footprint. This is not a cosmetic addition. It is an acoustic tuning step built into the manufacturing process.\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\u003e9.625\" Cutout: Matches JL Audio Tab-Ear Spec\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe 10TW3 uses a tab-ear mounting system with a \u003cstrong\u003e9.625\" cutout diameter\u003c\/strong\u003e: this enclosure is machined to that exact spec. The mounting hole is not a generic 10\" cutout trimmed down. The baffle is cut for this driver specifically.\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\u003eThreaded Inserts, Machine Screw Mounting, Not Wood Screws\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe back side of the baffle is fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e. The 10TW3 mounts with machine screws threading into steel inserts, not wood screws biting into MDF. Machine screw mounting does not strip out under repeated removal, maintains consistent clamping force across all mounting points, and holds the driver flush against the baffle gasket without over-torquing any single corner.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- HIGHLIGHT: Installer Note --\u003e\n  \u003cdiv class=\"ms-highlight\"\u003e\n    \u003ch3\u003eReady to Mount. Ready to Wire.\u003c\/h3\u003e\n    \u003cp\u003eThe Micro Series enclosure ships fully prepped for installation. The \u003cstrong\u003egold-plated spring-loaded terminal cup\u003c\/strong\u003e is installed and pre-wired to the driver location with 12-gauge OFC. Connect your amplifier run and you are done on the wiring side. The baffle is fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e on the back face, the 10TW3 mounts with machine screws into steel inserts, not wood screws into MDF. No risk of stripped mounting holes on a future driver swap.\u003c\/p\u003e\n    \u003ch3 style=\"margin-top:18px;\"\u003eA Note on Impedance Options\u003c\/h3\u003e\n    \u003cp\u003eThe JL Audio 10TW3 is available in two impedance configurations: the \u003cstrong\u003e10TW3-D4\u003c\/strong\u003e (dual 4-ohm voice coils) and the \u003cstrong\u003e10TW3-D8\u003c\/strong\u003e (dual 8-ohm voice coils). This enclosure fits both. Cutout diameter, mounting depth, and internal volume are identical across D4 and D8 builds.\u003c\/p\u003e\n    \u003cp\u003eWith a D4: wire parallel for a 2-ohm load or series for an 8-ohm load. With a D8: wire parallel for a 4-ohm load or series for a 16-ohm load. Most amplifier pairings use the D4 wired to 2 ohms. Confirm your amplifier's stable impedance before selecting the driver variant.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FITMENT SECTION --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n    \u003cp\u003eAt 21.5\" × 14.5\" × 5.25\", this enclosure fits in spaces that rule out virtually every conventional sealed build. Common install locations:\u003c\/p\u003e\n    \u003cul class=\"ms-fitment\"\u003e\n      \u003cli\u003eUnder-seat: extended cab and crew cab trucks\u003c\/li\u003e\n      \u003cli\u003eTrunk corners: compact and mid-size sedans\u003c\/li\u003e\n      \u003cli\u003eSide cargo panels: SUVs and crossovers\u003c\/li\u003e\n      \u003cli\u003eBehind-seat: full-size truck cabs\u003c\/li\u003e\n      \u003cli\u003eHatch floor: sports cars and hatchbacks\u003c\/li\u003e\n      \u003cli\u003eUnder-bed storage: utility and work vehicles\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. Enclosures are 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. Panels are cut on ShopSabre CNC routers to maintain dimensional tolerances that manual fabrication cannot achieve consistently. Internal volume, dado joint depth, cutout diameter, and terminal cup placement are all held to spec on every unit, not just on the sample used to generate the product listing. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e is used across the full Micro Series build, a named, mill-documented board with published density 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":43075494641753,"sku":"M10-S JL","price":249.99,"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-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-enclosure-professional-series-fits-jl-audio-12w7-subwoofer","title":"Proline X Enclosure | Professional Series | Fits JL Audio 12W7","description":"\u003cstyle\u003e\n  .ps-wrap * { box-sizing: border-box; }\n  .ps-wrap { font-family: inherit; color: #1e293b; 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margin: 0 0 10px 0; font-size: 1.1em; font-weight: 700; }\n  .ps-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n  .ps-highlight p:last-child { margin-bottom: 0; }\n\n  .ps-alert {\n    background: #ffedd5;\n    border: 1px solid #ea580c;\n    border-radius: 6px;\n    padding: 14px 18px;\n    margin: 20px 0;\n    font-size: 0.93em;\n    color: #9a3412;\n  }\n  .ps-alert strong { color: #7c2d12; }\n\n  .ps-card-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 18px;\n    margin: 24px 0;\n  }\n  @media (max-width: 600px) { .ps-card-grid { grid-template-columns: 1fr; } }\n  .ps-card {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 3px solid #ea580c;\n    border-radius: 6px;\n    padding: 22px;\n  }\n  .ps-card-label {\n    display: inline-block;\n    background: #ea580c;\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  .ps-card h4 { color: #7c2d12; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ps-card-divider { height: 2px; background: #ea580c; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ps-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ps-card p strong { color: #7c2d12; }\n\n  .ps-warranty {\n    background: #0f172a;\n    border-left: 5px solid #ea580c;\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    flex-wrap: wrap;\n  }\n  .ps-warranty-badge { background: #ea580c; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ps-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ps-warranty strong { color: #ffffff; }\n\n  .ps-driver-link {\n    background: #fff7ed;\n    border: 1px solid #ea580c;\n    border-radius: 6px;\n    padding: 16px 22px;\n    margin: 20px 0;\n    display: flex;\n    align-items: center;\n    gap: 14px;\n    flex-wrap: wrap;\n  }\n  .ps-driver-link-label {\n    background: #ea580c;\n    color: #fff;\n    font-size: 0.7em;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    padding: 4px 10px;\n    border-radius: 3px;\n    white-space: nowrap;\n  }\n  .ps-driver-link p { color: #1e293b; font-size: 0.93em; margin: 0; }\n  .ps-driver-link a { color: #ea580c; font-weight: 700; text-decoration: none; }\n  .ps-driver-link a:hover { text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ps-wrap\"\u003e\n\n  \u003cdiv class=\"ps-hero\"\u003e\n    \u003cdiv class=\"ps-hero-badge\"\u003eProfessional Series\u003c\/div\u003e\n    \u003ch2\u003eA Correctly Built Box for the 12W7AE: Nothing Generic About It\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 12W7AE-3 has earned a reputation as a reference-grade 12\" driver for a reason: 29mm one-way Xmax, 1000 watts RMS, and a motor tuned for both output and accuracy. It also demands an enclosure built to its numbers. This box is spec'd to 2.25 cu ft net, tuned to 33Hz with 26 sq in of port area, and structured to stay rigid and accurate under sustained high-power use. Enclosure only. Driver not included.\u003c\/p\u003e\n    \u003cdiv class=\"ps-hero-stats\"\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e2.25\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003ecu ft net\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e33Hz\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003ePort tuning\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e1.5\"\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003eDouble-layer baffle\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e1000W\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003eRMS rated\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-driver-link\"\u003e\n    \u003cspan class=\"ps-driver-link-label\"\u003eCompatible Driver\u003c\/span\u003e\n    \u003cp\u003eBuilt exclusively for the \u003cstrong\u003eJL Audio 12W7AE-3\u003c\/strong\u003e. Full driver specs at \u003ca href=\"https:\/\/www.garmin.com\/en-US\/p\/1669677\/pn\/010-03031-00\/\" target=\"_blank\"\u003egarmin.com\u003c\/a\u003e.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-section\"\u003e\n    \u003ch3\u003eBuilt to the Driver's Numbers: Not a Generic Template\u003c\/h3\u003e\n    \u003cp\u003eThe 12W7AE-3 has a Qts of 0.482 and an Fs of 27.2Hz. That Qts sits at the edge of sealed and ported territory, and while the driver performs well in either alignment, ported is the correct call when output and low-frequency extension are the priority. JL Audio publishes 1.75 cu ft as their ported recommendation. This enclosure delivers 2.25 cu ft net, a deliberate step above JL's minimum, sized to complement the driver's Vas of 2.33 cu ft and produce a lower, smoother tuning response at 33Hz rather than a peaked output curve.\u003c\/p\u003e\n    \u003cp\u003eThe 26 sq in port area is calculated to handle the air displacement this driver generates at Xmax without port compression or chuffing at sustained power levels. At 1000 watts RMS into a 12\" driver with 29mm of one-way linear travel, port sizing is not optional. It is the difference between clean output and audible port noise at volume.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-section\"\u003e\n    \u003ch3\u003e1.5\" Double-Layer Baffle: Twelve-Point Mounting System\u003c\/h3\u003e\n    \u003cp\u003eThe 12W7AE-3, like every W7, mounts via twelve bolt positions around its flange. This enclosure's 1.5\" double-layer baffle, two full sheets of Langboard Elite MDF bonded and CNC-cut as a single unit, provides the rigidity and thread depth that twelve-point mounting requires. Threaded inserts are installed through the baffle matched to the 12W7AE's #10-32 bolt pattern. Metal-to-metal threading throughout. No wood screws. No hardware that loosens under the sustained vibration a 1000W motor produces.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-section\"\u003e\n    \u003ch3\u003eDado + V-Groove Joinery | Extensive Internal Bracing\u003c\/h3\u003e\n    \u003cp\u003eAt 34\" wide and 15\" deep, this enclosure covers serious panel area. Every joint is CNC-cut to interlock, dado joints recess each panel into its mating surface, V-groove cuts at panel edges create a mechanical lock independent of adhesive. Extensive internal bracing ties opposing walls and spans the long panel runs across the enclosure's width. The result is a cabinet that stays acoustically inert under sustained high-power output, walls that don't flex, airspace that stays constant, port geometry that doesn't shift.\u003c\/p\u003e\n\n    \u003cdiv class=\"ps-card-grid\"\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eMDF\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eLangboard Elite 3\/4\"\u003c\/h4\u003e\n        \u003cp\u003eMill-certified panel stock. \u003cstrong\u003e48.5 lbs\/ft³ density\u003c\/strong\u003e, \u003cstrong\u003e200 psi internal bond\u003c\/strong\u003e, \u003cstrong\u003e410,000 psi MOE\u003c\/strong\u003e. Every panel traceable to published mill data.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eJoinery\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eDado + V-Groove CNC\u003c\/h4\u003e\n        \u003cp\u003ePanels interlock mechanically before adhesive is applied. The joint holds independent of glue. Essential for an enclosure running \u003cstrong\u003esustained high-power output\u003c\/strong\u003e at this cabinet volume.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eBracing\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eExtensive Internal Bracing\u003c\/h4\u003e\n        \u003cp\u003eWall-to-wall and panel-spanning bracing throughout. At 34\" wide and 1000W RMS, \u003cstrong\u003epanel resonance is eliminated structurally\u003c\/strong\u003e: not managed after the fact.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eTerminal\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eProline X ABS\/Carbon Fiber Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eBuilt in-house. Stainless steel hardware. Copper ring terminals. \u003cstrong\u003ePre-wired 12-gauge OFC speaker wire\u003c\/strong\u003e: connect your amp and go.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-highlight\"\u003e\n    \u003ch3\u003eImpedance: Single 3Ω Voice Coil\u003c\/h3\u003e\n    \u003cp\u003eThe 12W7AE-3 runs a single 3Ω voice coil, a straightforward single-driver wiring situation with no parallel or series options. Your amplifier sees 3Ω directly.\u003c\/p\u003e\n    \u003cp\u003eMost amplifiers rated stable at 4Ω will handle a 3Ω load without issue. Amplifiers rated stable at 2Ω will have more headroom. Verify your amplifier's rated output at 3Ω or 4Ω before pairing, the 12W7AE-3's recommended power range is 400W–1000W RMS, so match accordingly. Do not attempt to run this driver at an impedance other than 3Ω.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-alert\"\u003e\n    \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The JL Audio 12W7AE-3 is not included. This enclosure is built for the 12W7AE-3 exclusively. Verify cutout diameter (10.5\") and mounting depth (9.5\") against your install before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-warranty\"\u003e\n    \u003cdiv class=\"ps-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003eEvery Proline X Professional Series enclosure is covered by a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e against defects in materials and workmanship. Built in Tullahoma, Tennessee. Shipping included. No freight charges at checkout.\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":479.99,"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-professional-series-fits-jl-audio-10w7-subwoofer","title":"Proline X Enclosure | Professional Series | Fits JL Audio 10W7","description":"\u003cstyle\u003e\n  .ps-wrap * { box-sizing: border-box; }\n  .ps-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; margin: 0 auto; }\n\n  .ps-hero {\n    background: linear-gradient(135deg, #0f172a 0%, #7c2d12 100%);\n    border-radius: 8px;\n    padding: 40px 36px;\n    margin-bottom: 32px;\n    position: relative;\n    overflow: hidden;\n  }\n  .ps-hero::before {\n    content: '';\n    position: absolute;\n    top: -40px; right: -40px;\n    width: 220px; height: 220px;\n    background: rgba(234,88,12,0.12);\n    border-radius: 50%;\n  }\n  .ps-hero-badge {\n    display: inline-block;\n    background: transparent;\n    border: 2px solid #ea580c;\n    color: #fdba74;\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  .ps-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n  .ps-hero p { color: #cbd5e1; font-size: 1em; margin: 0 0 24px 0; max-width: 660px; line-height: 1.7; }\n  .ps-hero-stats { display: flex; gap: 28px; flex-wrap: wrap; }\n  .ps-stat { text-align: center; }\n  .ps-stat-num { display: block; color: #fdba74; font-size: 1.5em; font-weight: 800; line-height: 1; }\n  .ps-stat-label { display: block; color: #94a3b8; font-size: 0.72em; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 4px; }\n\n  .ps-section {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 4px solid #ea580c;\n    border-radius: 6px;\n    padding: 28px 32px;\n    margin-bottom: 24px;\n  }\n  .ps-section:nth-child(odd) { background: #f8fafc; }\n  .ps-section h3 { color: #7c2d12; font-size: 1.15em; font-weight: 700; margin: 0 0 14px 0; }\n  .ps-section p { color: #334155; font-size: 0.97em; margin: 0 0 12px 0; }\n  .ps-section p:last-child { margin-bottom: 0; }\n\n  .ps-highlight {\n    background: #fff7ed;\n    border-left: 5px solid #ea580c;\n    padding: 22px 28px;\n    margin: 28px 0;\n    border-radius: 0 6px 6px 0;\n  }\n  .ps-highlight h3 { color: #7c2d12; margin: 0 0 10px 0; font-size: 1.1em; font-weight: 700; }\n  .ps-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n  .ps-highlight p:last-child { margin-bottom: 0; }\n\n  .ps-alert {\n    background: #ffedd5;\n    border: 1px solid #ea580c;\n    border-radius: 6px;\n    padding: 14px 18px;\n    margin: 20px 0;\n    font-size: 0.93em;\n    color: #9a3412;\n  }\n  .ps-alert strong { color: #7c2d12; }\n\n  .ps-card-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 18px;\n    margin: 24px 0;\n  }\n  @media (max-width: 600px) { .ps-card-grid { grid-template-columns: 1fr; } }\n  .ps-card {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-top: 3px solid #ea580c;\n    border-radius: 6px;\n    padding: 22px;\n  }\n  .ps-card-label {\n    display: inline-block;\n    background: #ea580c;\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  .ps-card h4 { color: #7c2d12; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ps-card-divider { height: 2px; background: #ea580c; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ps-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ps-card p strong { color: #7c2d12; }\n\n  .ps-warranty {\n    background: #0f172a;\n    border-left: 5px solid #ea580c;\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    flex-wrap: wrap;\n  }\n  .ps-warranty-badge { background: #ea580c; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ps-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ps-warranty strong { color: #ffffff; }\n\n  .ps-driver-link {\n    background: #fff7ed;\n    border: 1px solid #ea580c;\n    border-radius: 6px;\n    padding: 16px 22px;\n    margin: 20px 0;\n    display: flex;\n    align-items: center;\n    gap: 14px;\n    flex-wrap: wrap;\n  }\n  .ps-driver-link-label {\n    background: #ea580c;\n    color: #fff;\n    font-size: 0.7em;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    padding: 4px 10px;\n    border-radius: 3px;\n    white-space: nowrap;\n  }\n  .ps-driver-link p { color: #1e293b; font-size: 0.93em; margin: 0; }\n  .ps-driver-link a { color: #ea580c; font-weight: 700; text-decoration: none; }\n  .ps-driver-link a:hover { text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ps-wrap\"\u003e\n\n  \u003cdiv class=\"ps-hero\"\u003e\n    \u003cdiv class=\"ps-hero-badge\"\u003eProfessional Series\u003c\/div\u003e\n    \u003ch2\u003eReference-Grade 10\" Bass: Built to the W7AE's Exact Numbers\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10W7AE-3 does something rare. It delivers reference-grade sub-bass from a 10\" driver. With 23mm one-way Xmax, 750 watts RMS, and a motor tuned for accuracy at volume, it rewards an enclosure built to its parameters. This box is spec'd to 1.7 cu ft net, tuned to 33Hz with 22 sq in of port area, and built to stay rigid and accurate under sustained high-power use. Enclosure only. Driver not included.\u003c\/p\u003e\n    \u003cdiv class=\"ps-hero-stats\"\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e1.7\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003ecu ft net\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e33Hz\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003ePort tuning\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e1.5\"\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003eDouble-layer baffle\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-stat\"\u003e\n        \u003cspan class=\"ps-stat-num\"\u003e750W\u003c\/span\u003e\n        \u003cspan class=\"ps-stat-label\"\u003eRMS rated\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-driver-link\"\u003e\n    \u003cspan class=\"ps-driver-link-label\"\u003eCompatible Driver\u003c\/span\u003e\n    \u003cp\u003eBuilt exclusively for the \u003cstrong\u003eJL Audio 10W7AE-3\u003c\/strong\u003e. Full driver specs at \u003ca href=\"https:\/\/www.garmin.com\/en-US\/p\/1669677\/pn\/010-03208-00\/\" target=\"_blank\"\u003egarmin.com\u003c\/a\u003e.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-section\"\u003e\n    \u003ch3\u003eBuilt to the Driver's Numbers: Not a Generic Template\u003c\/h3\u003e\n    \u003cp\u003eThe 10W7AE-3 has a Qts of 0.537 and an Fs of 30.6Hz. That Qts sits above the typical ported threshold, this driver will perform in either sealed or ported alignment, but ported is the right call when the goal is extracting the 10W7AE's full low-frequency potential and output capability. JL Audio publishes 1.5 cu ft as their ported recommendation. This enclosure delivers 1.7 cu ft net. Sized above JL's minimum to give the driver more breathing room relative to its Vas of 1.28 cu ft and produce a smoother, more extended low-frequency response at 33Hz.\u003c\/p\u003e\n    \u003cp\u003eThe 22 sq in port area is calculated for the air displacement this driver produces at 23mm one-way Xmax at 750W. Port sizing at this enclosure volume keeps air velocity in check and eliminates port noise at sustained output levels. Small enclosures with undersized ports are where 10\" ported builds typically fail. This one doesn't cut corners on port area.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-section\"\u003e\n    \u003ch3\u003e1.5\" Double-Layer Baffle: Twelve-Point Mounting System\u003c\/h3\u003e\n    \u003cp\u003eThe 10W7AE-3 uses the same twelve-point #10-32 bolt pattern as the rest of the W7AE family. This enclosure's 1.5\" double-layer baffle, two full sheets of Langboard Elite MDF bonded and CNC-cut as a single unit, provides the rigidity and thread depth that twelve-point mounting demands. Threaded inserts through the baffle, metal-to-metal threading throughout. No wood screws into MDF. No hardware working loose under sustained vibration. The driver stays precisely clamped at every one of its twelve mounting points.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-section\"\u003e\n    \u003ch3\u003eDado + V-Groove Joinery | Extensive Internal Bracing\u003c\/h3\u003e\n    \u003cp\u003eA compact ported enclosure at 1.7 cu ft pressurizes efficiently, which means every panel joint carries load under output. Every joint in this enclosure is CNC-cut to interlock before adhesive is applied. Dado joints recess each panel into its mating surface. V-groove cuts at panel edges create a mechanical lock independent of glue. Extensive internal bracing ties opposing walls and spans panel runs throughout the cabinet. The airspace stays constant, the port geometry doesn't shift, and the bass that comes out of the port is what the driver put in, not a distorted version of it.\u003c\/p\u003e\n\n    \u003cdiv class=\"ps-card-grid\"\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eMDF\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eLangboard Elite 3\/4\"\u003c\/h4\u003e\n        \u003cp\u003eMill-certified panel stock. \u003cstrong\u003e48.5 lbs\/ft³ density\u003c\/strong\u003e, \u003cstrong\u003e200 psi internal bond\u003c\/strong\u003e, \u003cstrong\u003e410,000 psi MOE\u003c\/strong\u003e. Every panel traceable to published mill data.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eJoinery\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eDado + V-Groove CNC\u003c\/h4\u003e\n        \u003cp\u003ePanels interlock mechanically before adhesive is applied. The joint holds independent of glue. \u003cstrong\u003ecritical in a compact ported enclosure\u003c\/strong\u003e where internal pressure is high relative to cabinet volume.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eBracing\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eExtensive Internal Bracing\u003c\/h4\u003e\n        \u003cp\u003eWall-to-wall and panel-spanning bracing throughout. \u003cstrong\u003ePanel resonance is eliminated at the structure level\u003c\/strong\u003e, the bass you hear comes from the driver, not the box.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ps-card\"\u003e\n        \u003cspan class=\"ps-card-label\"\u003eTerminal\u003c\/span\u003e\n        \u003cdiv class=\"ps-card-divider\"\u003e\u003c\/div\u003e\n        \u003ch4\u003eProline X ABS\/Carbon Fiber Terminal Cup\u003c\/h4\u003e\n        \u003cp\u003eBuilt in-house. Stainless steel hardware. Copper ring terminals. \u003cstrong\u003ePre-wired 12-gauge OFC speaker wire\u003c\/strong\u003e: connect your amp and go.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-highlight\"\u003e\n    \u003ch3\u003eImpedance: Single 3Ω Voice Coil\u003c\/h3\u003e\n    \u003cp\u003eThe 10W7AE-3 runs a single 3Ω voice coil. Straightforward single-driver wiring with no parallel or series options. Your amplifier sees 3Ω directly.\u003c\/p\u003e\n    \u003cp\u003eMost amplifiers stable at 4Ω handle a 3Ω load without issue. The 10W7AE-3's recommended power range is 300W–750W RMS. Match your amplifier's rated output at 3Ω or 4Ω accordingly. Overdriving this driver significantly beyond 750W RMS risks thermal failure; the W7AE motor is optimized for accuracy and output within its rated range, not for absorbing sustained abuse above it.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-alert\"\u003e\n    \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The JL Audio 10W7AE-3 is not included. This enclosure is built for the 10W7AE-3 exclusively. Verify cutout diameter (8.74\") and mounting depth (8.0\") against your install before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ps-warranty\"\u003e\n    \u003cdiv class=\"ps-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003eEvery Proline X Professional Series enclosure is covered by a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e against defects in materials and workmanship. Built in Tullahoma, Tennessee. Shipping included. No freight charges at checkout.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43199590105177,"sku":"Pro JL 10W7","price":399.99,"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-10w7-subwoofersubwoofer-enclosuresproline-x-2130928.webp?v=1779355148"},{"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 the driver overdamps and loses low-end weight. Above 1.0 the Qtc drops and midbass tightness softens. 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-10-enclosure-jl-audio-10w6v3","title":"Performance Optimized Wedge Sealed 10\" Enclosure | JL Audio 10W6v3","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 10W6v3\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 10\" 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\"\u003e0.63 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e0.55 ft³ Net (JL Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e15\" × 12.25\" × 8.85\/13.25\"\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 10W6v3 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10W6v3 is one of the highest-caliber 10\" subwoofers on the market, 600 watts RMS continuous, a DMA-optimized motor derived from the W7AE flagship platform, a mineral-filled polypropylene cone with rubber surround, and a satin black cast-alloy frame that resists flex under real power. JL Audio designed the W6v3 to deliver flagship-caliber sound quality performance in compact sealed volumes, and JL specifies exactly 0.55 cubic feet net for the 10W6v3's optimum sealed alignment.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 10 for JL Audio W6 is engineered to hit that target precisely. 0.63 cubic feet gross internal volume minus the 10W6v3's driver displacement equals exactly 0.55 cubic feet net, the volume JL's engineers spec'd the W6v3 around, delivering the published F3 of 42.27 Hz and Qtc of 0.81. 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\u003e0.63 cubic feet gross = 0.55 cubic feet net after the 10W6v3's driver displacement. Exactly matches JL Audio's published optimum sealed volume for the 10W6v3 (Qtc 0.81, F3 42.27 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 (8.85\" at the top, 13.25\" 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 (15\" wide × 12.25\" tall) is where the 10W6v3 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 10W6v3: 0.55 cubic feet net internal. In that alignment the driver delivers F3 of 42.27 Hz, Qtc of 0.81, and Fc of 47.55 Hz, the response curve JL's engineers targeted when they designed the driver. The Performance Optimized Wedge Sealed 10 delivers 0.63 cubic feet gross internal, which after subtracting the 10W6v3's driver displacement lands at exactly 0.55 cubic feet 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 10W6v3 isn't one of them. JL engineered this driver with a specific Qtc target in mind, and volume changes shift Qtc noticeably. Below 0.55 cubic feet the driver overdamps and loses low-end weight. Above 0.55 the Qtc drops and midbass tightness softens. 0.55 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 10W6v3's exact mounting cutout specification. The 10W6v3's 6.89\" 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 8.85\" at the top to 13.25\" 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 10W6v3 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 0.55 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 10W6v3-D4 driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Already own your 10W6v3? 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 10W6v3 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10W6v3 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 10W6v3 presents a 2-ohm load. Wired in series, it presents 8 ohms. The 10W6v3 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 0.55 cubic feet net internal, JL Audio's published optimum sealed volume for the 10W6v3, 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":44528206839897,"sku":"PO 10-S W W6 BB","price":269.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871267929,"sku":"PO 10-S W W6 B","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SWW6Front.png?v=1786844991"},{"product_id":"performance-optimized-wedge-sealed-10-enclosure-jl-audio-10w3v3","title":"Performance Optimized Wedge Sealed 10\" Enclosure | JL Audio 10W3v3","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 10W3v3\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 10\" 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\"\u003e0.675 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e0.625 ft³ Net (JL Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e19.75\" × 12.5\" × 6.95\/11.5\"\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 10W3v3 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10W3v3 is the workhorse of JL's 10-inch subwoofer lineup, 500 watts RMS continuous, a mineral-filled polypropylene cone, an NBR rubber surround, and JL's proprietary Dynamic Motor Analysis system engineered into the motor. This is the driver that strikes an outstanding balance between power handling, enclosure requirements, and excursion for medium-power daily-driver systems, available in Single 2-ohm (10W3v3-2) or Single 4-ohm (10W3v3-4) configurations to match your amplifier.\u003c\/p\u003e\n    \u003cp\u003eJL specifies exactly 0.625 cubic feet net internal volume as the optimum sealed enclosure for the 10W3v3. The Performance Optimized Wedge Sealed 10 for JL Audio W3 delivers 0.675 cubic feet gross internal, which after subtracting the 10W3v3's 0.049 cubic foot driver displacement lands at 0.626 cubic feet net, essentially exact match to JL's published sealed spec, delivering the target F3 of 46.9 Hz and Qtc of 0.818.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e0.675 cubic feet gross = 0.626 cubic feet net after the 10W3v3's 0.049 cubic foot driver displacement. Essentially exact match to JL Audio's published optimum sealed volume for the 10W3v3 (Qtc 0.818, F3 46.9 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 (6.95\" at the top, 11.5\" 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 (19.75\" wide × 12.5\" tall) is where the 10W3v3 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 10W3v3: 0.625 cubic feet net internal. In that alignment the driver delivers F3 of 46.9 Hz, Qtc of 0.818, and Fc of 52.9 Hz, the response curve JL's engineers targeted when they designed the driver. The Performance Optimized Wedge Sealed 10 delivers 0.675 cubic feet gross internal, which after subtracting the 10W3v3's 0.049 cubic foot displacement lands at 0.626 cubic feet net. Right on JL's spec.\u003c\/p\u003e\n    \u003ch3\u003eWhat the JL Spec Delivers\u003c\/h3\u003e\n    \u003cp\u003eJL engineered the 10W3v3 for a Qtc of 0.818 in a 0.625 cubic foot sealed enclosure. That Qtc target sits slightly above the traditional \"flat\" 0.707 alignment, giving the driver a warm, impactful bass character that works well in daily-driven cars where cabin gain smooths out the response. Below 0.625 cubic feet the driver overdamps and midbass tightens up but low-end weight drops. Above 0.625 the Qtc drops toward 0.7 and the character shifts more neutral. 0.625 is where the driver sounds like the driver JL designed.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the 10W3v3's exact 9.0625\" cutout specification. The 10W3v3's 5.93\" mounting depth fits comfortably inside the cabinet, internal depth from the vertical baffle to the interior of the angled seat-side face ranges from 6.95\" at the top to 11.5\" 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 10W3v3 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 0.625 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 10W3v3-2 (2-ohm) or 10W3v3-4 (4-ohm) driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Already own your 10W3v3? 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 10W3v3 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10W3v3 is a single voice coil driver available in two impedance versions to match different amplifier configurations. 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 10W3v3-2 (Single 2-ohm) presents a 2-ohm load directly to your amplifier. The 10W3v3-4 (Single 4-ohm) presents a 4-ohm load. Pick the impedance version that matches your amplifier's stable-load requirements. Most modern class D monoblocks are stable at 2 ohms and deliver more power at that load, but 4-ohm operation is easier on both the amp and the driver for daily use.\u003c\/p\u003e\n    \u003cp\u003eThe 10W3v3 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 250 to 400 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\u003eRight on JL Audio's published optimum sealed volume for the 10W3v3, 0.625 cubic feet net internal, 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":44528213688409,"sku":"PO 10-S W W3 BB","price":259.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871235161,"sku":"PO 10-S W W3 B","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SWW3Front.png?v=1786844945"},{"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-13-enclosure-jl-audio-13w3v3-1","title":"Performance Optimized Wedge Sealed 13\" Enclosure | JL Audio 13W3v3","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 13W3v3\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 13.5\" 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\"\u003e1.85 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e1.75 ft³ Net (JL 2Ω Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e24\" × 16\" × 10.35\/16.2\"\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 13W3v3 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 13W3v3 is JL's oversized 13.5\" driver, a 600 watt RMS workhorse that moves 54% more air than the 12W3v3, delivering deeper extension and higher output at the same amplifier power level. Available in Single 2-ohm (13W3v3-2), Single 4-ohm (13W3v3-4), and Single 8-ohm (13W3v3-8) configurations, this driver uses JL's DMA-optimized motor, a mineral-filled polypropylene cone, and JL's NBR rubber surround with Floating Cone Attach Method for long-term reliability under sustained daily use.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 13 for JL Audio W3 is engineered to hit JL's exact 13W3v3-2 sealed specification. 1.85 cubic feet gross internal volume minus the 13W3v3's 0.096 cubic foot driver displacement equals 1.754 cubic feet net. Matching JL's published 1.750 cubic foot sealed spec for both the 2-ohm and 8-ohm variants. In that alignment, the driver delivers F3 of 37.7 Hz and Qtc of 0.84, deep, warm, high-impact bass in a trunk-friendly wedge cabinet.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e1.85 cubic feet gross = 1.754 cubic feet net after the 13W3v3's 0.096 cubic foot driver displacement. Exact match to JL Audio's published sealed spec for the 13W3v3-2 and 13W3v3-8 (Qtc 0.84, F3 37.7 Hz). The 13W3v3-4 variant also fits this cabinet, running slightly larger than its 1.5 cu ft spec for a Qtc around 0.82. 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 (10.35\" at the top, 16.2\" 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\" wide × 16\" tall) is where the 13W3v3 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 13W3v3. The 13W3v3-2 wants 1.750 cubic feet net (F3 37.7 Hz, Qtc 0.84). The 13W3v3-4 wants 1.500 cubic feet net (F3 40.4 Hz, Qtc 0.89). The 13W3v3-8 wants 1.750 cubic feet net (F3 39.6 Hz, Qtc 0.84). This cabinet is engineered specifically to hit the 1.75 cu ft target used by both the 2-ohm and 8-ohm variants: 1.85 cubic feet gross minus the 0.096 cubic foot driver displacement equals 1.754 cubic feet net. Essentially exact match.\u003c\/p\u003e\n    \u003ch3\u003eWhat the JL 2Ω Spec Delivers\u003c\/h3\u003e\n    \u003cp\u003eJL engineered the 13W3v3-2 for a Qtc of 0.84 in a 1.75 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. Combined with the 13.5\" cone's deep F3 of 37.7 Hz, this alignment produces a bass presentation that reaches lower AND hits harder than the smaller W3v3 drivers can match, the reason to step up to the 13\" is precisely this combination of depth and impact from a single driver. Listeners looking for a flatter, more analytical alignment can use the 13W3v3-4 in this cabinet instead, the -4 in a slightly-larger-than-spec 1.754 volume trends toward Qtc 0.82, still warm but flatter than the -2 and -8.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the 13W3v3's exact 12.5625\" cutout specification. The 13W3v3's 7.63\" mounting depth fits inside the cabinet, internal depth from the vertical baffle to the interior of the angled seat-side face ranges from 10.35\" at the top to 16.2\" 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. The 14\" outer diameter of the 13W3v3 sits within the 16\" tall baffle with adequate clearance for mounting flange.\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 13W3v3 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 1.75 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 13W3v3-2 (2-ohm), 13W3v3-4 (4-ohm), or 13W3v3-8 (8-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 and 8-ohm variants' 1.75 cu ft spec. Already own your 13W3v3? 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 13W3v3 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 13W3v3 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 13W3v3-2 (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 stable at 2 ohms. The 13W3v3-4 (Single 4-ohm) presents a 4-ohm load. Easier on both amp and driver for daily use. The 13W3v3-8 (Single 8-ohm) presents an 8-ohm load. Used mainly with high-voltage amp bridges or matched with class AB amplifiers.\u003c\/p\u003e\n    \u003cp\u003eThe 13W3v3 is rated for 600 watts RMS continuous, with JL Audio recommending amplifier power in the 150 to 600 watt RMS range. Aim for a clean, well-regulated amplifier delivering 400 to 600 watts RMS at your chosen impedance for balanced output and long-term reliability. JL Audio's own RD or XD series 600\/1 monoblocks are natural matches.\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 for the 13, in a Trunk-Load Wedge\u003c\/h2\u003e\n    \u003cp\u003e1.75 cubic feet net internal, JL Audio's published optimum sealed volume for the 13W3v3-2 and 13W3v3-8, in a trunk-friendly wedge geometry that fires the 13.5\" cone rearward into the trunk cavity. Deep extension, high impact, precise driver-specific engineering.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44528233381977,"sku":"PO 13-S W W3 BB","price":319.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589870809177,"sku":"PO 13-S W W3 B","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO13-SWW3Front.png?v=1786844860"},{"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-10-enclosure-jl-audio-10tw3-d4","title":"Performance Optimized Wedge Sealed 10\" Enclosure | JL Audio 10TW3","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 10TW3\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 10\" Shallow-Mount Sealed Wedge | Rear-Firing Trunk-Load for JL's Thin-Line 10TW3-D4\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e0.52 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e0.50 ft³ Net (JL Spec)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eUltra-Shallow Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e23\" × 13\" × 4.5\/9.25\"\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 10TW3-D4 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10TW3-D4 is JL's shallow-mount 10\" thin-line subwoofer, 10 inches of cone area with just 3.25\" of mounting depth, and 15.2mm of one-way linear excursion (more than the standard W3v3 despite the shallow packaging). JL's patented concentric tube cone architecture places the motor structure forward inside the injection-molded cone body, letting this driver deliver full-size 10\" bass in enclosures that a conventional 10\" driver couldn't fit. 400 watts RMS continuous with a mica-injected polypropylene cone, rubber surround, cast alloy basket, and JL's tab-ear mounting design.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 10 for JL Audio TW3 is engineered to hit JL's exact published sealed specification. 0.52 cubic feet gross internal volume minus the 10TW3-D4's driver displacement lands at 0.50 cubic feet net, exact match to JL's published 0.50 cubic foot sealed spec, delivering the Qtc 0.96 warm\/impactful alignment JL's engineers targeted for the TW3 series.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e0.52 cubic feet gross = 0.50 cubic feet net after the 10TW3-D4's driver displacement. Exact match to JL Audio's published optimum sealed volume for the 10TW3-D4 (Qtc 0.96, F3 just above 40 Hz). The ultra-shallow wedge geometry, 4.5\" deep at the top rising to 9.25\" at the bottom, is engineered around the TW3's 3.25\" 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 10TW3-D4 was engineered for one specific mission: full-size 10\" bass in vehicles and configurations where a standard 10\" enclosure won't fit. Extended-cab and crew-cab pickup trucks (where the driver commonly mounts under a rear seat that lifts up). Sports cars with shallow parcel-shelf areas. Sedans with low decklid clearance. SUVs where cargo floor height is critical. The 10TW3-D4 has been the reference under-seat subwoofer for years because of two specific numbers: 3.25\" mounting depth and 15.2mm one-way Xmax. Most shallow 10s give you one or the other. JL delivers both.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 10 for JL Audio TW3 solves the same space problem in trunk-load wedge form. The vertical trunk-lid-side face is only 4.5\" deep at the top, tapering to 9.25\" at the bottom, meaning the top of the cabinet slides under low parcel shelves and rear seat backs that a full-depth wedge could never clear. Combined with the TW3's own shallow mounting depth, this is one of the most vehicle-friendly full-size 10\" trunk-load 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, 9.25\" 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 (23\" wide × 13\" tall) is where the 10TW3-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\u003eCompact, Shallow Footprint\u003c\/h4\u003e\n        \u003cp\u003e23\" wide by 13\" tall by 4.5-9.25\" deep. Smaller cabinet than the 12\" TW3 wedge for tighter trunk installs, low-clearance SUV cargo floors, and coupe trunks where a 12\" simply won't fit. Same shallow top-face design principle: the 4.5\" top depth threads under obstructions that block conventional wedges.\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 0.50 cubic feet net internal as the recommended sealed enclosure for the 10TW3-D4. This is JL's own engineered target, the volume where the TW3's motor, suspension, and cone assembly deliver the sealed response their engineers designed the driver for. The Performance Optimized Wedge Sealed 10 delivers 0.52 cubic feet gross internal, which after subtracting the 10TW3-D4's driver displacement lands right at the 0.50 cubic foot JL spec.\u003c\/p\u003e\n    \u003ch3\u003eWhat the JL Spec Delivers\u003c\/h3\u003e\n    \u003cp\u003eThe 10TW3-D4 in its JL-spec 0.50 cu ft sealed alignment delivers a Qtc of approximately 0.96 with F3 just above 40 Hz, a slightly warm alignment with good upper-bass presence, ideal for daily-driven vehicles where cabin gain smooths out the low end. This is a musical, punchy character rather than a strictly flat one, which suits the typical use case for a shallow-mount driver in a truck, sports car, or compact vehicle. If you have room for a slightly larger enclosure (0.75 cu ft), the alignment flattens out to Qtc 0.86, but that's not this cabinet. This cabinet delivers exactly what JL specifies as optimum.\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 10TW3-D4's exact 9.625\" cutout specification. The 10TW3-D4's 3.25\" 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 3.75\" at the top edge to 8.5\" at the bottom (after 3\/4\" MDF panel thickness), with the driver's mounting position at cabinet center providing well over 5\" of clearance behind the motor. JL's no-pole-vent motor design permits mounting close to the rear wall of an enclosure, the driver requires only 0.25\" of rear clearance to breathe.\u003c\/p\u003e\n    \u003ch3\u003eTab-Ear Mounting\u003c\/h3\u003e\n    \u003cp\u003eThe TW3 uses JL's tab-ear mounting design, 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 9.625\" 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-9.25\" bottom-face depth transition over 13\" of height must be dimensionally perfect to hit both the JL-spec volume target and the correct 20-degree seat-side mating angle. Internal volume is verified on every unit to ensure the JL-spec 0.50 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 10TW3-D4 (Dual 4-ohm) or 10TW3-D8 (Dual 8-ohm) driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Most single-driver installs use the D4 wired parallel for a 2-ohm load. Already own your 10TW3? 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 10TW3-D4 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 10TW3-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 300-400 watt monoblock amps. This is the standard wiring for single-driver installs.\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\u003e\u003cstrong\u003eAlternative driver: 10TW3-D8.\u003c\/strong\u003e If you're building a multi-driver system, JL Audio also offers the 10TW3-D8 (Dual 8-ohm) variant, which pairs better in dual-driver configurations at 2 ohms total (each driver wired parallel to 4 ohms, then two drivers wired parallel to 2 ohms). Either D4 or D8 variant fits this cabinet identically.\u003c\/p\u003e\n    \u003cp\u003eThe 10TW3-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 10, in a Wedge That Actually Fits\u003c\/h2\u003e\n    \u003cp\u003e0.50 cubic feet net internal, JL Audio's published optimum sealed volume for the 10TW3-D4, in an ultra-shallow wedge geometry (4.5\" at the top) engineered around the TW3's 3.25\" mounting depth. Full-size 10\" cone area with 15.2mm Xmax, real JL Audio bass, in vehicles where a standard 10\" 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":44528245964889,"sku":"PO 10-S W TW3 BB","price":269.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871202393,"sku":"PO 10-S W TW3 B","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SWTW3Front.png?v=1786844823"},{"product_id":"performance-optimized-wedge-sealed-13-enclosure-jl-audio-13tw5v2","title":"Performance Optimized Wedge Sealed 13\" Enclosure | JL Audio 13TW5v2","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 13TW5v2\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 13.5\" Premium Shallow-Mount Sealed Wedge | Rear-Firing Trunk-Load for JL's Flagship Thin-Line\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e0.852 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\"\u003e28.34\" × 15.9\" × 4.12\/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 13TW5v2 in JL's Spec-Perfect Sealed Volume\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 13TW5v2 is JL's flagship thin-line subwoofer, a 13.5-inch cone driven by a massive 7-inch voice coil, packaged in a 2.625\" mounting depth footprint. Built around JL's patented concentric tube suspension with a Santoprene surround (a step up from the TW3's rubber surround), a mica-injected polypropylene cone, and JL's Dynamic Motor Analysis-optimized motor structure, this driver represents the current state of the art in shallow-mount subwoofer engineering. 600 watts RMS continuous, 11mm one-way Xmax, and enclosure requirements that fit where conventional 12s and 13s cannot.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 13 for JL Audio TW5 is engineered to hit JL's exact published sealed specification. 0.852 cubic feet gross internal volume minus the 13TW5v2's 0.052 cubic foot driver displacement equals 0.800 cubic feet net, exact match to JL's 0.80 cubic foot published sealed spec, delivering the alignment JL's engineers targeted for this flagship driver.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e0.852 cubic feet gross = 0.800 cubic feet net after the 13TW5v2's 0.052 cubic foot driver displacement. Exact match to JL Audio's published optimum sealed volume for the 13TW5v2. The ultra-shallow wedge geometry, 4.12\" deep at the top rising to 9.89\" at the bottom, is engineered around the TW5's 2.625\" 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 TW5v2 Exists (Full-Size 13.5\" Bass in a 2.625\" Footprint)\u003c\/h2\u003e\n    \u003cp\u003eThe 13TW5v2 was engineered around a single premise: what if you could get flagship 13.5\" subwoofer performance in a mounting depth that fits under a truck seat, behind a sports car parcel shelf, or in the tight cargo bay of a compact SUV? JL's answer is the concentric tube suspension system, a patented architecture that supports a 7-inch voice coil and delivers 11mm of one-way Xmax while collapsing the entire driver profile to just 2.625\" of mounting depth.\u003c\/p\u003e\n    \u003cp\u003eThe result is a driver that sits in JL's lineup between the standard W3v3 and W6v3 in market position, but occupies its own unique category in cabinet requirements. JL specifies exactly 0.80 cubic feet net internal for the sealed alignment. Smaller than what a standard 12\" W6v3 requires (1.0 cu ft), let alone what a standard 13\" W3v3 wants (1.5-1.75 cu ft depending on impedance). And the mounting depth is less than half the 7.63\" that the standard 13W3v3 requires. This is a driver that lets you install a real 13.5\" cone in vehicles where a 13W3v3 or 13W6v3 simply cannot fit.\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 (4.12\" at top, 9.89\" at bottom) matches that lean, tucking against the seat back with no wasted gap. The ultra-shallow 4.12\" 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 (28.34\" wide × 15.9\" tall) is where the 13TW5v2 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 in shallow-mount 13.5\" 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\u003e13.5\" Cone, Slim Cabinet\u003c\/h4\u003e\n        \u003cp\u003e28.34\" wide by 15.9\" tall by 4.12-9.89\" deep. Substantially smaller in every dimension than a full-depth 13W3v3 enclosure. The 4.12\" top depth is the standout number: this cabinet's top edge fits under obstructions that no full-depth 13\" wedge could clear.\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 13TW5v2: 0.80 cubic feet net internal. This spec is JL's own engineered target for the driver, the volume where the TW5's concentric tube suspension, motor structure, and cone assembly deliver the balanced response their engineers designed the driver for. The Performance Optimized Wedge Sealed 13 delivers 0.852 cubic feet gross internal, which after subtracting the 13TW5v2's 0.052 cubic foot displacement lands exactly at the 0.80 cubic foot JL spec.\u003c\/p\u003e\n    \u003ch3\u003eSealed Only (Never Ported)\u003c\/h3\u003e\n    \u003cp\u003eJL Audio specifically optimizes the 13TW5v2 for sealed enclosures only. Ported operation significantly increases the risk of cone unloading (over-excursion below the port tuning frequency), which can permanently damage the unique concentric tube suspension system. This cabinet is engineered for exactly that reason: a sealed alignment at JL's exact spec, with no venting, no port tuning to worry about, and no risk of suspension damage from unloading.\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 13TW5v2's exact 12.5\" cutout specification. The 13TW5v2's 2.625\" 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 3.37\" at the top edge to 9.14\" at the bottom (after 3\/4\" MDF panel thickness), with the driver's mounting position at cabinet center providing over 5.6\" of clearance behind the motor. The 14.2\" overall driver diameter fits within the 15.9\" tall baffle with room for the mounting flange, and the 13.5\" bolt hole circle is pre-drilled with 8\/32 threaded inserts.\u003c\/p\u003e\n    \u003ch3\u003eDamping and Cabinet Considerations\u003c\/h3\u003e\n    \u003cp\u003eThe 13TW5v2 is highly air-displacement sensitive due to its concentric tube suspension. Over-damping with excessive polyfill can restrict cone motion and choke the low end. The Performance Optimized Wedge Sealed 13 uses a light polyfill layer on the interior side walls only, no packing around the driver, no over-stuffed cabinets. Just enough damping to control internal reflections without impeding the suspension's freedom to move.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Premium Driver 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. Critical in a shallow cabinet housing a 600W RMS driver: panel resonance would color the sound and MDF creep would allow air leaks over time. 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 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\u003eStandard Round Baffle Cutout\u003c\/h4\u003e\n        \u003cp\u003eUnlike the TW3's tab-ear mounting, the TW5v2 uses a standard perimeter mounting flange with 13.5\" bolt circle. The 12.5\" cutout is CNC-machined with the bolt pattern pre-drilled and 8\/32 threaded inserts pressed into the baffle backside. Stainless steel machine screws included, installer's choice of pan-head or button-head cosmetically, both mechanically identical.\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 4.12\" top-face-to-9.89\" bottom-face depth transition over 15.9\" of height must be dimensionally perfect to hit both the JL-spec 0.80 cu ft net target and the correct 20-degree seat-side mating angle. Internal volume is verified 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 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 13TW5v2-2 (Single 2-ohm) or 13TW5v2-4 (Single 4-ohm) driver directly to your order and we'll ship the complete loaded system, ready to wire to your amplifier. Already own your 13TW5v2? 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 13TW5v2 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe JL Audio 13TW5v2 is a single-voice-coil driver available in two 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\u003e\u003cstrong\u003e13TW5v2-2 (Single 2-ohm):\u003c\/strong\u003e Presents a 2-ohm load directly to your amplifier, the higher-output configuration, ideal for modern class D monoblocks stable at 2 ohms. Recommended for maximizing power transfer and SPL output. Most single-driver installs pair with a class D monoblock at 2 ohms delivering the TW5v2's rated 400-600 watts RMS.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003e13TW5v2-4 (Single 4-ohm):\u003c\/strong\u003e Presents a 4-ohm load, easier on both amp and driver, ideal for dual-driver installs (two 4-ohm drivers wired in parallel present a 2-ohm total load) or with amplifiers optimized for 4-ohm output.\u003c\/p\u003e\n    \u003cp\u003eThe 13TW5v2 is rated for 600 watts RMS continuous with a 250-600 watt RMS recommended amplifier range. Aim for a well-regulated monoblock delivering 400-600 watts RMS at your chosen impedance. Important: this driver benefits from a subsonic filter set around 25-30 Hz to prevent over-excursion below its Fs (27.6 Hz). Set your amplifier's active low-pass filter between 80 and 100 Hz for musical accuracy.\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. Active crossovers only.\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 Flagship 13.5\" Thin-Line, in a Trunk-Load Wedge That Fits\u003c\/h2\u003e\n    \u003cp\u003e0.80 cubic feet net internal, JL Audio's published optimum sealed volume for the 13TW5v2, in an ultra-shallow wedge geometry (4.12\" at the top) engineered around the TW5's 2.625\" mounting depth. Full-size 13.5\" cone area, 600 watts RMS, premium Santoprene suspension, in vehicles where a standard 13\" 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":44528262578265,"sku":"PO 13-S W TW5 BB","price":329.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871890521,"sku":"PO 13-S W TW5 B","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178.webp?v=1779355146"},{"product_id":"performance-optimized-down-fire-sealed-10-enclosure-jl-audio-10tw3-d4","title":"Performance Optimized Down Fire Sealed 10\" Enclosure | JL Audio 10TW3","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 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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:#d99058;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 10TW3-D4\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e0.50 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eJL Sealed Optimum\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.50\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\"\u003e0.960\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e40.1 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e4.9375 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 10TW3-D4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the 10TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. The baffle is bored to the 10TW3-D4's \u003cstrong\u003e9.625 inch cutout\u003c\/strong\u003e, 244mm to JL Audio's own spec, and the internal height is set by the driver's \u003cstrong\u003e3.25 inch mounting depth\u003c\/strong\u003e. The finished cabinet stands \u003cstrong\u003e4.9375 inches tall\u003c\/strong\u003e on a 30 by 15 inch footprint, which puts it under seats where almost nothing else will go.\u003c\/p\u003e\n\u003cp\u003eThe 10TW3-D4 is a dual 4-ohm subwoofer rated 400 watts RMS and 800 watts peak, with \u003cstrong\u003e15.2mm of one-way linear excursion\u003c\/strong\u003e. Polymer and mica composite cone, synthetic rubber surround, cast alloy frame with tab-ear mounting, and a 2 inch aluminum voice coil. JL's patented Thin-Line architecture reworks the motor and suspension geometry so the cone can travel that far in a frame this short.\u003c\/p\u003e\n\u003cp\u003e15.2mm of Xmax on a shallow 10 is a serious figure. Most drivers in this category run 8 to 13mm, and excursion is what produces output at low frequencies. Cone area alone does not do it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.50 cubic feet net\u003c\/strong\u003e, which matches JL Audio's published sealed optimum exactly. Gross internal volume is 0.57 cubic feet before panel thickness, bracing and the driver's own displacement are taken out.\u003c\/p\u003e\n\u003cp\u003eThat volume produces \u003cstrong\u003eQtc 0.960 with a predicted F3 of 40.1 Hz\u003c\/strong\u003e, computed from JL's published Thiele-Small parameters of Fs 32.3 Hz, Qts 0.620 and Vas 19.82 liters. Qtc 0.707 is the textbook maximally flat sealed alignment. This enclosure lands at 0.960. Flat anechoic response, well controlled transients, and a clean 12 dB per octave rolloff that integrates naturally with cabin gain.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eJL publishes a sealed range of 0.50 to 0.75 cubic feet. Going to the top of that range drops Qtc to roughly 0.64, which is more damped than the target, and buys only a couple of hertz of extension. On a down fire cabinet the extra volume also costs height, and height is the entire reason to choose a shallow driver. Final impedance is set at the driver: 2 ohms with the two 4-ohm coils in parallel, 8 ohms in series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003eAll external dimensions are measured in the down fire position: \u003cstrong\u003e30 inches wide, 15 inches deep, 4.9375 inches tall\u003c\/strong\u003e. The driver fires down into the floor.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, which matters on a cabinet under 5 inches tall.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003ePerimeter Cross-Brace\u003c\/h4\u003e\n\u003cp\u003eCross-bracing runs the perimeter and polyfill is pre-installed. The driver lands on \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless steel machine screws included, so the baffle takes repeated removal without stripping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates the 10TW3-D4 at \u003cstrong\u003e400 watts RMS\u003c\/strong\u003e and 800 watts peak, and recommends 200 to 400 watts of amplifier power. Aim for the top of that range rather than the bottom. Sensitivity is 82.10 dB at 1 watt and 1 meter, which is on the low side. That is the tradeoff for getting 15.2mm of excursion into a 3.25 inch frame: the motor prioritizes travel and control over efficiency, so underpowering it leaves real output unused.\u003c\/p\u003e\n\u003cp\u003ePublished driver response is 24 to 200 Hz. Firing down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, and in-car response extends well below the anechoic figure.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own JL Audio 10TW3-D4; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eEvery panel is machined to this driver's cutout, mounting depth and displacement, then assembled, carpeted and inspected one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540631285849,"sku":"PO 10-S DF TW3","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SDFTW3Front.webp?v=1787247896"},{"product_id":"performance-optimized-down-fire-sealed-12-enclosure-jl-audio-12tw3-d4","title":"Performance Optimized Down Fire Sealed 12\" Enclosure | JL Audio 12TW3","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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 12\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 12TW3-D4\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e0.80 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eDeepest Single Driver Reach\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-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=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.943\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e38.0 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e6.4375 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 12TW3-D4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the 12TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. The baffle is bored to the 12TW3-D4's \u003cstrong\u003e11.625 inch cutout\u003c\/strong\u003e, the internal height is set by the driver's \u003cstrong\u003e3.50 inch mounting depth\u003c\/strong\u003e, and the volume lands exactly on the 0.80 cubic feet JL Audio publishes as the sealed optimum for this driver.\u003c\/p\u003e\n\u003cp\u003eThe 12TW3-D4 is a dual 4-ohm subwoofer rated \u003cstrong\u003e400 watts RMS and 800 watts peak\u003c\/strong\u003e, with \u003cstrong\u003e15.2mm of one-way linear excursion\u003c\/strong\u003e. Mica-injected polypropylene cone, rubber surround, aluminum-alloy heat-dissipating dust cap, cast alloy frame with tab-ear mounting, and a 2.5 inch aluminum voice coil. JL Audio's patented Thin-Line architecture and Concentric Tube Suspension are what make that excursion possible in a frame three and a half inches deep. A conventional spider and surround would let the cone rock at that travel in that little space; the concentric tube arrangement constrains the moving assembly along its axis so the full 15.2mm is usable.\u003c\/p\u003e\n\u003cp\u003eThe published parameters are unusual for a shallow driver: \u003cstrong\u003eFs of 26.46 Hz, Qts of 0.531, and 48.73 liters of Vas\u003c\/strong\u003e, with 539 cm² of cone area. A low free-air resonance and a genuinely low Qts in the same short frame are rare, and together they are why this cabinet predicts an F3 of 38.0 Hz, the deepest single driver figure in the Down Fire line.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e0.89 cubic feet gross\u003c\/strong\u003e and \u003cstrong\u003e0.80 cubic feet net\u003c\/strong\u003e. Net is what the driver actually sees, after panel thickness, perimeter cross-bracing and the driver's own displacement are subtracted, and 0.80 is JL Audio's own published sealed optimum for the 12TW3-D4.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eAt 0.80 net the system lands at \u003cstrong\u003eQtc 0.943\u003c\/strong\u003e, above the 0.707 maximally flat reference, so there is a little lift near the corner rather than a textbook flat curve. Predicted F3 is \u003cstrong\u003e38.0 Hz\u003c\/strong\u003e anechoic. Firing down into the floor, that sealed rolloff meets rising cabin gain below 60 Hz, so in-car response extends well below the anechoic figure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003ePerimeter cross-bracing carries the panels and polyfill is pre-installed. The driver lands on 8\/32 threaded inserts with stainless steel machine screws included, and every external dimension is stated as measured in the down fire position.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, which matters with an 11.625 inch cutout in a cabinet this shallow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDeepest Single Driver Reach\u003c\/h4\u003e\n\u003cp\u003eA \u003cstrong\u003e3.50 inch mounting depth\u003c\/strong\u003e keeps the finished cabinet to 6.4375 inches tall in the down fire position, and the driver's 26.46 Hz resonance carries a predicted \u003cstrong\u003e38.0 Hz F3\u003c\/strong\u003e, the deepest single driver figure in the Down Fire line.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates the 12TW3-D4 at \u003cstrong\u003e400 watts RMS and 800 watts peak\u003c\/strong\u003e and recommends 200 to 400 watts of amplifier power. Aim at the top of that range. Sensitivity is 82 dB at 1 watt, which is low, and that is the price of getting 15.2mm of excursion and a 26.46 Hz resonance into a 3.50 inch frame. Underpowering this driver leaves real output unused.\u003c\/p\u003e\n\u003cp\u003eThe coils are dual 4-ohm, so final impedance is set at the driver: 2 ohms with the coils in parallel, 8 ohms in series. Confirm the resulting load against your amplifier's minimum stable impedance before powering the system.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own JL Audio 12TW3-D4; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eOne cutout, one mounting depth, one volume, chosen for the JL Audio 12TW3-D4 and nothing else. Machined on ShopSabre CNC routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540634529881,"sku":"PO 12-S DF TW3","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SDFTW3Front.png?v=1787247235"},{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-jl-audio-10tw3-d4","title":"Performance Optimized Down Fire Sealed Dual 10\" Enclosure | JL Audio 10TW3","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%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 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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:#d99058;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Dual 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of JL Audio 10TW3-D4 subwoofers\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.00 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.00\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net total\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.960\u003c\/span\u003e\u003cspan class=\"l\"\u003eQtc per chamber\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e40.1 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 per driver\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e7.6875 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 10TW3-D4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around a Pair of 10TW3-D4s\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. Both baffle positions are bored to the 10TW3-D4's \u003cstrong\u003e9.625 inch cutout\u003c\/strong\u003e, 244mm to JL Audio's own spec, and the internal height is set by the driver's \u003cstrong\u003e3.25 inch mounting depth\u003c\/strong\u003e. The finished cabinet stands \u003cstrong\u003e7.6875 inches tall\u003c\/strong\u003e on the same 30 by 15 inch footprint as the single, and delivers roughly 6 dB more maximum output.\u003c\/p\u003e\n\u003cp\u003eEach 10TW3-D4 is a dual 4-ohm subwoofer rated 400 watts RMS and 800 watts peak, with \u003cstrong\u003e15.2mm of one-way linear excursion\u003c\/strong\u003e. Across the pair that is \u003cstrong\u003e800 watts RMS combined\u003c\/strong\u003e and 730 cm² of cone area. Polymer and mica composite cones, synthetic rubber surrounds, cast alloy frames with tab-ear mounting, and 2 inch aluminum voice coils.\u003c\/p\u003e\n\u003cp\u003e15.2mm of Xmax on a shallow 10 is a serious figure. Most drivers in this category run 8 to 13mm, and excursion is what produces output at low frequencies. Two of them in a box under 8 inches tall adds up to real displacement capability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eThis is a two chamber cabinet. Each driver gets \u003cstrong\u003e0.50 cubic feet net\u003c\/strong\u003e, matching JL Audio's published sealed optimum exactly, for \u003cstrong\u003e1.00 cubic feet net total\u003c\/strong\u003e. Total gross internal volume is 1.14 cubic feet before panel thickness, the divider, bracing and driver displacement are taken out.\u003c\/p\u003e\n\u003cp\u003ePer chamber that produces \u003cstrong\u003eQtc 0.960 with a predicted F3 of 40.1 Hz\u003c\/strong\u003e, identical to the single driver cabinet, computed from JL's published Thiele-Small parameters of Fs 32.3 Hz, Qts 0.620 and Vas 19.82 liters. Qtc 0.707 is the textbook maximally flat sealed alignment. This enclosure lands at 0.960.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eTwo drivers sharing a single sealed volume interact acoustically: each driver's compression phase becomes the pressure environment the other is working against, which smears transient response and blurs the alignment either would have on its own. A full height bonded divider removes that entirely. Final impedance is set at the drivers, and both drivers must be wired identically so power splits evenly between chambers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003eAll external dimensions are measured in the down fire position: \u003cstrong\u003e30 inches wide, 15 inches deep, 7.6875 inches tall\u003c\/strong\u003e. Both drivers fire down into the floor.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eBoth baffle positions are \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so each driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance at each position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne Proline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e in parallel to both driver positions. Side mounted so it stays accessible with the baffles facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA bonded \u003cstrong\u003efull height 3\/4 inch MDF divider\u003c\/strong\u003e splits the cabinet into two sealed chambers, each with its own 0.50 cubic feet net and its own pre-installed polyfill. Standing design rule on every Proline X dual sealed build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates each 10TW3-D4 at \u003cstrong\u003e400 watts RMS\u003c\/strong\u003e and 800 watts peak, and recommends 200 to 400 watts per driver, so 800 watts RMS across the pair. Aim for the top of that range. Sensitivity is 82.1 dB at 1 watt and 1 meter, which is on the low side. That is the tradeoff for getting 15.2mm of excursion into a 3.25 inch frame: these motors prioritize travel and control over efficiency, so underpowering them leaves real output unused.\u003c\/p\u003e\n\u003cp\u003eFiring down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, and in-car response extends well below the anechoic figure. Confirm the load your wiring choice presents against your amplifier's minimum stable impedance before powering the system.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own pair of JL Audio 10TW3-D4 subwoofers; the drivers are purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eTwo chambers, two baffles, both machined to this driver's cutout, mounting depth and displacement, then assembled, carpeted and inspected one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540637675609,"sku":"PO 10D-S DF TW3","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10D-SDFTW3Front.png?v=1787245347"},{"product_id":"performance-optimized-down-fire-sealed-dual-12-enclosure-jl-audio-12tw3-d4","title":"Performance Optimized Down Fire Sealed Dual 12\" Enclosure | JL Audio 12TW3","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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Dual 12\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of JL Audio 12TW3-D4 subwoofers\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.60 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.60\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net total\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.943\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc per driver\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e38.0 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e10.75 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 12TW3-D4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the 12TW3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. Both baffle positions are bored to the 12TW3-D4's \u003cstrong\u003e11.625 inch cutout\u003c\/strong\u003e, the chamber depth is set by the driver's \u003cstrong\u003e3.50 inch mounting depth\u003c\/strong\u003e, and each chamber lands exactly on the 0.80 cubic feet JL Audio publishes as the sealed optimum for this driver.\u003c\/p\u003e\n\u003cp\u003eEach 12TW3-D4 is a dual 4-ohm subwoofer rated \u003cstrong\u003e400 watts RMS and 800 watts peak\u003c\/strong\u003e, with \u003cstrong\u003e15.2mm of one-way linear excursion\u003c\/strong\u003e. Across the pair that is \u003cstrong\u003e800 watts RMS combined\u003c\/strong\u003e and 1078 cm² of cone area. Mica-injected polypropylene cones, rubber surrounds, aluminum-alloy heat-dissipating dust caps, cast alloy frames, and 2.5 inch aluminum voice coils. JL Audio's patented Thin-Line architecture and Concentric Tube Suspension are what keep those cones traveling straight through that much excursion in frames three and a half inches deep.\u003c\/p\u003e\n\u003cp\u003eThe published parameters are unusual for a shallow driver: \u003cstrong\u003eFs of 26.46 Hz, Qts of 0.531, and 48.73 liters of Vas\u003c\/strong\u003e per driver. A low free-air resonance and a genuinely low Qts in the same short frame are rare, and together they are why each chamber predicts an F3 of 38.0 Hz, the deepest figure anywhere in the Down Fire program, delivered here twice over.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e1.78 cubic feet gross\u003c\/strong\u003e and \u003cstrong\u003e1.60 cubic feet net total\u003c\/strong\u003e, which is \u003cstrong\u003e0.80 cubic feet net per driver\u003c\/strong\u003e. Net is what each driver actually sees, after panel thickness, the chamber divider, perimeter cross-bracing and the driver's own displacement are subtracted, and 0.80 is JL Audio's own published sealed optimum for the 12TW3-D4.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eAt 0.80 net per chamber each driver lands at \u003cstrong\u003eQtc 0.943\u003c\/strong\u003e, above the 0.707 maximally flat reference, so there is a little lift near the corner rather than a textbook flat curve. Predicted F3 is \u003cstrong\u003e38.0 Hz\u003c\/strong\u003e per driver, anechoic. Firing down into the floor, that sealed rolloff meets rising cabin gain below 60 Hz, so in-car response extends well below the anechoic figure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eTwo Chambers, Not One\u003c\/h3\u003e\n\u003cp\u003eThis enclosure follows the Proline X standing design rule for dual sealed builds: \u003cstrong\u003etwo fully separate chambers\u003c\/strong\u003e split by a bonded full-height 3\/4 inch MDF divider, so each driver gets its own dedicated airspace and its own polyfill. Two drivers sharing one sealed volume interact acoustically, with each driver's compression phase becoming the pressure environment the other works against. That smears transient response and blurs the alignment each driver would have on its own. A full divider removes the interaction completely.\u003c\/p\u003e\n\u003cp\u003eBe realistic about the size. At \u003cstrong\u003e10.75 inches tall\u003c\/strong\u003e this is among the tallest cabinets in the Down Fire line, a cargo floor or rear wall build rather than an under-seat one. The 30 by 15 inch footprint is unchanged, so it occupies no more floor area than any other Down Fire cabinet; it simply stands taller because halving the width means each chamber has to gain height to hold its full 0.80 cubic feet. Measure your vertical clearance before ordering. Every external dimension is stated as measured in the down fire position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003ePerimeter cross-bracing carries the panels and polyfill is pre-installed in each chamber. Both drivers land on 8\/32 threaded inserts, and two sets of stainless steel machine screws are included.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e at both driver positions, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so each driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, which matters with two 11.625 inch cutouts in one cabinet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne shared Proline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e to both driver positions in parallel. Side mounted so it stays accessible with the baffles facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA \u003cstrong\u003efull-height bonded 3\/4 inch MDF divider\u003c\/strong\u003e gives each 12TW3-D4 its own 0.80 cubic feet net and its own polyfill, so neither driver is working against the other's compression stroke.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates each 12TW3-D4 at \u003cstrong\u003e400 watts RMS and 800 watts peak\u003c\/strong\u003e, \u003cstrong\u003e800 watts RMS combined\u003c\/strong\u003e across the pair, and recommends 200 to 400 watts of amplifier power per driver. Aim at the top of that range. Sensitivity is 82 dB at 1 watt, which is low, and that is the price of getting 15.2mm of excursion and a 26.46 Hz resonance into a 3.50 inch frame.\u003c\/p\u003e\n\u003cp\u003eOne side-mounted cup feeds both driver positions in parallel. Each driver has dual 4-ohm coils, so final impedance is set at the drivers. Wire both drivers identically, since mismatched wiring between chambers splits power unevenly, and confirm the resulting load against your amplifier's minimum stable impedance before powering the system.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own pair of JL Audio 12TW3-D4 subwoofers; the drivers are purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eTwo cutouts, two chambers, one volume target taken straight from JL Audio's own sealed optimum. Machined on ShopSabre CNC routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540641411161,"sku":"PO 12D-S DF TW3","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12D-SDFTW3Front.png?v=1787246771"},{"product_id":"performance-optimized-down-fire-sealed-10-enclosure-jl-audio-10w3v3-4","title":"Performance Optimized Down Fire Sealed 10\" Enclosure | JL Audio 10W3v3","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%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 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14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 10W3v3-4\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.09 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eMilled Magnet Relief\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.09\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\"\u003e0.693\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e45.9 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e7.5625 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 10W3v3-4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the 10W3v3-4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. The baffle is bored to the 10W3v3-4's \u003cstrong\u003e9.0625 inch cutout\u003c\/strong\u003e, 230mm, and the internal height is set by the driver's \u003cstrong\u003e5.93 inch mounting depth\u003c\/strong\u003e, 151mm, which is deep for this program. The 10W3v3-4 is a conventional deep motor driver rather than a shallow, so the cabinet is built around clearing it rather than around a target volume.\u003c\/p\u003e\n\u003cp\u003eIt is a single 4-ohm voice coil subwoofer rated \u003cstrong\u003e500 watts RMS\u003c\/strong\u003e with a recommended amplifier range of 150 to 500 watts. Mineral-filled polypropylene cone, rubber surround, \u003cstrong\u003e14.0mm of one-way linear excursion\u003c\/strong\u003e, and 53.475 square inches of piston area. JL Audio's Dynamic Motor Analysis handles motor linearity, and Elevated Frame Cooling routes air through slots above the top plate directly onto the voice coil, which is what separates a W3v3 from a generic driver at this power level.\u003c\/p\u003e\n\u003cp\u003ePublished Thiele-Small parameters are \u003cstrong\u003eFs 31.49 Hz, Qts 0.485, and Vas of 1.138 cubic feet\u003c\/strong\u003e, 32.23 liters, with Qes 0.523 and Qms 7.017. Sensitivity is 84.87 dB at 1 watt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e1.14 cubic feet gross\u003c\/strong\u003e and \u003cstrong\u003e1.09 cubic feet net\u003c\/strong\u003e after the driver's published 0.049 cubic feet of displacement, panel thickness and bracing are subtracted. That is larger than the 0.625 cubic feet JL Audio recommends, and the reason is fitment rather than preference.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eHere is the chain. The driver needs 5.93 inches. The outer 3\/4 inch baffle layer is machined as a flush recess and the driver bolts to the inner layer, which recovers 0.75 inch. A 3\/8 inch relief milled into the opposite panel behind the magnet recovers a little more. Add the 0.5 inch minimum clearance required behind the motor and the minimum internal height still lands at 5.3125 inches, which on a 30 by 15 inch footprint works out to 1.09 net. A 0.625 cubic foot cabinet physically cannot contain this driver.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe constraint improves the result.\u003c\/strong\u003e At 1.09 net the system sits at \u003cstrong\u003eQtc 0.693\u003c\/strong\u003e with \u003cstrong\u003eFc 45.0 Hz\u003c\/strong\u003e and a predicted \u003cstrong\u003eF3 of 45.9 Hz\u003c\/strong\u003e. That is within fourteen thousandths of the 0.707 maximally flat reference: flat anechoic response to the corner, clean transient behavior with no overhang, low group delay, and a gentle 12 dB per octave rolloff that integrates naturally with rising cabin gain below 60 Hz. Sealed Qtc always falls as the box grows, and the fitment requirement pushed this one straight onto the textbook alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003ePerimeter cross-bracing carries the panels and polyfill is pre-installed. The driver lands on 8\/32 threaded inserts with stainless steel machine screws included, and every external dimension is stated as measured in the down fire position.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, which is the first half of fitting a 5.93 inch driver into a 7.5625 inch cabinet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eMilled Magnet Relief\u003c\/h4\u003e\n\u003cp\u003eA \u003cstrong\u003e3\/8 inch deep relief\u003c\/strong\u003e is milled into the panel opposite the baffle so the motor clears, with 0.5 inch minimum maintained behind the magnet. That is the second half, and it is why this cabinet holds a deep conventional driver at 7.5625 inches tall.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates the 10W3v3-4 at \u003cstrong\u003e500 watts RMS continuous\u003c\/strong\u003e and recommends 150 to 500 watts of amplifier power. Run the top of that range. Sensitivity is 84.87 dB at 1 watt, and Elevated Frame Cooling is what keeps the coil in shape when you do.\u003c\/p\u003e\n\u003cp\u003eWiring is straightforward: a single voice coil at 4 ohms nominal, so there is no series or parallel decision at the driver and the amplifier simply sees 4 ohms through the cup. Confirm your amplifier is comfortable at that load before setting gain.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own JL Audio 10W3v3-4; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eOne cutout, one mounting depth, one milled relief, all of it set by the JL Audio 10W3v3-4 and nothing else. Machined on ShopSabre CNC routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540823634009,"sku":"PO 10-S DF W3","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SDFW3FaceDown.jpg?v=1787338637"},{"product_id":"performance-optimized-down-fire-sealed-12-enclosure-jl-audio-12w3v3-4","title":"Performance Optimized Down Fire Sealed 12\" Enclosure | JL Audio 12W3v3","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%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 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14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 12\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 12W3v3-4\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.23 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eMilled Magnet Relief\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.23\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\"\u003e0.808\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e43.3 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e8.3125 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 12W3v3-4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the 12W3v3-4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. The baffle is bored to the 12W3v3-4's \u003cstrong\u003e11.0625 inch cutout\u003c\/strong\u003e, 281mm to JL's spec, and the internal height is set by the driver's \u003cstrong\u003e6.65 inch mounting depth\u003c\/strong\u003e. Overall frame diameter is 12.5 inches, which the 30 by 15 inch footprint carries with the terminal cup clear of the driver.\u003c\/p\u003e\n\u003cp\u003eThe W3v3 is JL's medium power 12, a single voice coil driver at 4 ohms nominal rated \u003cstrong\u003e500 watts RMS\u003c\/strong\u003e with a recommended amplifier range of 150 to 500 watts. The cone is mineral filled polypropylene on a rubber surround, 80.6 square inches of piston area, with 13.0mm of one way linear excursion. Sensitivity is \u003cstrong\u003e87.15 dB at 1 watt and 1 meter\u003c\/strong\u003e, genuinely efficient by the standards of this program. Dynamic Motor Analysis handles linearity and Elevated Frame Cooling handles heat.\u003c\/p\u003e\n\u003cp\u003eThe published parameters are what make this driver unusual: \u003cstrong\u003eFs 26.72 Hz, Qts 0.444 and Vas 2.844 cubic feet\u003c\/strong\u003e. That Vas is the largest of any driver in the Proline X Down Fire line. A large Vas means a compliant suspension, so the driver wants real volume before the enclosed air starts dominating the alignment, and the low Qts leaves headroom to reach a well damped result.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e1.23 cubic feet net\u003c\/strong\u003e from 1.30 gross, after panel thickness, perimeter bracing and the driver's published 0.071 cubic feet of displacement are accounted for. That produces \u003cstrong\u003eQtc 0.808, Fc 48.6 Hz and a predicted F3 of 43.3 Hz\u003c\/strong\u003e. JL Audio's recommended sealed volume is 1.125 cubic feet.\u003c\/p\u003e\n\u003cp\u003eThe cabinet runs slightly larger because the driver's depth sets the floor. Take 6.65 inches of mounting depth, subtract the 3\/4 inch recovered by the flush recess in the outer baffle layer, subtract the 3\/8 inch milled relief behind the magnet, then add half an inch of clearance behind the motor. Minimum internal height lands at 6.0625 inches, which on this footprint is 1.23 net. The extra volume works in your favor: at JL's 1.125 the system computes near Qtc 0.834, and at 1.23 it lands at 0.808.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eWorth stating plainly, because of that 2.844 cubic foot Vas this driver would reach the textbook 0.707 alignment at roughly \u003cstrong\u003e1.85 cubic feet net\u003c\/strong\u003e, which on a 30 by 15 footprint is a cabinet near 11 inches tall. That is outside the Down Fire format. In a down fire cabinet 0.808 is the right answer: a mild lift near the corner frequency and a usable, well behaved alignment. If flat response is the priority and you have the vertical space, contact us about a taller custom build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003eA down fire box is a low, wide platform that sits flat against a floor or cargo deck, so square corners maximize usable internal volume for a given footprint and keep the cabinet stable on its mounting surface. Perimeter cross-bracing ties the panels together, polyfill is pre-installed, and the driver lands on 8\/32 threaded inserts with stainless machine screws included. External dimensions are \u003cstrong\u003e30 inches wide by 15 inches deep by 8.3125 inches high\u003c\/strong\u003e, measured in the down fire position, at 34 pounds.\u003c\/p\u003e\n\u003cp\u003eFiring down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, so in-car response extends well below the anechoic figure.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, which matters with an 11.0625 inch cutout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eMilled Magnet Relief\u003c\/h4\u003e\n\u003cp\u003eA \u003cstrong\u003e3\/8 inch deep\u003c\/strong\u003e pocket is machined into the panel opposite the baffle, directly behind the magnet. It buys motor clearance for a 6.65 inch deep driver without adding cabinet height.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates the 12W3v3-4 at \u003cstrong\u003e500 watts RMS continuous\u003c\/strong\u003e and recommends 150 to 500 watts of amplifier power. At 87.15 dB sensitivity this driver produces solid output even in the middle of that range. It is a single voice coil at 4 ohms nominal, so there is no series or parallel decision to make: one side mounted cup, and the amplifier sees 4 ohms.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own JL Audio 12W3v3-4; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eCutout, internal height and magnet relief are machined for this one driver, then built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540827598937,"sku":"PO 12-S DF W3","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SDFW3Front.webp?v=1787334623"},{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-jl-audio-10w3v3-4","title":"Performance Optimized Down Fire Sealed Dual 10\" Enclosure | JL Audio 10W3v3","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 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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:#d99058;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Dual 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of JL Audio 10W3v3-4 subwoofers\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.10 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.10\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net total\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.849\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc per driver\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e47.4 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e8 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 10W3v3-4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the 10W3v3-4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. Both baffle positions are bored to the 10W3v3-4's \u003cstrong\u003e9.0625 inch cutout\u003c\/strong\u003e, 230mm, and the cabinet height is set by the driver's \u003cstrong\u003e5.93 inch mounting depth\u003c\/strong\u003e, 151mm. The W3v3 is a conventional deep motor driver rather than a shallow, so height here is dictated by clearing the motor, not by chasing volume.\u003c\/p\u003e\n\u003cp\u003eEach 10W3v3-4 is a single 4-ohm voice coil subwoofer rated \u003cstrong\u003e500 watts RMS\u003c\/strong\u003e with a recommended amplifier range of 150 to 500 watts. Across the pair that is \u003cstrong\u003e1000 watts RMS combined\u003c\/strong\u003e and 106.95 square inches of piston area, roughly 6 dB more maximum output than one driver in the same alignment. Mineral-filled polypropylene cones, rubber surrounds, and \u003cstrong\u003e14.0mm of one-way linear excursion\u003c\/strong\u003e each. JL Audio's Dynamic Motor Analysis handles motor linearity and Elevated Frame Cooling routes air through slots above the top plate directly onto the voice coils.\u003c\/p\u003e\n\u003cp\u003ePublished Thiele-Small parameters are \u003cstrong\u003eFs 31.49 Hz, Qts 0.485, and Vas of 1.138 cubic feet\u003c\/strong\u003e, 32.23 liters, per driver, with 0.049 cubic feet of displacement each.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e1.20 cubic feet gross\u003c\/strong\u003e and \u003cstrong\u003e1.10 cubic feet net total\u003c\/strong\u003e, which is \u003cstrong\u003e0.55 cubic feet net per driver\u003c\/strong\u003e. Net is what each driver actually sees, after panel thickness, the chamber divider, bracing and the driver's own 0.049 cubic feet of displacement are subtracted.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eAt 0.55 net per chamber each driver lands at \u003cstrong\u003eQtc 0.849\u003c\/strong\u003e with \u003cstrong\u003eFc 55.1 Hz\u003c\/strong\u003e and a predicted \u003cstrong\u003eF3 of 47.4 Hz\u003c\/strong\u003e. Splitting the width in two brings each chamber closer to the 0.625 cubic feet JL Audio recommends than the single driver cabinet can manage, but 0.849 sits above the 0.707 maximally flat reference, so there is more lift near the corner than the single cabinet shows at Qtc 0.693. Be straight about the tradeoff: the single is the better aligned product and this one is the output product. Both are legitimate, they simply answer different questions. Firing down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz either way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eTwo Chambers, Not One\u003c\/h3\u003e\n\u003cp\u003eThis enclosure follows the Proline X standing design rule for dual sealed builds: \u003cstrong\u003etwo fully separate chambers\u003c\/strong\u003e split by a bonded full-height 3\/4 inch MDF divider, so each driver gets its own dedicated airspace and its own polyfill. Two drivers sharing one sealed volume interact acoustically, with each driver's compression phase becoming the pressure environment the other works against, which smears transient response and blurs the alignment each would have on its own. A full divider removes the interaction completely.\u003c\/p\u003e\n\u003cp\u003eThe divider runs vertically, so splitting the cabinet does not change the depth requirement at all. Minimum internal height after the flush recess baffle layer and the milled magnet relief is 5.3125 inches; we build to \u003cstrong\u003e5.75 inches internal\u003c\/strong\u003e, an 8 inch external cabinet, which leaves 0.945 inch of clearance behind each motor instead of the half inch minimum. On a 500 watt driver that breathing room is worth the fraction of an inch. Every external dimension is stated as measured in the down fire position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003ePerimeter cross-bracing carries the panels and polyfill is pre-installed in each chamber. Both drivers land on 8\/32 threaded inserts, and two sets of stainless steel machine screws are included.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e at both driver positions, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so each driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance against a 5.93 inch mounting depth, and a \u003cstrong\u003e3\/8 inch relief\u003c\/strong\u003e is milled behind each motor for the rest.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne shared Proline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e to both driver positions in parallel. Side mounted so it stays accessible with the baffles facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA \u003cstrong\u003efull-height bonded 3\/4 inch MDF divider\u003c\/strong\u003e gives each 10W3v3-4 its own 0.55 cubic feet net and its own polyfill, so neither driver is working against the other's compression stroke.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates each 10W3v3-4 at \u003cstrong\u003e500 watts RMS continuous\u003c\/strong\u003e, \u003cstrong\u003e1000 watts RMS combined\u003c\/strong\u003e across the pair, and recommends 150 to 500 watts of amplifier power per driver. Run the top of that range; Elevated Frame Cooling is what keeps the coils in shape when you do.\u003c\/p\u003e\n\u003cp\u003eWiring is simpler than most duals in this line. Both drivers are single 4-ohm voice coils, so there is no coil configuration decision at the driver, and the two of them in parallel through the one shared cup present a \u003cstrong\u003e2 ohm load\u003c\/strong\u003e. Confirm your amplifier is stable at 2 ohms before powering the system.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own pair of JL Audio 10W3v3-4 subwoofers; the drivers are purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eTwo cutouts, two chambers, two milled magnet reliefs, every dimension set by the JL Audio 10W3v3-4 and nothing else. Machined on ShopSabre CNC routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540832153689,"sku":"PO 10D-S DF W3","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10D-SDFW3FaceDown.jpg?v=1787349531"},{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-jl-audio-10w6v3-d4","title":"Performance Optimized Down Fire Sealed Dual 10\" Enclosure | JL Audio 10W6v3","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%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 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strong{color:#fff}.df-grid{display:flex;flex-wrap:wrap;gap:18px;margin-top:8px}.df-card{flex:1 1 280px;background:#1c1917;border:1px solid #292524;border-top:3px solid #b87333;border-radius:8px;padding:20px 22px}.df-card h4{color:#e8b98d;margin:0 0 8px;font-size:1.04em}.df-card p{margin:0;font-size:.95em;color:#a8a29e}.df-card strong{color:#fff}.df-highlight{background:#3d2412;border-left:4px solid #b87333;border-radius:0 8px 8px 0;padding:18px 22px;margin:18px 0}.df-highlight p{margin:0;color:#d6d3d1}.df-highlight strong{color:#fff}.df-enc{background:#1c1917;color:#d6d3d1;padding:42px 36px;border-bottom:1px solid #292524}.df-enc h3{color:#fff;font-size:1.45em;font-weight:700;margin:0 0 14px;border-left:4px solid #b87333;padding-left:14px}.df-enc p{margin:0 0 14px;color:#d6d3d1}.df-enc-card{background:#292524;border:1px solid #44403c;border-radius:8px;overflow:hidden;margin:18px 0}.df-enc-head{padding:12px 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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:#d99058;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Dual 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of JL Audio 10W6v3-D4\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.16 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.16\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net total\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.797\u003c\/span\u003e\u003cspan class=\"l\"\u003eQtc per chamber\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e42.1 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e8.5625 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 10W6v3-D4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around a Pair of 10W6v3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. Both baffle positions are bored to the 10W6v3-D4's \u003cstrong\u003e9.02 inch cutout\u003c\/strong\u003e, 229mm to JL's spec, and the internal height is set by the driver's \u003cstrong\u003e6.89 inch mounting depth\u003c\/strong\u003e plus the 0.50 inches of pole vent clearance JL explicitly requires behind the motor. The frame measures 10.5 inches overall with a 6.3 inch magnet, so this is a large motor in a low cabinet.\u003c\/p\u003e\n\u003cp\u003eThe W6v3 is JL's top tier automotive subwoofer platform, carrying six US patents covering motor and suspension design. Each driver is a dual 4 ohm voice coil rated \u003cstrong\u003e600 watts RMS continuous\u003c\/strong\u003e with \u003cstrong\u003e19mm of one way linear excursion\u003c\/strong\u003e, the highest Xmax figure of any driver in the Proline X Down Fire line. Across the pair that is 1200 watts RMS combined and 98.6 square inches of piston area. Output at low frequencies is cone area multiplied by excursion, and that travel is where a 10 moves air like something larger.\u003c\/p\u003e\n\u003cp\u003ePublished parameters are Fs 30.12 Hz, Qts 0.513 and Vas 0.821 cubic feet per driver, with sensitivity at 82.7 dB and 6.452 ohms Re in series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.58 cubic feet net per chamber, 1.16 cubic feet net total\u003c\/strong\u003e, from 1.32 gross, after panel thickness, the chamber divider, perimeter bracing and each driver's published 0.078 cubic feet of displacement are accounted for. That produces \u003cstrong\u003eQtc 0.797, Fc 46.8 Hz and a predicted F3 of 42.1 Hz\u003c\/strong\u003e per driver.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eJL Audio recommends 0.55 cubic feet net per 10W6v3-D4 and publishes the resulting alignment as Qtc 0.8099, Fc 47.55 Hz and F3 42.27 Hz. Our figures land \u003cstrong\u003ewithin two tenths of a hertz of theirs\u003c\/strong\u003e, which is the closest agreement this program has produced with any manufacturer, and the marginal extra volume moves the alignment slightly toward the better damped side.\u003c\/p\u003e\n\u003cp\u003eWhat makes that agreement notable is that we did not target it. Cabinet height here is set by driver depth, not by volume. Take 6.89 inches of mounting depth, subtract the 3\/4 inch recovered by the flush recess in each outer baffle layer, subtract the 3\/8 inch milled relief behind each magnet, then honor JL's half inch pole vent clearance. Minimum internal height works out to 6.3125 inches, an 8.5625 inch external cabinet. Split that into two chambers and each driver ends up on JL's own recommended airspace through pure fitment geometry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003ePerimeter cross-bracing ties the panels together, which matters with two 600 watt drivers bolted to the same cabinet. Polyfill is pre-installed in each chamber, and both drivers land on 8\/32 threaded inserts with two sets of stainless machine screws included. External dimensions are \u003cstrong\u003e30 inches wide by 15 inches deep by 8.5625 inches high\u003c\/strong\u003e, measured in the down fire position, at 40 pounds.\u003c\/p\u003e\n\u003cp\u003eBoth drivers fire down into the floor. The sealed rolloff meets rising cabin gain below 60 Hz, so in-car response extends well below the anechoic figure.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eFront baffles are \u003cstrong\u003e1.5 inches\u003c\/strong\u003e at both driver positions, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so each driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, and a 3\/8 inch relief is milled behind each motor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne Proline X ABS and carbon fiber composite cup serves both chambers, with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e to both driver positions in parallel. Side mounted so it stays accessible with the baffles facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA full height bonded \u003cstrong\u003e3\/4 inch MDF divider\u003c\/strong\u003e gives each driver its own 0.58 cubic feet and its own polyfill. Two drivers sharing one volume interact acoustically, each one's compression stroke becoming the pressure environment the other works against, which smears transients and blurs the alignment either would have alone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates each 10W6v3-D4 at \u003cstrong\u003e600 watts RMS continuous\u003c\/strong\u003e, so \u003cstrong\u003e1200 watts RMS combined\u003c\/strong\u003e across the pair. Each driver uses JL's terminal jumper system: both voice coils must be connected for the driver to operate, configured either in parallel for 2 ohms per driver, which is the factory setting, or in series for 8 ohms. Wire both drivers identically, then verify the resulting load through the shared cup against your amplifier's minimum stable impedance.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own pair of JL Audio 10W6v3-D4 subwoofers; the drivers are purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eCutouts, internal height, chamber divider and JL's specified pole vent clearance are machined for this one driver at both positions, then built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540850864217,"sku":"PO 10D-S DF W6","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10D-SDFW6FaceDownII.jpg?v=1787364587"},{"product_id":"jl-audio-10w3v3-dual-subwoofer-box","title":"Performance Optimized Wedge Sealed Dual 10\" Enclosure | JL Audio 10W3v3","description":"\u003cdiv 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!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\u003ch2\u003eTwo 10W3v3s, Each in Its Own 0.625 Cubic Feet.\u003c\/h2\u003e\n\u003cp\u003eA dual chamber sealed wedge cut for the JL Audio 10W3v3 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\"\u003e0.625 CU FT NET PER DRIVER\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eDUAL CHAMBER\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eQTC 0.82 TO 0.84\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eTRUNK MOUNT, REAR FIRING\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003e1000W RMS COMBINED\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eBUILT IN TULLAHOMA, TN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-warn\"\u003e\n\u003cspan class=\"pow-warn-label\"\u003eRead This First\u003c\/span\u003e\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 10W3v3 at a 230mm opening. \u003cstrong\u003eA standard 10 will not fit\u003c\/strong\u003e, and would not see the correct airspace if it did.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eBuilt Backward From One Published Number\u003c\/h3\u003e\n\u003cp\u003eJL publishes 0.625 cubic feet of sealed airspace for the 10W3v3, the volume they list the driver as optimized for. Each chamber here is built at \u003cstrong\u003e0.674 cubic feet gross\u003c\/strong\u003e. Subtract the driver's 0.049 cubic feet of displacement and each 10W3v3 sees \u003cstrong\u003e0.625 cubic feet net\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTotal gross volume across both chambers is 1.348 cubic feet, 1.25 net acoustic.\u003c\/p\u003e\n\u003c\/div\u003e\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 10W3v3 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\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eDual Chamber, Not Common Chamber\u003c\/h3\u003e\n\u003cp\u003eEach 10W3v3 loads into its own sealed 0.674 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 10W3v3 is rated at \u003cstrong\u003e500 watts RMS each\u003c\/strong\u003e, so this cabinet is built around a 1000 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. Both W3v3 coils are single voice coil, so a matched pair gives you series or parallel and nothing in between.\u003c\/p\u003e\n\u003c\/div\u003e\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 230mm cutout and the mounting locations are machined in the same operation from the same origin, so the holes cannot drift relative to each other. \u003cstrong\u003eThreaded inserts go into every one of those mounting locations\u003c\/strong\u003e, with stainless machine screws supplied, so each driver bolts down to metal instead of biting into MDF. That is what lets you pull a driver and put it back as many times as the install takes without chewing out the baffle.\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 0.625 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\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eExternal dimensions are \u003cstrong\u003e27.50 inches wide by 15 inches tall\u003c\/strong\u003e, with depth running \u003cstrong\u003e12.85 inches at the base tapering to 7.39 inches at the top\u003c\/strong\u003e. Maximum driver mounting depth is 5.95 inches against the 10W3v3 requirement of 5.945.\u003c\/p\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eFront clearance.\u003c\/strong\u003e These drivers fire rearward into the trunk, so anything you load behind the box has to stay clear of the cones. At 14mm of one way excursion, allow at least an inch and verify both positions independently.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eEnclosure Performance\u003c\/h3\u003e\n\u003cp\u003eCalculated from the published parameters for both W3v3 coils. The cabinet is one box; the two coils are different motors and land on different alignments in it, so both are given rather than averaged.\u003c\/p\u003e\n\u003ctable class=\"pow-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eCoil\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 style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e10W3v3-4, 4 ohm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e0.823\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e52.9 Hz\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e46.5 Hz\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003ePunchy, slight lift at fc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e10W3v3-2, 2 ohm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.840\u003c\/td\u003e\n\u003ctd\u003e55.4 Hz\u003c\/td\u003e\n\u003ctd\u003e48.0 Hz\u003c\/td\u003e\n\u003ctd\u003ePunchy, slight lift at fc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"pow-chartbox\"\u003e\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\u003crect x=\"0\" y=\"0\" width=\"1260\" height=\"420\" fill=\"#0b1424\"\u003e\u003c\/rect\u003e\u003crect x=\"90\" y=\"50\" width=\"1080\" height=\"300\" fill=\"#111c30\" stroke=\"#4a3520\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\u003cline x1=\"210\" y1=\"50\" x2=\"210\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"210\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e20\u003c\/text\u003e\u003cline x1=\"379\" y1=\"50\" x2=\"379\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"379\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e30\u003c\/text\u003e\u003cline x1=\"592\" y1=\"50\" x2=\"592\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"592\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e50\u003c\/text\u003e\u003cline x1=\"881\" y1=\"50\" x2=\"881\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"881\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e100\u003c\/text\u003e\u003cline x1=\"1170\" y1=\"50\" x2=\"1170\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"1170\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e200\u003c\/text\u003e\u003cline x1=\"90\" y1=\"115\" x2=\"1170\" y2=\"115\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"1178\" y=\"120\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0 dB\u003c\/text\u003e\u003cline x1=\"90\" y1=\"154\" x2=\"1170\" y2=\"154\" stroke=\"#64748b\" stroke-width=\"1\" stroke-dasharray=\"6,5\"\u003e\u003c\/line\u003e\u003ctext x=\"1178\" y=\"159\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-3 dB\u003c\/text\u003e\u003ctext x=\"48\" y=\"185\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-5\u003c\/text\u003e\u003ctext x=\"48\" y=\"251\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-10\u003c\/text\u003e\u003ctext x=\"48\" y=\"316\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-15\u003c\/text\u003e\u003cpolyline points=\"90,350 101,350 112,350 124,350 135,350 146,350 157,350 169,350 180,349 191,343 202,337 214,330 225,324 236,318 247,312 259,305 270,299 281,293 292,287 304,281 315,275 326,268 337,262 349,256 360,250 371,244 382,238 394,232 405,226 416,220 428,215 439,209 450,203 461,198 472,192 484,187 495,182 506,177 518,172 529,167 540,163 551,158 562,154 574,150 585,146 596,143 607,140 619,136 630,134 641,131 652,128 664,126 675,124 686,122 698,121 709,119 720,118 731,117 742,116 754,115 765,114 776,114 787,113 799,113 810,112 821,112 832,112 844,112 855,111 866,111 877,111 889,111 900,111 911,111 923,111 934,111 945,111 956,111 968,112 979,112 990,112 1001,112 1012,112 1024,112 1035,112 1046,112 1058,112 1069,113 1080,113 1091,113 1102,113 1114,113 1125,113 1136,113 1147,113 1159,113 1170,113\" fill=\"none\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/polyline\u003e\u003cline x1=\"800\" y1=\"255\" x2=\"850\" y2=\"255\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/line\u003e\u003ctext x=\"862\" y=\"261\" font-size=\"16\" fill=\"#e2e8f0\" font-family=\"sans-serif\" font-weight=\"700\"\u003e10W3v3-4\u003c\/text\u003e\u003cpolyline points=\"90,350 101,350 112,350 124,350 135,350 146,350 157,350 169,350 180,350 191,350 202,347 214,341 225,334 236,328 247,322 259,316 270,309 281,303 292,297 304,291 315,284 326,278 337,272 349,266 360,260 371,253 382,247 394,241 405,235 416,229 428,223 439,217 450,212 461,206 472,200 484,195 495,189 506,184 518,179 529,174 540,169 551,164 562,159 574,155 585,151 596,147 607,143 619,140 630,136 641,133 652,131 664,128 675,126 686,123 698,122 709,120 720,118 731,117 742,116 754,115 765,114 776,113 787,112 799,112 810,111 821,111 832,111 844,111 855,110 866,110 877,110 889,110 900,110 911,110 923,110 934,110 945,110 956,111 968,111 979,111 990,111 1001,111 1012,111 1024,111 1035,111 1046,112 1058,112 1069,112 1080,112 1091,112 1102,112 1114,112 1125,113 1136,113 1147,113 1159,113 1170,113\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\u003cline x1=\"800\" y1=\"287\" x2=\"850\" y2=\"287\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/line\u003e\u003ctext x=\"862\" y=\"293\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e10W3v3-2\u003c\/text\u003e\u003ctext x=\"560\" y=\"404\" font-size=\"17\" fill=\"#c68a4a\" font-family=\"sans-serif\" font-weight=\"700\" text-anchor=\"middle\"\u003eFrequency (Hz)\u003c\/text\u003e\u003ctext x=\"102\" y=\"36\" font-size=\"16\" fill=\"#d99058\" font-family=\"sans-serif\" font-weight=\"700\"\u003eJL Audio 10W3v3, per driver in this enclosure. Anechoic half-space, no cabin gain.\u003c\/text\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eBoth coils, one cabinet.\u003c\/strong\u003e Qtc runs 0.823 to 0.840 depending on which W3v3 you fit. That whole span sits in the range JL voices this series for, a little lift at resonance rather than a maximally flat alignment. It is a deliberate choice on their part and this box respects it instead of fighting it.\u003c\/p\u003e\u003c\/div\u003e\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\u003cdiv class=\"pow-section\"\u003e\u003cp\u003eFull dimensions, cutout, mounting depth, and hardware details are listed under the \u003cstrong\u003eEnclosures\u003c\/strong\u003e tab.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"pow-cta\"\u003e\n\u003ch3\u003eCut for the 10W3v3. Built in Tennessee.\u003c\/h3\u003e\n\u003cp\u003eEnclosure only. The JL Audio 10W3v3 drivers are purchased separately. 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\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44589662961753,"sku":"PO 10D-S W JL W3V3 BB","price":359.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44603385315417,"sku":"PO 10D-S W JL W3V3 B","price":339.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_125d9dc2-e720-4d8e-b35e-c6afa0b55a6c.jpg?v=1787957077"},{"product_id":"jl-audio-12w3v3-dual-subwoofer-box","title":"Performance Optimized Wedge Sealed Dual 12\" Enclosure | JL Audio 12W3v3","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\u003ch2\u003eTwo 12W3v3s, Each in Its Own 1.250 Cubic Feet.\u003c\/h2\u003e\n\u003cp\u003eA dual chamber sealed wedge cut for the JL Audio 12W3v3 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\"\u003e1.250 CU FT NET PER DRIVER\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eDUAL CHAMBER\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eQTC 0.80 TO 0.90\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eTRUNK MOUNT, REAR FIRING\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003e1000W RMS COMBINED\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eBUILT IN TULLAHOMA, TN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-warn\"\u003e\n\u003cspan class=\"pow-warn-label\"\u003eRead This First\u003c\/span\u003e\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 12W3v3 at a 281mm 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\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eBuilt Backward From One Published Number\u003c\/h3\u003e\n\u003cp\u003eJL publishes 1.25 cubic feet of sealed airspace for the 12W3v3-2 and 1.125 for the -4. This cabinet is built at 1.25, so the 2 ohm coil sits on its published number and the 4 ohm coil lands slightly better damped than its own. Each chamber here is built at \u003cstrong\u003e1.321 cubic feet gross\u003c\/strong\u003e. Subtract the driver's 0.071 cubic feet of displacement and each 12W3v3 sees \u003cstrong\u003e1.250 cubic feet net\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTotal gross volume across both chambers is 2.642 cubic feet, 2.50 net acoustic.\u003c\/p\u003e\n\u003c\/div\u003e\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 12W3v3 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\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eDual Chamber, Not Common Chamber\u003c\/h3\u003e\n\u003cp\u003eEach 12W3v3 loads into its own sealed 1.321 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 12W3v3 is rated at \u003cstrong\u003e500 watts RMS each\u003c\/strong\u003e, so this cabinet is built around a 1000 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. Both W3v3 coils are single voice coil, so a matched pair gives you series or parallel and nothing in between.\u003c\/p\u003e\n\u003c\/div\u003e\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 281mm cutout and the mounting locations are machined in the same operation from the same origin, so the holes cannot drift relative to each other. \u003cstrong\u003eThreaded inserts go into every one of those mounting locations\u003c\/strong\u003e, with stainless machine screws supplied, so each driver bolts down to metal instead of biting into MDF. That is what lets you pull a driver and put it back as many times as the install takes without chewing out the baffle.\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 1.250 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\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eExternal dimensions are \u003cstrong\u003e32.00 inches wide by 16 inches tall\u003c\/strong\u003e, with depth running \u003cstrong\u003e16.86 inches at the base tapering to 11.04 inches at the top\u003c\/strong\u003e. Maximum driver mounting depth is 9.79 inches against the 12W3v3 requirement of 6.654.\u003c\/p\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eFront clearance.\u003c\/strong\u003e These drivers fire rearward into the trunk, so anything you load behind the box has to stay clear of the cones. At 13mm of one way excursion, allow at least an inch and verify both positions independently.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eEnclosure Performance\u003c\/h3\u003e\n\u003cp\u003eCalculated from the published parameters for both W3v3 coils. The cabinet is one box; the two coils are different motors and land on different alignments in it, so both are given rather than averaged.\u003c\/p\u003e\n\u003ctable class=\"pow-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eCoil\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 style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e12W3v3-4, 4 ohm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e0.796\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e48.3 Hz\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e43.5 Hz\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003ePunchy, slight lift at fc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e12W3v3-2, 2 ohm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.901\u003c\/td\u003e\n\u003ctd\u003e50.4 Hz\u003c\/td\u003e\n\u003ctd\u003e41.8 Hz\u003c\/td\u003e\n\u003ctd\u003eWarmer, more lift at fc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"pow-chartbox\"\u003e\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\u003crect x=\"0\" y=\"0\" width=\"1260\" height=\"420\" fill=\"#0b1424\"\u003e\u003c\/rect\u003e\u003crect x=\"90\" y=\"50\" width=\"1080\" height=\"300\" fill=\"#111c30\" stroke=\"#4a3520\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\u003cline x1=\"210\" y1=\"50\" x2=\"210\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"210\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e20\u003c\/text\u003e\u003cline x1=\"379\" y1=\"50\" x2=\"379\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"379\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e30\u003c\/text\u003e\u003cline x1=\"592\" y1=\"50\" x2=\"592\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"592\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e50\u003c\/text\u003e\u003cline x1=\"881\" y1=\"50\" x2=\"881\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"881\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e100\u003c\/text\u003e\u003cline x1=\"1170\" y1=\"50\" x2=\"1170\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"1170\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e200\u003c\/text\u003e\u003cline x1=\"90\" y1=\"115\" x2=\"1170\" y2=\"115\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"1178\" y=\"120\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0 dB\u003c\/text\u003e\u003cline x1=\"90\" y1=\"154\" x2=\"1170\" y2=\"154\" stroke=\"#64748b\" stroke-width=\"1\" stroke-dasharray=\"6,5\"\u003e\u003c\/line\u003e\u003ctext x=\"1178\" y=\"159\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-3 dB\u003c\/text\u003e\u003ctext x=\"48\" y=\"185\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-5\u003c\/text\u003e\u003ctext x=\"48\" y=\"251\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-10\u003c\/text\u003e\u003ctext x=\"48\" y=\"316\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-15\u003c\/text\u003e\u003cpolyline points=\"90,350 101,350 112,350 124,350 135,350 146,348 157,341 169,335 180,329 191,323 202,317 214,310 225,304 236,298 247,292 259,286 270,280 281,274 292,268 304,262 315,256 326,250 337,244 349,238 360,232 371,226 382,221 394,215 405,209 416,204 428,199 439,193 450,188 461,183 472,178 484,174 495,169 506,165 518,160 529,156 540,152 551,149 562,145 574,142 585,139 596,136 607,134 619,131 630,129 641,127 652,125 664,124 675,122 686,121 698,120 709,118 720,118 731,117 742,116 754,115 765,115 776,114 787,114 799,114 810,113 821,113 832,113 844,113 855,113 866,113 877,113 889,113 900,113 911,113 923,113 934,113 945,113 956,113 968,113 979,113 990,113 1001,113 1012,113 1024,113 1035,113 1046,113 1058,113 1069,113 1080,113 1091,114 1102,114 1114,114 1125,114 1136,114 1147,114 1159,114 1170,114\" fill=\"none\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/polyline\u003e\u003cline x1=\"800\" y1=\"255\" x2=\"850\" y2=\"255\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/line\u003e\u003ctext x=\"862\" y=\"261\" font-size=\"16\" fill=\"#e2e8f0\" font-family=\"sans-serif\" font-weight=\"700\"\u003e12W3v3-4\u003c\/text\u003e\u003cpolyline points=\"90,350 101,350 112,350 124,350 135,350 146,350 157,349 169,342 180,336 191,330 202,323 214,317 225,311 236,304 247,298 259,292 270,285 281,279 292,272 304,266 315,260 326,253 337,247 349,241 360,235 371,228 382,222 394,216 405,210 416,204 428,198 439,192 450,186 461,181 472,175 484,170 495,164 506,159 518,154 529,150 540,145 551,141 562,137 574,134 585,130 596,127 607,124 619,121 630,119 641,117 652,115 664,113 675,112 686,111 698,110 709,109 720,108 731,107 742,107 754,107 765,106 776,106 787,106 799,106 810,106 821,106 832,106 844,107 855,107 866,107 877,107 889,107 900,108 911,108 923,108 934,108 945,109 956,109 968,109 979,109 990,110 1001,110 1012,110 1024,110 1035,111 1046,111 1058,111 1069,111 1080,111 1091,112 1102,112 1114,112 1125,112 1136,112 1147,112 1159,112 1170,113\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\u003cline x1=\"800\" y1=\"287\" x2=\"850\" y2=\"287\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/line\u003e\u003ctext x=\"862\" y=\"293\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e12W3v3-2\u003c\/text\u003e\u003ctext x=\"560\" y=\"404\" font-size=\"17\" fill=\"#c68a4a\" font-family=\"sans-serif\" font-weight=\"700\" text-anchor=\"middle\"\u003eFrequency (Hz)\u003c\/text\u003e\u003ctext x=\"102\" y=\"36\" font-size=\"16\" fill=\"#d99058\" font-family=\"sans-serif\" font-weight=\"700\"\u003eJL Audio 12W3v3, per driver in this enclosure. Anechoic half-space, no cabin gain.\u003c\/text\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eBoth coils, one cabinet.\u003c\/strong\u003e Qtc runs 0.796 to 0.901 depending on which W3v3 you fit. That whole span sits in the range JL voices this series for, a little lift at resonance rather than a maximally flat alignment. It is a deliberate choice on their part and this box respects it instead of fighting it.\u003c\/p\u003e\u003c\/div\u003e\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\u003cdiv class=\"pow-section\"\u003e\u003cp\u003eFull dimensions, cutout, mounting depth, and hardware details are listed under the \u003cstrong\u003eEnclosures\u003c\/strong\u003e tab.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"pow-cta\"\u003e\n\u003ch3\u003eCut for the 12W3v3. Built in Tennessee.\u003c\/h3\u003e\n\u003cp\u003eEnclosure only. The JL Audio 12W3v3 drivers are purchased separately. 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\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44589663518809,"sku":"PO 12D-S W JL W3V3 BB","price":389.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44603385544793,"sku":"PO 12D-S W JL W3V3 B","price":369.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_0a668744-aa22-440b-a9b4-04a9eb3a8da8.jpg?v=1787957078"},{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-jl-audio-10tw3-d4-44-5-wide-shallow","title":"Performance Optimized Down Fire Wide Sealed Dual 10\" Enclosure | JL Audio 10TW3-D4","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 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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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Wide Dual 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eUnder rear seat fitment for trucks and SUVs. Cut for a pair of JL Audio 10TW3-D4\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eDown Fire Wide\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e12.25\" Shallow Depth\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.507\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net each\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.956\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, per chamber\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e40.0 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e6.5 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eThe Down Fire Wide Format\u003c\/h3\u003e\n\u003cp\u003eDown Fire Wide is the Performance Optimized answer to a specific problem: the space under the rear seat of a truck or SUV is \u003cstrong\u003elong and shallow\u003c\/strong\u003e, and a standard 30 by 15 inch enclosure will not go in it.\u003c\/p\u003e\n\u003cp\u003eSo the cabinet is turned sideways. This one runs \u003cstrong\u003e44.5 inches wide by 12.25 inches deep by 6.5 inches tall\u003c\/strong\u003e, which spans most of the width of a rear bench while sitting well within the depth those spaces allow. The airspace lost from the depth is recovered along the length, so each driver still gets a properly sized chamber rather than a compromised one.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eMeasure the depth before anything else.\u003c\/strong\u003e Under seat spaces vary widely between cab configurations, and depth is almost always the limiting dimension rather than width or height. If your available depth is 12.25 inches or more and you have 44.5 inches of run, this cabinet fits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds. Down Fire Wide variants like this one run long and shallow for under seat fitment.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble layer, outer layer machined as a flush recess. 1.5 inch standard, 1.25 inch on shallow builds like this one.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The cutouts, the driver orientation and the chamber volumes all come from the JL Audio 10TW3-D4's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the JL Audio 10TW3-D4\u003c\/h3\u003e\n\u003cp\u003eBoth baffle positions are bored to the TW3's \u003cstrong\u003e9.625 inch cutout\u003c\/strong\u003e, and the cabinet height is set by its \u003cstrong\u003e3.25 inch mounting depth\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe 10TW3-D4 is a dual 4-ohm subwoofer rated \u003cstrong\u003e400 watts RMS and 800 watts peak\u003c\/strong\u003e, with \u003cstrong\u003e15.2mm of one-way linear excursion\u003c\/strong\u003e. Across the pair that is 800 watts RMS combined and 730 cm² of cone area. Polymer and mica composite cone, synthetic rubber surround, cast alloy frame, 2 inch aluminum voice coil. JL's patented Thin-Line architecture is what puts that much travel into a 3.25 inch frame, and it is the reason a driver like this can live under a seat at all.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe drivers are rotated.\u003c\/strong\u003e The 10TW3-D4 flange measures 11.2 inches across the tab ears and 10.5 inches on the minor axis. In a 12.25 inch deep cabinet the ears have to run along the length of the box, not across it. Both baffle positions are laid out that way, which is the kind of detail that decides whether a driver physically bolts down or not.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eShallow Without the Usual Penalty\u003c\/h3\u003e\n\u003cp\u003eEach chamber holds \u003cstrong\u003e0.507 cubic feet net\u003c\/strong\u003e, from 0.577 gross, after the driver's 0.07 cubic feet of displacement. JL Audio's stated sealed optimum for the 10TW3-D4 is 0.50 net, so this lands within seven thousandths of their own figure.\u003c\/p\u003e\n\u003cp\u003eThat produces \u003cstrong\u003eQtc 0.956 with Fc at 49.8 Hz and a predicted F3 of 40.0 Hz\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe shallow format costs nothing acoustically.\u003c\/strong\u003e Our standard 30 by 15 inch dual TW3 cabinet gives each driver 0.50 net and lands at Qtc 0.960 with F3 at 40.1 Hz. This cabinet is at 0.956 and 40.0 Hz. The two are the same alignment to within four thousandths of Qtc and a tenth of a hertz. You are choosing a shape, not accepting a compromise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eGetting there took a change to the baffle. The second layer is \u003cstrong\u003e1\/2 inch rather than the usual 3\/4\u003c\/strong\u003e, making the front baffle 1.25 inches total instead of 1.5. That recovers a quarter inch of internal height without adding anything to the outside of the cabinet, and a quarter inch across a 44.5 by 12.25 inch footprint is worth about 0.06 cubic feet of net volume across the two chambers. It is the difference between sitting under JL's target and sitting on it.\u003c\/p\u003e\n\u003cp\u003eFor the record, Qtc 0.956 is above the textbook maximally flat reference of 0.707. That is not a consequence of the shallow footprint; it is simply what this driver does in the volume JL recommends. The TW3 is voiced for output and impact in small sealed enclosures rather than for a flat anechoic curve.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eTwo Chambers, Not One\u003c\/h3\u003e\n\u003cp\u003eThis enclosure follows the Proline X standing design rule for dual sealed builds: \u003cstrong\u003etwo fully separate chambers\u003c\/strong\u003e divided by a bonded full-height 3\/4 inch MDF panel.\u003c\/p\u003e\n\u003cp\u003eTwo drivers sharing one sealed volume interact acoustically. Each driver's compression phase becomes the pressure environment the other is working against, which smears transient response and blurs the alignment each would have on its own. A full divider eliminates that entirely. Each TW3 gets its own 0.507 cubic feet and its own polyfill.\u003c\/p\u003e\n\u003cp\u003eOn a long cabinet the divider does structural work as well, tying the front and rear walls together at the centre of a 44.5 inch span.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Wide Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e44.5 inches wide by 12.25 inches deep by 6.5 inches tall, measured in the down fire position\u003c\/strong\u003e. Feet ship with the enclosure but are not installed, so plan the space around where you intend to mount them.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003e1.25 Inch Double Baffle\u003c\/h4\u003e\n\u003cp\u003eA 3\/4 inch inner layer with a \u003cstrong\u003e1\/2 inch outer layer machined as a flush recess\u003c\/strong\u003e. The driver bolts to the inner layer. The thinner outer layer buys a quarter inch of internal height without growing the cabinet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eRotated Driver Layout\u003c\/h4\u003e\n\u003cp\u003eBoth cutouts are laid out with the \u003cstrong\u003eflange tab ears running along the 44.5 inch length\u003c\/strong\u003e, so the 10.5 inch minor axis crosses the shallow depth with 9\/16 inch of baffle land fore and aft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA bonded \u003cstrong\u003efull-height 3\/4 inch divider\u003c\/strong\u003e gives each driver its own 0.507 cubic feet and its own polyfill, and ties the walls together mid span.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eOne Shared Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, \u003cstrong\u003eside mounted\u003c\/strong\u003e and pre-wired in 12 gauge OFC to both driver positions in parallel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Wiring\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates the 10TW3-D4 at \u003cstrong\u003e400 watts RMS\u003c\/strong\u003e each, 800 watts RMS combined across the pair, and recommends 200 to 400 watts of amplifier power per driver. Aim for the upper end of that range: sensitivity is 82.10 dB, which is low, and that is the tradeoff for 15.2mm of excursion in a 3.25 inch frame.\u003c\/p\u003e\n\u003cp\u003eOne side mounted terminal cup serves both chambers, pre-wired in 12 gauge OFC to both driver positions in parallel, so you do not run the chambers separately to the amplifier. Each driver is dual 4-ohm, so final impedance is set at the drivers. Wire both identically, since mismatched wiring between chambers will split power unevenly, and confirm the resulting load against your amplifier's minimum stable impedance before powering the system.\u003c\/p\u003e\n\u003cp\u003eBring your own pair of JL Audio 10TW3-D4 subwoofers. The enclosure carries a 1 year limited warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eDown Fire Wide, built for the space under a rear bench, one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44589772832857,"sku":"PO 10D-S DFW TW3","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10D-SDFTW3_II.jpg?v=1787968800"},{"product_id":"performance-optimized-down-fire-sealed-13-enclosure-jl-audio-13tw5v2","title":"Performance Optimized Down Fire Sealed 13\" Enclosure | JL Audio 13TW5v2","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:#d99058;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 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:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 13\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 13TW5v2\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e0.80 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eStandoffs Included\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eWood Screw Mount\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-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=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.94 to 1.01\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, both coils\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e41.2 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e6.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height, excludes standoffs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA shared 30 by 15 inch platform, with cabinet height as the variable. This build uses it at 6.25 inches tall.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eNormally threaded inserts with machine screws. \u003cstrong\u003eNot on this build.\u003c\/strong\u003e The TW5v2's flange is too narrow for inserts, so it mounts with wood screws direct into the 1.5 inch baffle.\u003c\/td\u003e\n\u003ctd\u003eThreaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the JL Audio 13TW5v2\u003c\/h3\u003e\n\u003cp\u003eThe baffle is bored to the TW5v2's \u003cstrong\u003e318 mm cutout\u003c\/strong\u003e and the airspace is built to \u003cstrong\u003e0.80 cubic feet net\u003c\/strong\u003e, which is the figure JL publishes for this driver. Not a range. JL lists 0.80 as both the minimum and the maximum sealed volume, and does not recommend a ported enclosure for it at all, so there is no larger box on offer and no alternative alignment to choose between.\u003c\/p\u003e\n\u003cp\u003eThe TW5v2 is a thin-line 13 inch built for shallow installs. Its \u003cstrong\u003e2.638 inch mounting depth\u003c\/strong\u003e is the shallowest of any driver in this program, which is why the cabinet is sized by airspace rather than by motor clearance: the driver needs 4.14 inches of internal height and the volume needs 6.25.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eMounting: Wood Screws, Not Inserts\u003c\/h3\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis build does not use threaded inserts, and that is a deliberate departure from the rest of the Performance Optimized range.\u003c\/strong\u003e The TW5v2 measures 12.992 inches across the frame against a 12.52 inch cutout, which leaves \u003cstrong\u003e0.236 inches of flange per side\u003c\/strong\u003e. There is not enough material there to land an insert. The driver mounts with \u003cstrong\u003ewood screws direct into the 1.5 inch baffle\u003c\/strong\u003e instead.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eThe double baffle is what makes that work. A wood screw into a single 3\/4 inch panel is a weak joint on a subwoofer; into 1.5 inches of bonded MDF it has real thread engagement. Pilot the holes and do not overdrive them, and treat repeated removal with more care than you would an insert, because wood screws do not tolerate being cycled the way machine screws into metal do.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-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. The volume quoted is true net internal airspace after panel thickness, bracing and the driver's own 0.052 cubic feet of displacement are accounted for. Gross is 0.8603.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eWhat the Alignment Actually Is\u003c\/h3\u003e\n\u003cp\u003eBoth coil versions are covered by this cabinet and they land close together in it. These are high Q results, and that follows directly from JL fixing the volume at 0.80 rather than from anything about the enclosure.\u003c\/p\u003e\n\u003ctable class=\"df-tier\"\u003e\n\u003ctr\u003e\n\u003cth\u003eCoil\u003c\/th\u003e\n\u003cth\u003eSystem Qtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13TW5v2-4, 4 ohm\u003c\/td\u003e\n\u003ctd\u003eQtc 1.014\u003c\/td\u003e\n\u003ctd\u003e52.8 Hz\u003c\/td\u003e\n\u003ctd\u003e41.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13TW5v2-2, 2 ohm\u003c\/td\u003e\n\u003ctd\u003eQtc 0.939\u003c\/td\u003e\n\u003ctd\u003e50.9 Hz\u003c\/td\u003e\n\u003ctd\u003e41.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThere is no larger box to move to.\u003c\/strong\u003e JL publishes 0.80 as both the minimum and the maximum sealed volume for the TW5v2 and does not recommend ported. A bigger sealed cabinet would lower Qtc but would be outside what the driver is specified for. This is the alignment the driver is sold with.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e30.00 inches wide by 15.00 inches deep by 6.25 inches tall, measured in the down fire position and excluding standoffs\u003c\/strong\u003e. Plan around the installed height: the standoffs hold 1.75 inches under the baffle, so the finished stack sits near \u003cstrong\u003e8.00 inches\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets. On this build it is also what the mounting screws bite into, so the second layer is structural rather than just stiffening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eStandoffs Included\u003c\/h4\u003e\n\u003cp\u003eJL publishes no front clearance figure for the TW5v2, so this cabinet uses the Proline X standard \u003cstrong\u003e1.75 inch\u003c\/strong\u003e standoff, shipped uninstalled so you can place them to suit your floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eMotor Clearance and Orientation\u003c\/h3\u003e\n\u003cp\u003eThe motor rises off the baffle into the cavity, so on a down fire cabinet the clearance that matters runs to the top panel. At 4.00 inches of internal height against a 2.638 inch mounting depth there is well over the 0.75 inch minimum, because this cabinet is sized by airspace and the TW5v2 is unusually shallow.\u003c\/p\u003e\n\u003cp\u003eJL does not publish a position on down firing this driver, and this cabinet makes no claim on their behalf. The feet ship uninstalled, so front firing or up firing remains available to you at install time without changing anything about the enclosure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL rates the TW5v2 at \u003cstrong\u003e600 watts RMS\u003c\/strong\u003e. The 13TW5v2-4 is a single 4 ohm coil and the 13TW5v2-2 a single 2 ohm, so a single driver presents whichever impedance you bought.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own TW5v2; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eBuilt one at a time in Tullahoma, Tennessee, with standoffs and a 1 year limited warranty. Questions on fitment or amplifier matching, call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44589858422873,"sku":"PO 13-S DF TW5","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_1d141cd5-1137-4002-bb2a-f94b6e4e1ee3.jpg?v=1787974997"},{"product_id":"performance-optimized-down-fire-sealed-dual-13-enclosure-jl-audio-13tw5v2","title":"Performance Optimized Down Fire Sealed Dual 13\" Enclosure | JL Audio 13TW5v2","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%,#5c3317 100%);padding:54px 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14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#3d2412;color:#e8b98d}.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(184,115,51,.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\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Dual 13\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 13TW5v2\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e0.80 cu ft Net Per Driver\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eStandoffs Included\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eWood Screw Mount\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.80\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net per driver\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.94 to 1.01\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, both coils\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e41.2 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e10.40 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height, excludes standoffs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA shared 30 by 15 inch platform, with cabinet height as the variable. This build uses it at 10.40 inches tall.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eNormally threaded inserts with machine screws. \u003cstrong\u003eNot on this build.\u003c\/strong\u003e The TW5v2's flange is too narrow for inserts, so it mounts with wood screws direct into the 1.5 inch baffle.\u003c\/td\u003e\n\u003ctd\u003eThreaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the JL Audio 13TW5v2\u003c\/h3\u003e\n\u003cp\u003eThe baffle is bored to the TW5v2's \u003cstrong\u003e318 mm cutout\u003c\/strong\u003e and the airspace is built to \u003cstrong\u003e0.80 cubic feet net\u003c\/strong\u003e, which is the figure JL publishes for this driver. Not a range. JL lists 0.80 as both the minimum and the maximum sealed volume, and does not recommend a ported enclosure for it at all, so there is no larger box on offer and no alternative alignment to choose between.\u003c\/p\u003e\n\u003cp\u003eThe TW5v2 is a thin-line 13 inch built for shallow installs. Its \u003cstrong\u003e2.638 inch mounting depth\u003c\/strong\u003e is the shallowest of any driver in this program, which is why the cabinet is sized by airspace rather than by motor clearance: the driver needs 4.14 inches of internal height and the volume needs 10.40.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eTwo Fully Separate Chambers\u003c\/h3\u003e\n\u003cp\u003eA full divider gives each TW5v2 its own sealed chamber at the same 0.80 cubic feet the single driver version delivers, so the alignment is identical whichever you buy. Neither cone loads against the other, which keeps the pair predictable under hard excursion instead of modulating each other's air load.\u003c\/p\u003e\n\u003cp\u003eThe two cutouts sit 15 inches apart on centre, leaving \u003cstrong\u003e2.01 inches between the driver frames\u003c\/strong\u003e and an inch to the cabinet edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eMounting: Wood Screws, Not Inserts\u003c\/h3\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis build does not use threaded inserts, and that is a deliberate departure from the rest of the Performance Optimized range.\u003c\/strong\u003e The TW5v2 measures 12.992 inches across the frame against a 12.52 inch cutout, which leaves \u003cstrong\u003e0.236 inches of flange per side\u003c\/strong\u003e. There is not enough material there to land an insert. The driver mounts with \u003cstrong\u003ewood screws direct into the 1.5 inch baffle\u003c\/strong\u003e instead.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eThe double baffle is what makes that work. A wood screw into a single 3\/4 inch panel is a weak joint on a subwoofer; into 1.5 inches of bonded MDF it has real thread engagement. Pilot the holes and do not overdrive them, and treat repeated removal with more care than you would an insert, because wood screws do not tolerate being cycled the way machine screws into metal do.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.80 cubic feet net per driver\u003c\/strong\u003e. The volume quoted is true net internal airspace after panel thickness, bracing and the driver's own 0.052 cubic feet of displacement are accounted for. Gross is 1.7518 across both chambers.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eWhat the Alignment Actually Is\u003c\/h3\u003e\n\u003cp\u003eBoth coil versions are covered by this cabinet and they land close together in it. These are high Q results, and that follows directly from JL fixing the volume at 0.80 rather than from anything about the enclosure.\u003c\/p\u003e\n\u003ctable class=\"df-tier\"\u003e\n\u003ctr\u003e\n\u003cth\u003eCoil\u003c\/th\u003e\n\u003cth\u003eSystem Qtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13TW5v2-4, 4 ohm\u003c\/td\u003e\n\u003ctd\u003eQtc 1.014\u003c\/td\u003e\n\u003ctd\u003e52.8 Hz\u003c\/td\u003e\n\u003ctd\u003e41.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13TW5v2-2, 2 ohm\u003c\/td\u003e\n\u003ctd\u003eQtc 0.939\u003c\/td\u003e\n\u003ctd\u003e50.9 Hz\u003c\/td\u003e\n\u003ctd\u003e41.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThere is no larger box to move to.\u003c\/strong\u003e JL publishes 0.80 as both the minimum and the maximum sealed volume for the TW5v2 and does not recommend ported. A bigger sealed cabinet would lower Qtc but would be outside what the driver is specified for. This is the alignment the driver is sold with.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e30.00 inches wide by 15.00 inches deep by 10.40 inches tall, measured in the down fire position and excluding standoffs\u003c\/strong\u003e. Plan around the installed height: the standoffs hold 1.75 inches under the baffle, so the finished stack sits near \u003cstrong\u003e12.15 inches\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets. On this build it is also what the mounting screws bite into, so the second layer is structural rather than just stiffening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e to both driver positions. Side mounted so it stays accessible with the baffle facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eStandoffs Included\u003c\/h4\u003e\n\u003cp\u003eJL publishes no front clearance figure for the TW5v2, so this cabinet uses the Proline X standard \u003cstrong\u003e1.75 inch\u003c\/strong\u003e standoff, shipped uninstalled so you can place them to suit your floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eMotor Clearance and Orientation\u003c\/h3\u003e\n\u003cp\u003eThe motor rises off the baffle into the cavity, so on a down fire cabinet the clearance that matters runs to the top panel. At 8.15 inches of internal height against a 2.638 inch mounting depth there is well over the 0.75 inch minimum, because this cabinet is sized by airspace and the TW5v2 is unusually shallow.\u003c\/p\u003e\n\u003cp\u003eJL does not publish a position on down firing this driver, and this cabinet makes no claim on their behalf. The feet ship uninstalled, so front firing or up firing remains available to you at install time without changing anything about the enclosure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL rates the TW5v2 at \u003cstrong\u003e600 watts RMS\u003c\/strong\u003e each, 1200 watts combined. The 13TW5v2-4 is a single 4 ohm coil and the 13TW5v2-2 a single 2 ohm, so a matched pair gives 2 ohms parallel or 8 ohms series on the 4 ohm version, and 1 ohm parallel or 4 ohms series on the 2 ohm version. The 1 ohm load is one many amplifiers are not stable into.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own TW5v2s; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eBuilt one at a time in Tullahoma, Tennessee, with standoffs and a 1 year limited warranty. Questions on fitment or amplifier matching, call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44589858455641,"sku":"PO 13D-S DF TW5","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_89514c88-faa0-489f-b65c-520419a78641.jpg?v=1787975003"},{"product_id":"performance-optimized-wedge-sealed-dual-10-enclosure-jl-audio-10tw3","title":"Performance Optimized Wedge Sealed Dual 10\" Enclosure | JL Audio 10TW3","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 | JL Audio 10TW3\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 10\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.500 ft3 Net Per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.53 ft3 Gross Per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.960\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDual Chamber Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e32.00\" x 15\" x 4.89\/10.35\"\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\u003eTwo JL Audio 10TW3 in a Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eJL Audio's thin-line 10, a 3.268 inch mounting depth on a 15.2 mm one-way motor. The alignment below is computed from published Thiele-Small parameters.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.500 cubic feet net per driver, the same airspace the single version of this cabinet holds. The alignment is identical: Qtc 0.960 either way.\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\u003eA full divider runs floor to ceiling and front to back, giving each 10TW3 its own sealed 0.53 cu ft gross chamber. Neither cone loads against the other, so the pair stays predictable under hard excursion instead of modulating each other's air load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe drivers 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 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 Woofers\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cones 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 JL Audio 10TW3\u003c\/h2\u003e\n\u003cp\u003eAt 0.500 cubic feet net per driver the JL Audio 10TW3 runs a system Qtc of \u003cstrong\u003e0.960\u003c\/strong\u003e with resonance at 50.0 Hz. Half power lands at 40.1 Hz anechoic, before any cabin gain.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eQtc 0.960 · fc 50.0 Hz · F3 40.1 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 9.6060 in at both positions. Driver mounting depth 3.268 in required. 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 and divider 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 both driver positions.\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 Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eEach driver is a dual 4 ohm. Wired in series a driver is 8 ohms, and the pair in parallel gives \u003cstrong\u003e4 ohms\u003c\/strong\u003e. Wiring each driver's coils in parallel and the pair in parallel gives 1 ohm, which needs an amplifier rated for it.\u003c\/p\u003e\n\u003cp\u003ePower handling is 800 watts RMS total across the pair. Aim for roughly 560 to 800 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 drivers are purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eJL Audio 10TW3 Dual: Two Chambers, One Wedge\u003c\/h2\u003e\n\u003cp\u003e0.500 cubic feet net per driver at Qtc 0.960, F3 40.1 Hz, 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":44612419911769,"sku":"PO 10D-S W TW3 BB","price":319.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44612419977305,"sku":"PO 10D-S W TW3 B","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_66446659-0bca-4736-8bb8-4b618079b08d.jpg?v=1788123697"},{"product_id":"performance-optimized-wedge-sealed-dual-10-enclosure-jl-audio-10w6v3","title":"Performance Optimized Wedge Sealed Dual 10\" Enclosure | JL Audio 10W6v3","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 | JL Audio 10W6v3\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 10\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.588 ft3 Net Per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.69 ft3 Gross Per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.790\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDual Chamber Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e24.27\" x 15\" x 8.33\/13.79\"\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\u003eTwo JL Audio 10W6v3 in a Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eJL Audio's W6v3, 19 mm of one-way travel on a 600 watt rating. The alignment below is computed from published Thiele-Small parameters.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.588 cubic feet net per driver. The single version holds 0.550; two 10W6v3 baskets plus the divider set this cabinet's width, and at that width the chambers come out slightly larger. Qtc moves from 0.806 on the single to 0.790 here, which is not a difference you will hear.\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\u003eA full divider runs floor to ceiling and front to back, giving each 10W6v3 its own sealed 0.69 cu ft gross chamber. Neither cone loads against the other, so the pair stays predictable under hard excursion instead of modulating each other's air load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe drivers 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 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 Woofers\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cones 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 JL Audio 10W6v3\u003c\/h2\u003e\n\u003cp\u003eAt 0.588 cubic feet net per driver the JL Audio 10W6v3 runs a system Qtc of \u003cstrong\u003e0.790\u003c\/strong\u003e with resonance at 46.6 Hz. Half power lands at 42.2 Hz anechoic, before any cabin gain.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eQtc 0.790 · fc 46.6 Hz · F3 42.2 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 9.0160 in at both positions. Driver mounting depth 6.890 in required. 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 and divider 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 both driver positions.\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 Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eEach driver is a dual 4 ohm. Wired in series a driver is 8 ohms, and the pair in parallel gives \u003cstrong\u003e4 ohms\u003c\/strong\u003e. Wiring each driver's coils in parallel and the pair in parallel gives 1 ohm, which needs an amplifier rated for it.\u003c\/p\u003e\n\u003cp\u003ePower handling is 1200 watts RMS total across the pair. Aim for roughly 840 to 1200 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 drivers are purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eJL Audio 10W6v3 Dual: Two Chambers, One Wedge\u003c\/h2\u003e\n\u003cp\u003e0.588 cubic feet net per driver at Qtc 0.790, F3 42.2 Hz, 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":44612420173913,"sku":"PO 10D-S W W6 BB","price":319.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44612420403289,"sku":"PO 10D-S W W6 B","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_3e76c071-de54-4534-89e7-86476773dbde.jpg?v=1788123705"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/collections\/JL_Audio_Collection_Header.jpg?v=1788031781","url":"https:\/\/audiointensity.com\/collections\/jl-audio-subwoofer-box.oembed?page=2","provider":"Audio Intensity","version":"1.0","type":"link"}