{"title":"Proline X | X Series Enclosures | Built for the Kicker Solo-X","description":"\u003cdiv class=\"ai-collection-block\"\u003e\n\u003ch2\u003eBuilt for the Solo-X. Engineered for the Limit\u003c\/h2\u003e\n\u003ch3\u003eWhy Enclosure Design Matters More With High-Excursion Drivers\u003c\/h3\u003e\n\u003cp\u003eMost subwoofers will survive a mediocre box. They will lose output, compress early, and sound loose at high power, but they will play. High-excursion drivers like the Solo-X are less forgiving. The motor and suspension are tuned to operate within a specific acoustic load. Put that driver in a box with the wrong volume or wrong port tuning and you are not just leaving output on the table. You are working against the engineering that makes the driver exceptional.\u003c\/p\u003e\n\u003cp\u003eThe Solo-X lineup operates with long xmax ratings and significant cone displacement. That displacement has to go somewhere acoustically. Port area, port length, and internal volume all have to be sized to manage that air movement at the frequencies where the driver is doing its hardest work. Get it wrong and you get port noise, early unloading, or a driver that sounds bloated at low power and harsh at high power. Get it right and you get controlled, pressurized low-frequency output that scales cleanly with power. The X Series gets it right.\u003c\/p\u003e\n\u003ch3\u003eCNC-Cut to Spec, Not CNC-Cut to Fit\u003c\/h3\u003e\n\u003cp\u003eThere is a meaningful difference between a box built on a CNC router and a box engineered for a specific driver. CNC routing is a manufacturing method. It produces consistent cuts and square joints. That matters. But what matters more is what is programmed into the router in the first place.\u003c\/p\u003e\n\u003cp\u003eEvery X Series enclosure starts with the Thiele-Small parameters for the corresponding Solo-X driver. Internal net volume is calculated after accounting for port displacement, bracing, and material thickness. Port dimensions are sized to deliver the target tuning frequency without chuffing at sustained high-power output. The ShopSabre CNC routers we build on hold tolerances that manual fabrication cannot match. Every piece fits precisely. Every joint closes cleanly. That consistency is not cosmetic. It directly affects the acoustic integrity of the finished enclosure.\u003c\/p\u003e\n\u003ch3\u003eDado and V-Groove Joinery for Joint Integrity\u003c\/h3\u003e\n\u003cp\u003eX Series enclosures are constructed using dado and V-groove joinery, the same construction approach used on our Professional Series competition enclosures. Dado joints create a recessed channel in one panel that the mating panel seats into, providing positive mechanical engagement before the adhesive bond is established. V-groove joinery on outside corners produces tighter exterior closure and a cleaner finished edge than butt joints.\u003c\/p\u003e\n\u003cp\u003eThe result is a joint that resists the internal pressure these high-excursion drivers generate at sustained output. Conventional butt-jointed enclosures rely entirely on adhesive shear strength to hold the panels together under load. Dado and V-groove construction adds mechanical interlock to the equation, distributing the load across more contact surface and reducing the risk of joint failure over the long term.\u003c\/p\u003e\n\u003ch3\u003eMatching the Right Configuration to Your Application\u003c\/h3\u003e\n\u003cp\u003eSingle configurations are suited for builds where space is the primary constraint: behind-seat truck installs, trunk builds with limited depth, or systems where a single high-powered driver covers the low-frequency duties. A single Solo-X in a properly tuned enclosure outperforms two drivers in a compromised one.\u003c\/p\u003e\n\u003cp\u003eDouble configurations are the most versatile option in the lineup. Two drivers with port tuning calibrated for the combined displacement. Well-suited for dedicated trunk builds, hatchback setups, and competition builds that need output without going to a triple.\u003c\/p\u003e\n\u003cp\u003eTriple configurations (available for 8\", 10\", and 12\" Solo-X drivers) are competition-oriented. Three drivers, maximum cone area, and a ported enclosure tuned to handle the combined excursion load. Wall builds, bandpass stage builds, and maximum-output installs.\u003c\/p\u003e\n\u003ch3\u003e3\/4\" Langboard Elite MDF: The Correct Material, Correctly Executed\u003c\/h3\u003e\n\u003cp\u003eEvery X Series enclosure is built from 3\/4\" Langboard Elite MDF, the highest-grade MDF available for enclosure construction. At 48.5 lb\/ft³ density and 200 psi internal bond strength, Langboard Elite is dense, consistent, and free of the grain variations and density inconsistencies that cause resonance problems in lower-grade MDF.\u003c\/p\u003e\n\u003cp\u003eJoints are dado and V-groove machined, glued with construction-grade adhesive, and assembled for maximum contact surface. Internal bracing is incorporated where panel size requires it. The finished enclosure is acoustically inert. It does not add color to the output, it does not flex under pressure, and it does not introduce noise. These are bare MDF enclosures ready for carpet, vinyl wrap, or raw installation. No corners are cut on the structure to offset finishing costs.\u003c\/p\u003e\n\u003ch3\u003eTerminal Cup and Hardware\u003c\/h3\u003e\n\u003cp\u003eEvery X Series enclosure ships with a Proline X ABS\/carbon fiber terminal cup featuring stainless hardware and copper ring terminals. Dual configurations ship with two terminal cups (one per driver) for individual wiring runs and amplifier matching flexibility. Triple configurations ship with three terminal cups for the same reason. The terminal cup hardware is rated for the high-current connections that Solo-X-level builds require.\u003c\/p\u003e\n\u003ch3\u003eLarge Format Solo-X: 15\" and 18\" Drivers, Independently Spec'd\u003c\/h3\u003e\n\u003cp\u003eThe 15\" and 18\" X Series enclosures are available in single and double configurations. At these driver sizes the enclosure volume requirements scale significantly. These are not proportionally enlarged versions of the smaller boxes. They are independently spec'd to the Thiele-Small parameters of the 15\" and 18\" Solo-X variants. Internal volume, port area, and tuning frequency are recalculated from the ground up for each driver size. The result is the same acoustic relationship between driver and enclosure that the smaller configurations deliver, regardless of cone diameter.\u003c\/p\u003e\n\u003ch3\u003eEnclosure Only: You Source the Driver, We Handle the Box\u003c\/h3\u003e\n\u003cp\u003eThe X Series is sold without drivers. Solo-X owners typically already have their drivers, or they are sourcing them through their preferred channel. What they need is the correctly tuned enclosure to make those drivers perform. No loaded option. No bundle. No generic box dressed up with driver-specific marketing.\u003c\/p\u003e\n\u003cp\u003eEvery X Series enclosure is spec'd to a specific Solo-X driver size and configuration, built in-house at our Tennessee facility on ShopSabre CNC equipment, and shipped ready to load your driver.\u003c\/p\u003e\n\u003caside class=\"ai-callout-cta\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eQuestions on Matching X Series to Your Solo-X Build?\u003c\/p\u003e\n\u003cp\u003eIf you need guidance on matching the right configuration to your power level or vehicle application, contact us before ordering. We competition-build with these drivers and can speak to real-world results across configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-contact-phone\"\u003e707-999-3071 |\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\u003c\/div\u003e\n\u003cdiv class=\"ai-faq-section\"\u003e\n\u003ch2\u003eFrequently Asked X Series Solo-X Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat's included with an X Series enclosure?\u003c\/h3\u003e\n\u003cp\u003eThe complete CNC-cut and assembled enclosure built from 3\/4\" Langboard Elite MDF with dado and V-groove joinery, plus the Proline X ABS\/carbon fiber terminal cup with stainless hardware and copper ring terminals. Dual configurations ship with two terminal cups; triple configurations ship with three. The driver is not included; the enclosure is sold as enclosure-only.\u003c\/p\u003e\n\u003ch3\u003eWhy isn't the driver included?\u003c\/h3\u003e\n\u003cp\u003eSolo-X owners typically already have their drivers, or are sourcing them through their preferred channel. Loading drivers we don't need to sell allows us to focus on what we do best: precision enclosure manufacturing for the Solo-X lineup. Every X Series enclosure is spec'd to a specific Solo-X driver size and configuration, built to deliver the acoustic foundation those drivers need to perform.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between single, double, and triple configurations?\u003c\/h3\u003e\n\u003cp\u003eSingle configurations house one Solo-X driver with port tuning calibrated for that single driver's displacement. Double configurations house two drivers with the port tuning recalculated for combined displacement (not just doubled). Triple configurations house three drivers in a competition-oriented build with maximum cone area and port tuning that handles the combined excursion load. Triples are available for the 8\", 10\", and 12\" Solo-X. Singles and doubles are available across all driver sizes including 15\" and 18\".\u003c\/p\u003e\n\u003ch3\u003eHow are the enclosures tuned?\u003c\/h3\u003e\n\u003cp\u003eInternal volume, port area, port length, and tuning frequency are calculated from the Thiele-Small parameters of the specific Solo-X driver and configuration. We don't scale up a generic box and call it driver-specific. Each X Series SKU is engineered to deliver the target tuning frequency without port chuffing at sustained high-power output.\u003c\/p\u003e\n\u003ch3\u003eWhat construction method is used?\u003c\/h3\u003e\n\u003cp\u003eDado and V-groove joinery, the same construction approach used on our Professional Series competition enclosures. Dado joints create mechanical interlock between panels before the adhesive bond is established. V-groove joinery on outside corners produces tighter exterior closure than butt joints. The result is joint integrity that resists the internal pressure high-excursion drivers like the Solo-X generate at sustained output.\u003c\/p\u003e\n\u003ch3\u003eAre these enclosures finished or ready to wrap?\u003c\/h3\u003e\n\u003cp\u003eBare MDF, ready for carpet, vinyl wrap, or raw installation. No surface finishing applied at the factory; the buyer or installer chooses the finish that suits the build environment. Internal surfaces are clean and ready for the driver.\u003c\/p\u003e\n\u003ch3\u003eWhat's the warranty?\u003c\/h3\u003e\n\u003cp\u003e2-year warranty on materials and construction. Full coverage on any defect in the MDF, the joinery, or the terminal cup hardware. The warranty does not cover damage from improper installation or driver overload.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"proline-x-professional-series-enclosure-for-single-kickersolo-x-12","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 12\" Subwoofer","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .xs-hero { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; color: white; }\n  .xs-hero .xs-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .xs-hero .xs-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .xs-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .xs-badge { background: rgba(245, 158, 11, 0.2); 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}\n  .xs-variant { background: #ffffff; border: 2px solid #e2e8f0; border-radius: 8px; padding: 24px; text-align: center; }\n  .xs-variant.featured { border-color: #f59e0b; }\n  .xs-variant h4 { color: #0f172a; font-size: 1.1em; font-weight: 700; margin: 0 0 8px 0; }\n  .xs-variant .price { font-size: 1.6em; font-weight: 800; color: #92400e; margin: 8px 0; }\n  .xs-variant p { font-size: 0.95em; color: #64748b; margin: 0; }\n  .xs-cta { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; color: white; }\n  .xs-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .xs-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  .xs-disclaimer { font-size: 0.85em; opacity: 0.7; font-style: italic; margin-top: 20px; }\n  @media (max-width: 768px) {\n    .xs-hero { padding: 40px 20px; }\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-variant-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"xs-wrap\"\u003e\n\n  \u003cdiv class=\"xs-hero\"\u003e\n    \u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 12 SX\u003c\/p\u003e\n    \u003cp class=\"xs-subtitle\"\u003eSingle 12\" Ported Enclosure | Built for the Kicker Solo-X L7X\u003c\/p\u003e\n    \u003cdiv class=\"xs-badges\"\u003e\n      \u003cspan class=\"xs-badge\"\u003e3.0 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e31 Hz Tuning\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eTriple-Layer Baffle\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e32\" × 15\" × 22.75\"\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eThe Solo-X 12\" Deserves More Than a Generic Box.\u003c\/h2\u003e\n    \u003cp\u003eThe Kicker Solo-X L7X 12\" is a large-format competition subwoofer built for sustained high-power output. Triple-stacked ferrite magnets, a 3\" voice coil, dual-spider suspension, and an Xmax spec that demands real airspace to operate correctly. A generic 12\" ported box approximates the volume and calls it close enough. The Pro KIK 12 SX does not approximate — it is built to 3.0 cubic feet net, tuned to 31 Hz, with 44 square inches of port area, derived from the L7X 12\"'s published Thiele-Small parameters.\u003c\/p\u003e\n    \u003cp\u003eBuying a Solo-X and putting it in a cheap box is a waste of the driver. This enclosure is not a cheap box. It is the enclosure the L7X 12\" was designed to work in.\u003c\/p\u003e\n    \u003cp\u003eThis is an enclosure-only product. You source the driver — we handle the box. The square baffle cutout is machined specifically to the L7X 12\" platform geometry. This enclosure is not cross-compatible with round 12\" drivers.\u003c\/p\u003e\n    \u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 12\".\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eWhy This Enclosure for the Solo-X L7X 12\"\u003c\/h2\u003e\n    \u003cp\u003eThe L7X 12\" is a high-excursion driver with a motor structure that generates significant back-pressure at sustained output. Its suspension is tuned for a specific range of vented airspace. Outside of that range — too small, port tuned too high, port area too restrictive — the driver over-excurses below port tuning, output compresses, and you lose the low-end extension the motor is built to produce. Inside of it, the driver operates in its linear range and delivers what the motor is capable of.\u003c\/p\u003e\n    \u003cp\u003eAt 3.0 ft³ net and 31 Hz tuning, the Pro KIK 12 SX keeps the L7X 12\" in that linear operating range. The 44 square inches of port area is sized to handle the displacement this driver generates at sustained 1000–2000W RMS input without chuffing. The 22.75\" depth gives the motor assembly the clearance it needs for the Forced-Air Cooling system to function correctly. None of these numbers are arbitrary — each one is a consequence of building to the driver's published spec.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e3.0 ft³ — Driver-Specific Volume\u003c\/h4\u003e\n        \u003cp\u003eThe 3.0 ft³ net internal volume is the correct airspace for the L7X 12\" in a ported alignment at 31 Hz. This is the volume at which the driver's suspension compliance operates in its linear range — not undersized, not oversized, not a round number chosen for convenience.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e31 Hz Tuning\u003c\/h4\u003e\n        \u003cp\u003eShared with the single 10\" configuration but arrived at independently — the L7X 12\"'s larger cone area and higher Xmax call for the same low tuning frequency. The result is deep, controlled low-end extension that a higher-tuned generic 12\" enclosure cannot deliver at this driver's output level.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e44 sq in Port Area\u003c\/h4\u003e\n        \u003cp\u003eThe largest port area in the single-driver X Series lineup, scaled to the displacement the L7X 12\" generates under load. At 44 square inches, air velocity stays clean at sustained high-power input — no chuffing, no port compression, no turbulence artifacts at the 31 Hz tuning point where this driver operates hardest.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e22.75\" Depth — Motor Clearance Matters\u003c\/h4\u003e\n        \u003cp\u003eThe L7X 12\" motor assembly is deep. The 22.75\" enclosure depth provides correct clearance for the magnet assembly and supports the Forced-Air Cooling system's ability to draw airflow through the motor structure at sustained output. Insufficient depth restricts cooling and limits sustained power handling.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eConstruction: Scaled for a Large-Format Competition Driver\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 12 SX uses the same construction methodology as every Proline X enclosure — Langboard Elite MDF, V-groove and dado joinery, extensive internal bracing, in-house terminal cup, hand-assembled in Tennessee. At 3.0 ft³ net the panel spans are the largest in the single-driver X Series. The construction specs are not scaled down from the smaller configurations — they are applied consistently regardless of size.\u003c\/p\u003e\n\n    \u003ch3\u003eTriple-Layer Mounting Baffle — 2.25\" Minimum\u003c\/h3\u003e\n    \u003cp\u003eThe Pro KIK 12 SX runs a triple-layer front baffle. The L7X 12\" motor assembly is one of the heaviest in the Solo-X lineup — triple-stacked ferrite magnets, 3\" voice coil, dual-spider suspension. That motor mass cycling against the front panel at high excursion requires more rigidity than a dual-layer baffle provides. The triple-layer construction keeps the driver seated, both gasket seals intact, and the baffle acoustically inert under sustained competition-power input.\u003c\/p\u003e\n\n    \u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n    \u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. At 3.0 ft³ net internal volume with 44 square inches of port area, the pressure cycling through this enclosure at high power is significant. Panel stock with published internal bond and modulus of elasticity data is not a marketing choice — it is an engineering one.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; a large-format ported enclosure at competition power levels cycles significant pressure through every panel joint on every bass note\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; at 3.0 ft³ the unsupported panel spans are larger than any other single-driver X Series enclosure — stiffness matters more here, not less\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the vibration load of the L7X 12\" motor assembly at excursion\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n    \u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. At 3.0 ft³ with 44 square inches of port area, the internal pressure on every joint under sustained high-power input is proportionally higher than on smaller configurations. The dado interlock resists shear forces regardless of glue condition over time. A leaking seam on a 3.0 ft³ 31 Hz enclosure is an acoustic failure — the tuning shifts and the port response degrades immediately.\u003c\/p\u003e\n\n    \u003ch3\u003eExtensive Internal Bracing\u003c\/h3\u003e\n    \u003cp\u003eThe Pro KIK 12 SX is braced throughout the internal structure. At 3.0 ft³ the panel spans are the largest in the single-driver lineup — the side panels, top, and rear panel all have more unsupported surface area than the smaller configurations. Bracing is placed to control resonance across those surfaces at the frequencies the L7X 12\" generates under load. The result is an enclosure that stays acoustically inert at sustained competition-power output.\u003c\/p\u003e\n\n    \u003ch3\u003eIn-House Terminal Cup\u003c\/h3\u003e\n    \u003cp\u003eThe terminal cup is built in-house at our Tennessee facility. The recessed ABS\/Carbon Fiber Composite cup features stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. For high-power builds in this class, we recommend upgrading to 8 AWG wiring from the terminal cup to the amplifier — the terminal cup accepts it.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n        \u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. The square baffle cutout is machined to direct-fit the Solo-X L7X 12\" mounting flange — no adapter, no modification required. The 11-1\/16\" square opening is held to tolerance so the driver mounts cleanly and the gasket seals correctly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n        \u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. No overseas manufacturing. No batch shortcuts. Each unit is built individually and checked for volume accuracy, joint integrity, and port clearance before leaving the floor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFinish \u0026amp; Options\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 12 SX is finished in Plush Black carpet and available in two configurations. Both ship assembled and ready to install. Lead time is 2–4 business days.\u003c\/p\u003e\n    \u003cdiv class=\"xs-variant-grid\"\u003e\n      \u003cdiv class=\"xs-variant\"\u003e\n        \u003ch4\u003eStandard — Carpet Only\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$729.99\u003c\/div\u003e\n        \u003cp\u003ePlush Black carpet finish. Recessed ABS\/Carbon Fiber Composite terminal cup. Pre-wired with 12g OFC speaker wire. Shipping included.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-variant featured\"\u003e\n        \u003ch4\u003eWith Front Acrylic Panel\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$799.99\u003c\/div\u003e\n        \u003cp\u003eEverything in Standard plus a laser-etched custom Proline X Hex and Flag acrylic graphics panel on the front baffle. Show-quality finish that identifies this as a purpose-built competition enclosure.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"xs-warranty\"\u003e\n      \u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n      \u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 12 SX is purpose-built for the Kicker Solo-X L7X 12\" in both available impedance configurations — the 1Ω DVC and the 2Ω DVC. The baffle cutout is machined to the L7X square cone geometry at 11-1\/16\" square. This enclosure is not cross-compatible with round 12\" drivers. At 22.75\" deep, verify your available install depth before ordering — this is the binding dimension in most trunk applications at this driver size.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 32\" W × 15\" H × 22.75\" D\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 3.0 ft³\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 31 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 44 sq in\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eBaffle Cutout:\u003c\/strong\u003e 11-1\/16\" Square — Direct Fit L7X 12\"\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eMax Mounting Depth:\u003c\/strong\u003e 16\"\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFront Baffle Thickness:\u003c\/strong\u003e Triple-Layer\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eRecommended Power:\u003c\/strong\u003e 1000–2000W RMS\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 60–70 lbs\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eDedicated Trunk Builds\u003c\/h4\u003e\n        \u003cp\u003eAt 32\" wide and 22.75\" deep, the Pro KIK 12 SX is a dedicated trunk build enclosure. Depth is the primary constraint — 22.75\" is required to achieve 3.0 ft³ net with 44 sq in of port area. Measure your available trunk depth before ordering, accounting for rear seat intrusion and spare tire well clearance.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eFull-Size Sedan \u0026amp; SUV Cargo Builds\u003c\/h4\u003e\n        \u003cp\u003eThe 32\" width and 15\" height fit most full-size sedan trunks and SUV cargo areas. The 15\" height keeps the enclosure below the window line in most sedan applications — useful for builds where rear visibility matters.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHigh-Output Daily Driver\u003c\/h4\u003e\n        \u003cp\u003eA correctly loaded Solo-X L7X 12\" at 1000–2000W RMS in a 31 Hz tuned enclosure produces the kind of low-end extension that a higher-tuned generic box at the same power level cannot match. The correct enclosure makes a measurable difference at this driver size and power class.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eSPL \u0026amp; Competition Builds\u003c\/h4\u003e\n        \u003cp\u003eThe L7X 12\" is a competition-class driver. The Pro KIK 12 SX is built to competition-grade construction standards — triple-layer baffle, dado joinery, Langboard Elite MDF, extensive internal bracing. This enclosure does not compromise on the build quality the driver requires at sustained competition power.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-cta\"\u003e\n    \u003ch2\u003eBuilt for the Driver. Built in Tennessee.\u003c\/h2\u003e\n    \u003cp\u003eThe Proline X Pro KIK 12 SX is not a generic 12\" ported box. It is built to 3.0 ft³ net, tuned to 31 Hz, with 44 square inches of port area — every number derived from the Solo-X L7X 12\"'s published Thiele-Small parameters. Langboard Elite MDF. Triple-layer baffle. Extensive internal bracing. V-groove and dado joinery. Hand-assembled and inspected in Tennessee before it ships. Backed by a 2-year warranty.\u003c\/p\u003e\n    \u003cp\u003eYou source the driver. We handle the box. \u003cstrong\u003eStandard $729.99 | With Acrylic Panel $799.99. Shipping included. 2–4 day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 12\".\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"None - Carpet Only","offer_id":43165514334297,"sku":"Pro KIK 12 SX- None","price":749.99,"currency_code":"USD","in_stock":true},{"title":"Standard - Hex and Flag","offer_id":43165514367065,"sku":"Pro KIK 12 SX-Hex","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofersubwoofer-enclosuresproline-x-9950209.jpg?v=1774479103"},{"product_id":"kicker-solo-x-15-box-proline-x-series-professional-enclosure","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 15\" Subwoofer","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; 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}\n  .xs-variant h4 { color: #0f172a; font-size: 1.1em; font-weight: 700; margin: 0 0 8px 0; }\n  .xs-variant .price { font-size: 1.6em; font-weight: 800; color: #92400e; margin: 8px 0; }\n  .xs-variant p { font-size: 0.95em; color: #64748b; margin: 0; }\n  .xs-cta { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; color: white; }\n  .xs-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .xs-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  .xs-disclaimer { font-size: 0.85em; opacity: 0.7; font-style: italic; margin-top: 20px; }\n  @media (max-width: 768px) {\n    .xs-hero { padding: 40px 20px; }\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-variant-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"xs-wrap\"\u003e\n\n  \u003cdiv class=\"xs-hero\"\u003e\n    \u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 15 X\u003c\/p\u003e\n    \u003cp class=\"xs-subtitle\"\u003eSingle 15\" Ported Enclosure | Built for the Kicker Solo-X L7X\u003c\/p\u003e\n    \u003cdiv class=\"xs-badges\"\u003e\n      \u003cspan class=\"xs-badge\"\u003e5.0 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e30 Hz Tuning\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eTriple-Layer Baffle\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e40\" × 18\" × 22.75\"\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e70 sq in Port\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eThe Largest Single-Driver Enclosure in the X Series. Built Accordingly.\u003c\/h2\u003e\n    \u003cp\u003eThe Solo-X L7X 15\" is the largest driver in the X Series lineup — triple-stacked ferrite magnets, a 406 oz. magnet assembly, a 3\" voice coil, dual-spider suspension, and an Xmax that requires real airspace to operate in its linear range. Kicker's published enclosure recommendation for the L7X 15\" is 5.0 cubic feet net, vented, tuned to 30 Hz. The Pro KIK 15 X is built to exactly that specification.\u003c\/p\u003e\n    \u003cp\u003eAt 40\" wide, 18\" tall, and 22.75\" deep, this is a dedicated build enclosure. It does not fit in compact installs and it does not pretend to. It is sized for the acoustic load a 15\" competition driver requires — and every internal dimension is a consequence of that requirement, not of a cost or space target.\u003c\/p\u003e\n    \u003cp\u003eThis is an enclosure-only product. You source the driver — we handle the box. The square baffle cutout is machined specifically to the L7X 15\" platform geometry. This enclosure is not cross-compatible with round 15\" drivers.\u003c\/p\u003e\n    \u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 15\".\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eWhy This Enclosure for the Solo-X L7X 15\"\u003c\/h2\u003e\n    \u003cp\u003eThe L7X 15\" has a 406 oz. magnet assembly — the heaviest in the X Series lineup. At 1000–2000W RMS sustained input, this motor generates more back-pressure, more excursion force, and more heat than any single driver in the X Series. Every construction decision on this enclosure scales to match that output level.\u003c\/p\u003e\n    \u003cp\u003eThe 5.0 ft³ net internal volume keeps the driver's suspension compliance in its linear operating range at the 30 Hz tuning point. The 70 square inches of port area — the largest in the single-driver X Series — is sized to handle the displacement this driver generates at sustained competition power without port compression or chuffing. The 4.25\" × 16.5\" port opening is Kicker's own published port geometry for this driver. The Pro KIK 15 X is built to it.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e5.0 ft³ — Driver-Specific Volume\u003c\/h4\u003e\n        \u003cp\u003eKicker's published vented enclosure recommendation for the L7X 15\" is 5.0 ft³ net. This is the volume at which the driver's suspension compliance operates in its linear range at 30 Hz tuning. No approximation — the Pro KIK 15 X is built to that number after accounting for port displacement, triple-layer baffle thickness, and bracing material.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e30 Hz Tuning\u003c\/h4\u003e\n        \u003cp\u003eThe lowest tuning frequency in the X Series lineup, matched to the L7X 15\"'s larger cone area and higher displacement. At 30 Hz this enclosure reaches lower than any other single-driver configuration in the lineup — the output the motor is capable of producing at the frequencies the cone is large enough to move.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e70 sq in Port Area\u003c\/h4\u003e\n        \u003cp\u003eThe 70 square inch port area is the largest in the single-driver X Series. At this driver size and power level, port area is the limiting factor on clean sustained output — undersized port area produces chuffing and compression at high input levels. The Pro KIK 15 X is sized so the port stays clean at the L7X 15\"'s rated 1000–2000W RMS input range.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e406 oz. Motor — Everything Scales Up\u003c\/h4\u003e\n        \u003cp\u003eThe L7X 15\" magnet assembly weighs 406 oz. — nearly double the 8\" configuration. At high excursion that mass cycles against the front baffle with proportionally more force. Every construction upgrade on this enclosure — triple-layer baffle, extreme internal bracing, Langboard Elite MDF — exists because this motor demands it.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eConstruction: Built for a 406 oz. Motor at Competition Power\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15 X uses the same construction methodology as every Proline X enclosure — Langboard Elite MDF, V-groove and dado joinery, extreme internal cross-bracing, in-house terminal cup, hand-assembled in Tennessee. At 5.0 ft³ net the panel spans are the largest in the X Series. The construction specs are applied to scale.\u003c\/p\u003e\n\n    \u003ch3\u003eTriple-Layer Mounting Baffle\u003c\/h3\u003e\n    \u003cp\u003eThe Pro KIK 15 X runs a triple-layer front baffle. The L7X 15\" motor assembly at 406 oz. generates more excursion force against the front panel than any single driver in the lineup. Triple-layer construction provides the mass and rigidity this motor requires to stay seated, sealed, and acoustically inert under sustained 1000–2000W RMS input. This is not an upgrade from the smaller configurations — it is the minimum correct specification for a driver this size at this power class.\u003c\/p\u003e\n\n    \u003ch3\u003eExtreme Internal Cross-Bracing\u003c\/h3\u003e\n    \u003cp\u003eThe Pro KIK 15 X uses extreme internal cross-bracing throughout the structure — more aggressive than the standard internal bracing on the smaller X Series enclosures. At 5.0 ft³ net the unsupported panel spans on the side panels, top, and rear are significantly larger than any other configuration in the lineup. Cross-bracing at the structural level controls panel resonance across those larger surfaces at 30 Hz — the frequency where a 15\" driver operating at full output generates the most panel-loading force. The bass you hear comes from the driver, not the box.\u003c\/p\u003e\n\n    \u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n    \u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. At 5.0 ft³ with 70 square inches of port area running at 1000–2000W RMS sustained input, the pressure cycling through this enclosure is at the upper end of what any single-driver enclosure in this lineup sees. Panel stock with a published 200 psi internal bond rating is not a preference — it is a structural requirement at this output class.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; at 5.0 ft³ and 70 sq in of port area the pressure generated at competition power levels is significant across every panel joint\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; the largest unsupported panel spans in the single-driver X Series lineup demand the highest stiffness the material can provide\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the vibration load of a 406 oz. motor assembly at excursion\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n    \u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. At 5.0 ft³ tuned to 30 Hz the internal pressure on every joint under sustained high-power input is at the upper end of what any single-driver ported enclosure generates. The dado interlock resists shear forces regardless of glue condition over time. A leaking seam at this tuning frequency and enclosure volume is an immediate and significant acoustic failure.\u003c\/p\u003e\n\n    \u003ch3\u003eIn-House Terminal Cup\u003c\/h3\u003e\n    \u003cp\u003eThe terminal cup is built in-house at our Tennessee facility. The recessed ABS\/Carbon Fiber Composite cup features stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. At 1000–2000W RMS sustained input, run 8 AWG or larger wiring from the terminal cup to the amplifier — the cup accepts it. Do not run 12g wire from terminal to amplifier at the upper end of this power range.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n        \u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. The square baffle cutout is machined to direct-fit the Solo-X L7X 15\" mounting flange. Internal volume of every Pro KIK 15 X is identical to spec — the 30 Hz tuning is accurate, not nominal.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n        \u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. No overseas manufacturing. Each unit is built individually and checked for volume accuracy, joint integrity, and port clearance before leaving the floor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFinish \u0026amp; Options\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15 X is finished in Plush Black carpet and available in two configurations. Both ship freight to the lower 48 states — freight is included in the price. Lead time is 2–4 business days.\u003c\/p\u003e\n    \u003cdiv class=\"xs-variant-grid\"\u003e\n      \u003cdiv class=\"xs-variant\"\u003e\n        \u003ch4\u003eStandard — Carpet Only\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$999.99\u003c\/div\u003e\n        \u003cp\u003ePlush Black carpet finish. Recessed ABS\/Carbon Fiber Composite terminal cup. Pre-wired with 12g OFC speaker wire. Freight shipping included.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-variant featured\"\u003e\n        \u003ch4\u003eWith Front Acrylic Panel\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003eSee variant selector\u003c\/div\u003e\n        \u003cp\u003eEverything in Standard plus a laser-etched custom Proline X Hex and Flag High Gloss acrylic graphics panel on the front baffle. Show-quality finish for competition and demo builds.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"xs-freight\"\u003e\n      \u003cp\u003e\u003cstrong\u003eFreight Shipping — Included in Price\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp\u003eThe Pro KIK 15 X ships via freight carrier to the lower 48 states. Freight is included in the price — no additional shipping line item at checkout. Delivery requires a scheduled appointment with the freight carrier. Inspect the packaging before signing for delivery and photograph any exterior damage before opening. Do not sign for a visibly damaged shipment without noting the damage on the delivery receipt.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"xs-warranty\"\u003e\n      \u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n      \u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15 X is purpose-built for the Kicker Solo-X L7X 15\" in both available impedance configurations — the 1Ω DVC (49L7X151) and the 2Ω DVC (49L7X152). The baffle cutout is machined to the L7X square cone geometry. This enclosure is not cross-compatible with round 15\" drivers. At 40\" wide and 22.75\" deep, measure your available install space carefully — both width and depth are binding constraints at this enclosure size.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 40\" W × 18\" H × 22.75\" D\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 5.0 ft³\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 30 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 70 sq in\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Opening:\u003c\/strong\u003e 4.25\" × 16.5\"\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFront Baffle:\u003c\/strong\u003e Triple-Layer MDF\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eRecommended Power:\u003c\/strong\u003e 1000–2000W RMS\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eCompatible Driver:\u003c\/strong\u003e Kicker Solo-X L7X 15\" — 1Ω DVC (49L7X151) or 2Ω DVC (49L7X152)\n    \u003c\/p\u003e\n\u003c\/div\u003e\n\n    \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eFull-Size Trunk Builds\u003c\/h4\u003e\n        \u003cp\u003eAt 40\" wide and 22.75\" deep the Pro KIK 15 X requires a full-size trunk. Measure width at the narrowest point of your trunk opening — 40\" clears most full-size sedans and trucks but not all. Depth at 22.75\" requires the enclosure to be positioned against the rear seat back with sufficient floor clearance for the port.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eSUV \u0026amp; Truck Cargo Builds\u003c\/h4\u003e\n        \u003cp\u003eFull-size SUV and truck cargo areas with flat load floors are the natural home for this enclosure. The 18\" height keeps it below the window line in most SUV configurations. Secure the enclosure to prevent movement under sustained high-power output — at this size and weight, an unsecured enclosure is a safety issue.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eDedicated SPL Builds\u003c\/h4\u003e\n        \u003cp\u003eThe L7X 15\" in a correctly tuned 5.0 ft³ enclosure at 1000–2000W RMS is a competition-capable setup. The Pro KIK 15 X is built to competition construction standards — triple-layer baffle, extreme cross-bracing, dado joinery, Langboard Elite MDF — for builds that will be pushed to the driver's rated limits on a regular basis.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHigh-Output Daily Driver\u003c\/h4\u003e\n        \u003cp\u003eA Solo-X L7X 15\" in a 30 Hz tuned 5.0 ft³ enclosure produces low-end extension that no smaller driver in a correctly tuned box can match. If the vehicle and install space accommodate this enclosure, the acoustic result is the deepest, highest-output configuration in the single-driver X Series lineup.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-cta\"\u003e\n    \u003ch2\u003eThe Top of the Single-Driver Lineup. Built in Tennessee.\u003c\/h2\u003e\n    \u003cp\u003eThe Proline X Pro KIK 15 X is built to Kicker's published specification for the Solo-X L7X 15\" — 5.0 ft³ net, 30 Hz tuning, 70 square inches of port area. Langboard Elite MDF. Triple-layer baffle. Extreme internal cross-bracing. V-groove and dado joinery. Hand-assembled and inspected in Tennessee before it ships. Freight included. Backed by a 2-year warranty.\u003c\/p\u003e\n    \u003cp\u003eYou source the driver. We handle the box. \u003cstrong\u003eStarting at $999.99. Freight shipping included. 2–4 day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 15\".\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"None - Carpet Only","offer_id":43165241147481,"sku":"Pro KIK 15 X | None","price":999.99,"currency_code":"USD","in_stock":true},{"title":"Standard - Hex and Flag","offer_id":43165241180249,"sku":"Pro KIK 15 X | Hex","price":1099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofer-dualsubwoofer-enclosuresproline-x-1023143.jpg?v=1774078266"},{"product_id":"proline-x-professional-series-enclosure-for-dual-kicker-solo-x-15","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 15\" Subwoofer | Dual","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; 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}\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-orientation-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"xs-wrap\"\u003e\n\n  \u003cdiv class=\"xs-hero\"\u003e\n    \u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 15D Solo X\u003c\/p\u003e\n    \u003cp class=\"xs-subtitle\"\u003eDual 15\" SUV-Style Enclosure | Upfiring Drivers | Rear Port | Built for Two Kicker Solo-X L7X\u003c\/p\u003e\n    \u003cdiv class=\"xs-badges\"\u003e\n      \u003cspan class=\"xs-badge\"\u003e10.0 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e30 Hz Tuning\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e140 sq in Port\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e46.5\" × 19.5\" × 35\"\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eDrivers Fire Up\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eTwo Solo-X 15\" Drivers. SUV-Style. Built for the Cargo Floor.\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15D Solo X is the largest enclosure in the X Series lineup and the only dual-driver configuration designed specifically for full-size SUV and truck cargo builds. Both Solo-X L7X 15\" drivers mount through the top face and fire upward into the cargo area. The port exits through the rear panel and loads toward the rear gate. Two terminal cups sit on the rear panel opposite the port for clean wiring access from the gate area.\u003c\/p\u003e\n    \u003cp\u003eThis is not a trunk-forward enclosure repositioned for SUV use. The SUV-style orientation is built into the design — the driver cutouts, port geometry, and terminal cup placement are all specified for upfiring driver orientation on a flat cargo floor. Running two Solo-X L7X 15\" drivers in a shared 10.0 ft³ enclosure tuned to 30 Hz with 140 square inches of port area produces output at the top of what any single-vehicle enclosure in this lineup is capable of.\u003c\/p\u003e\n    \u003cp\u003eThis is an enclosure-only product. You source the drivers — we handle the box.\u003c\/p\u003e\n    \u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 15\".\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eOrientation — How This Enclosure Is Configured\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15D Solo X uses a purpose-built SUV-style orientation. Every face of this enclosure has a defined function. Understand the layout before installation.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-orientation\"\u003e\n      \u003ch3\u003ePanel Orientation Guide\u003c\/h3\u003e\n      \u003cdiv class=\"xs-orientation-grid\"\u003e\n        \u003cdiv class=\"xs-orientation-item\"\u003e\n          \u003cdiv class=\"face\"\u003eTop Face\u003c\/div\u003e\n          \u003cdiv class=\"role\"\u003eDriver Baffles\u003c\/div\u003e\n          \u003cdiv class=\"detail\"\u003eTwo square L7X 15\" cutouts — drivers fire upward toward headliner\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"xs-orientation-item\"\u003e\n          \u003cdiv class=\"face\"\u003eRear Panel\u003c\/div\u003e\n          \u003cdiv class=\"role\"\u003ePort + Terminal Cups\u003c\/div\u003e\n          \u003cdiv class=\"detail\"\u003ePort exits rearward toward gate — two terminal cups opposite the port\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"xs-orientation-item\"\u003e\n          \u003cdiv class=\"face\"\u003eBottom Face\u003c\/div\u003e\n          \u003cdiv class=\"role\"\u003eCargo Floor Contact\u003c\/div\u003e\n          \u003cdiv class=\"detail\"\u003eEnclosure rests on cargo floor — secure to prevent movement under output\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e10.0 ft³ — Dual 15\" Specific Volume\u003c\/h4\u003e\n        \u003cp\u003eTwo Solo-X L7X 15\" drivers in a shared enclosure require a volume calculated for their combined Thiele-Small parameters — not double the single 15\" volume. 10.0 ft³ net is the correct airspace for two L7X 15\" drivers in a shared vented alignment at 30 Hz, after accounting for port displacement, triple-layer baffle thickness, and bracing.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e30 Hz Tuning\u003c\/h4\u003e\n        \u003cp\u003eThe same tuning frequency as the single 15\" — arrived at independently for the dual-driver combined T\/S parameters. Two L7X 15\" motors in a correctly sized shared enclosure at 30 Hz produce the deepest, highest-output response in the X Series lineup.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e140 sq in Port Area\u003c\/h4\u003e\n        \u003cp\u003eDouble the single 15\" port area — scaled directly to the combined displacement of two L7X 15\" drivers at sustained high-power input. At 140 square inches, air velocity stays clean at the combined rated input range of two competition-class 15\" drivers. Port compression and chuffing are not acceptable at this output level — the port area ensures they do not occur.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eUpfiring Configuration — Why It Works in SUVs\u003c\/h4\u003e\n        \u003cp\u003eIn a full-size SUV or truck, the cargo floor-to-headliner distance creates a large acoustic space directly above the enclosure. Upfiring drivers pressurize that space efficiently and the rear-exiting port loads toward the gate opening. This orientation consistently produces strong cabin pressurization in large-format vehicles where trunk-forward builds are not practical or possible.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eConstruction: The Most Demanding Build in the X Series\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15D Solo X uses the same construction methodology as every Proline X enclosure — Langboard Elite MDF, V-groove and dado joinery, extreme internal cross-bracing, in-house terminal cups, hand-assembled in Tennessee. Two 406 oz. motor assemblies in a 10.0 ft³ enclosure at competition power levels represent the highest structural demand in the X Series lineup. The construction specs match that demand.\u003c\/p\u003e\n\n    \u003ch3\u003eTriple-Layer Top Baffle\u003c\/h3\u003e\n    \u003cp\u003eBoth driver cutouts are in the top face of the enclosure, which serves as the mounting baffle. This panel carries the full weight and excursion load of two L7X 15\" motor assemblies — 812 oz. of combined magnet weight cycling against a single panel at sustained high-power input. Triple-layer construction at the top baffle is not optional at this driver count and power class. It is the minimum correct specification for two 406 oz. motors in an upfiring orientation.\u003c\/p\u003e\n\n    \u003ch3\u003eExtreme Internal Cross-Bracing\u003c\/h3\u003e\n    \u003cp\u003eAt 10.0 ft³ net, the internal panel spans are the largest in the X Series. The side panels, front, and bottom face all have significant unsupported surface area. Extreme cross-bracing at the structural level controls panel resonance across those surfaces at 30 Hz under combined dual-driver load. The result is an enclosure that stays acoustically inert regardless of what two Solo-X 15\" drivers generate at full power.\u003c\/p\u003e\n\n    \u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n    \u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. At 10.0 ft³ with 140 square inches of port area at dual-driver competition power, the pressure cycling through this enclosure is at the upper limit of what any single-enclosure build in the lineup generates. Langboard Elite's 200 psi internal bond rating is the structural foundation that keeps this enclosure performing correctly over time.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; two L7X 15\" drivers at sustained competition power generate the highest pressure load in the X Series lineup\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; at 10.0 ft³ the unsupported panel spans require maximum stiffness to stay inert at 30 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the combined vibration load of two 406 oz. motor assemblies at excursion\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n    \u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. In a 10.0 ft³ enclosure tuned to 30 Hz with two competition-class drivers generating combined back-pressure on every bass transient, joint integrity is structural integrity. The dado interlock resists shear forces regardless of glue condition over time.\u003c\/p\u003e\n\n    \u003ch3\u003eDual In-House Terminal Cups\u003c\/h3\u003e\n    \u003cp\u003eBoth terminal cups are built in-house at our Tennessee facility and mounted on the rear panel opposite the port. The recessed ABS\/Carbon Fiber Composite cups feature stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. Rear panel placement puts both cups in accessible position from the rear gate area. Run 8 AWG or larger from each terminal cup to the amplifier at this power class.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n        \u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. Both square L7X 15\" cutouts are machined to direct-fit the Solo-X mounting flanges on the top face. Internal volume of every Pro KIK 15D Solo X is identical to spec.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n        \u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. At this size and weight, build consistency matters — each unit is individually checked for volume accuracy, joint integrity, port clearance, and terminal cup seating before leaving the floor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFinish \u0026amp; Shipping\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15D Solo X is finished in Plush Black carpet with High Gloss Lasered Acrylic Inserts included. Single configuration — acrylic is standard. Lead time is 5–7 business days. [CONFIRM: acrylic panel placement — top face, front face, or both.]\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-freight\"\u003e\n      \u003cp\u003e\u003cstrong\u003eFreight Shipping — Included in Price — Required\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp\u003eThe Pro KIK 15D Solo X ships at 200+ lbs and requires freight shipping. Freight is included in the price — no additional charge at checkout. The freight carrier will contact you to schedule a delivery appointment. Someone must be present to receive the shipment. Inspect all packaging before signing and photograph every side before opening. Note any damage on the delivery receipt before signing — do not sign a clean receipt for a visibly damaged shipment. Contact us immediately if damage is found.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eDue to size and weight, curbside delivery only. The carrier will not bring the enclosure inside. Arrange assistance for moving into your install location.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"xs-warranty\"\u003e\n      \u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n      \u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 15D Solo X is purpose-built for two Kicker Solo-X L7X 15\" drivers in an upfiring orientation on a flat cargo floor. Both square baffle cutouts are on the top face. The port exits the rear panel. Terminal cups are on the rear panel opposite the port. This enclosure requires a vehicle with a flat, unobstructed cargo floor area of at least 46.5\" wide and 35\" front-to-back. Measure your cargo floor before ordering.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 46.5\" W × 19.5\" H × 35\" D\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 10.0 ft³\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 30 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 140 sq in\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eDriver Orientation:\u003c\/strong\u003e Upfiring — top face\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Orientation:\u003c\/strong\u003e Rear-firing — rear panel\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTerminal Cups:\u003c\/strong\u003e Dual — rear panel, opposite port\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFront Baffle (Top Face):\u003c\/strong\u003e Triple-Layer MDF\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eRecommended Power:\u003c\/strong\u003e 1000–2000W RMS per driver\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 200+ lbs\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eWiring Configurations\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 2Ω Drivers — Parallel\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in parallel for a 1Ω final load. Requires an amplifier stable at 1Ω. Delivers maximum power transfer from high-current monoblocks rated at 1Ω.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 4Ω Drivers — Parallel\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in parallel for a 2Ω final load. Compatible with the widest range of high-output monoblock amplifiers. Most common wiring configuration for dual-driver competition builds.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 2Ω Drivers — Series\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in series for a 4Ω final load. Use when your amplifier is not stable at lower impedances. Output will be lower than parallel configurations at equivalent amplifier power.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003ePlan Before You Order\u003c\/h4\u003e\n        \u003cp\u003eSelect your driver impedance based on your amplifier's stable output impedance — not peak power rating. At 1000–2000W RMS per driver, plan your full electrical system before committing to amplifier selection. Contact us with your amplifier model and wiring plan for confirmation.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eFull-Size SUV Cargo Builds\u003c\/h4\u003e\n        \u003cp\u003eThe upfiring orientation is optimized for full-size SUVs with flat, unobstructed cargo floors — Tahoe, Suburban, Yukon, Expedition, Navigator, and similar platforms. The drivers pressurize the cargo area directly above, the port loads toward the rear gate. Verify cargo floor dimensions and clearance to the headliner before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eFull-Size Truck Bed Builds\u003c\/h4\u003e\n        \u003cp\u003eWith appropriate weatherproofing and bed liner protection, the upfiring configuration works in covered truck bed applications. The rear-exiting port loads toward the cab or tailgate depending on enclosure orientation. Contact us before ordering for truck bed application guidance.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eMaximum-Output Dedicated Builds\u003c\/h4\u003e\n        \u003cp\u003eTwo Solo-X L7X 15\" drivers in a correctly tuned 10.0 ft³ enclosure represents the highest single-enclosure output in the X Series lineup. This is a dedicated build — the vehicle is the enclosure space, and the enclosure is built accordingly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eDemo \u0026amp; Show Builds\u003c\/h4\u003e\n        \u003cp\u003eThe SUV-style upfiring configuration with acrylic inserts included makes this the most visually and acoustically impactful enclosure in the lineup. The drivers are visible from above, the acrylic identifies this as a purpose-built system, and the output backs up the visual at any demo event.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-cta\"\u003e\n    \u003ch2\u003eThe Top of the X Series. Two 15\" Drivers. Built in Tennessee.\u003c\/h2\u003e\n    \u003cp\u003eThe Proline X Pro KIK 15D Solo X is the largest, most powerful single-enclosure configuration in the X Series lineup. 10.0 ft³ net, 30 Hz tuning, 140 square inches of port area, two upfiring L7X 15\" cutouts, rear-exiting port, dual terminal cups. Langboard Elite MDF. Triple-layer top baffle. Extreme internal cross-bracing. V-groove and dado joinery. Hand-assembled and inspected in Tennessee. Acrylic inserts included. Freight shipping included. Backed by a 2-year warranty.\u003c\/p\u003e\n    \u003cp\u003eYou source the drivers. We handle the box. \u003cstrong\u003e$1,750.00. Freight included. 5–7 business day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 15\".\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":41100851740761,"sku":"Pro KIK 15D X","price":1750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofer-dualsubwoofer-enclosuresproline-x-1023143.jpg?v=1774078266"},{"product_id":"kicker-solo-x-10-subwoofer-box-professional-series-enclosure-for-compact-high-performance-bass","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 10\" Subwoofer","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .xs-hero { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; 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font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .xs-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  .xs-disclaimer { font-size: 0.85em; opacity: 0.7; font-style: italic; margin-top: 20px; }\n  @media (max-width: 768px) {\n    .xs-hero { padding: 40px 20px; }\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-variant-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"xs-wrap\"\u003e\n\n  \u003cdiv class=\"xs-hero\"\u003e\n    \u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 10 SX\u003c\/p\u003e\n    \u003cp class=\"xs-subtitle\"\u003eSingle 10\" Ported Enclosure | Built for the Kicker Solo-X L7X\u003c\/p\u003e\n    \u003cdiv class=\"xs-badges\"\u003e\n      \u003cspan class=\"xs-badge\"\u003e2.0 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e31 Hz Tuning\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eDual-Layer Baffle\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e32\" × 13.75\" × 18\"\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eThe Sweet Spot of the Lineup. Tuned Lower Than the Competition.\u003c\/h2\u003e\n    \u003cp\u003eThe Solo-X L7X 10\" sits in the most versatile position in the X Series lineup — more cone area and low-frequency displacement than the 8\", more install flexibility than the 12\". It is a driver that rewards a correctly engineered enclosure and gives up real performance in a box that approximates the spec.\u003c\/p\u003e\n    \u003cp\u003eMost generic 10\" ported enclosures are tuned between 35 and 38 Hz — a range optimized for output numbers rather than for any specific driver's Thiele-Small parameters. The Solo-X L7X 10\" calls for something different. The Pro KIK 10 SX is built to 2.0 cubic feet net, tuned to 31 Hz, with 30.6 square inches of port area — every variable derived from the L7X 10\"'s published T\/S parameters. That 31 Hz tuning is not a compromise. It is where this driver's low-end extension and output efficiency intersect correctly.\u003c\/p\u003e\n    \u003cp\u003eThis is an enclosure-only product. You source the driver — we handle the box. The square baffle cutout is machined specifically to the L7X 10\" platform geometry. This enclosure is not cross-compatible with round 10\" drivers.\u003c\/p\u003e\n    \u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 10\".\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eWhy 31 Hz — and Why It Matters\u003c\/h2\u003e\n    \u003cp\u003eTuning frequency is not a preference setting. It is a calculated output of the driver's free-air resonance, suspension compliance, and the enclosure's internal volume and port geometry. The Solo-X L7X 10\" T\/S parameters point to a lower tuning frequency than most generic 10\" ported designs deliver. Running this driver in a box tuned at 35–38 Hz produces peak output at frequencies above where the driver's motor is most efficient — you get a louder midband and less of the low-end extension the 10\" Solo-X is capable of producing.\u003c\/p\u003e\n    \u003cp\u003eAt 31 Hz, the Pro KIK 10 SX loads the driver correctly across its full operating range. The 30.6 square inches of port area keeps air velocity below the chuffing threshold at sustained high-power input. The result is clean, controlled output that extends lower than any generic 10\" ported box at this driver size — not because of a marketing claim, but because the enclosure was built to what this driver's published specs actually require.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e2.0 ft³ — Driver-Specific Volume\u003c\/h4\u003e\n        \u003cp\u003eThe 2.0 ft³ net internal volume is derived from the Solo-X L7X 10\"'s suspension compliance and Xmax — not from a universal 10\" ported template. It is the volume at which this driver operates in its linear range in a ported alignment tuned to 31 Hz.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e31 Hz — Lower Than Generic, Correct for This Driver\u003c\/h4\u003e\n        \u003cp\u003eMost 10\" ported boxes on the market are tuned 4–7 Hz higher than the Pro KIK 10 SX. That difference is audible — particularly in the 28–35 Hz range where the Solo-X 10\" has output capability that a higher-tuned enclosure cannot access. This enclosure does not leave that extension on the table.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e30.6 sq in Port Area\u003c\/h4\u003e\n        \u003cp\u003ePort area is sized for the displacement this driver generates at sustained high-power input. At 30.6 square inches, air velocity stays clean at competition power levels — no chuffing, no port noise, no compression artifacts at the tuning frequency where this driver operates hardest.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eThe Sweet Spot of the X Series\u003c\/h4\u003e\n        \u003cp\u003eThe 10\" configuration fits where the 8\" does not have enough cone area and the 12\" exceeds the available install space. At 32\" wide, 13.75\" tall, and 18\" deep, the Pro KIK 10 SX fits a wide range of dedicated trunk builds and midsize installs without custom fabrication.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eConstruction: The Same Standard as Every Proline X Enclosure\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 10 SX uses the same construction methodology as every enclosure in the Proline X lineup. Langboard Elite MDF. V-groove and dado joinery. Extensive internal bracing. In-house terminal cup. Hand-assembled in Tennessee. The variables between SKUs are dimensions, volume, and port geometry — the build quality is consistent across the line.\u003c\/p\u003e\n\n    \u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n    \u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. Generic descriptions like \"high-density\" or \"premium MDF\" carry no defined standard. Langboard Elite carries published mill data that is verifiable and consistent sheet to sheet. For a ported enclosure running a high-excursion motor at sustained power, that consistency matters.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; a ported enclosure at high power cycles pressure through every panel joint on every bass note\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; less flex means less panel resonance coloring the port output\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the vibration load of the L7X 10\" motor at excursion\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n    \u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. The dado creates a tongue-and-groove interlock that resists shear forces regardless of glue condition over time. For a ported enclosure tuned to 31 Hz, joint integrity is acoustic integrity — a leaking seam is a port you did not design, and at this tuning frequency it will show up in the low-end response immediately.\u003c\/p\u003e\n\n    \u003ch3\u003eExtensive Internal Bracing\u003c\/h3\u003e\n    \u003cp\u003eThe Pro KIK 10 SX is braced throughout the internal structure. At 2.0 ft³ net, the panel spans on this enclosure are larger than the single 8\" — bracing is placed to control resonance across those larger surfaces at the frequencies the L7X 10\" generates under load. The result is an enclosure that stays acoustically inert at sustained output — the bass you hear comes from the driver, not the box.\u003c\/p\u003e\n\n    \u003ch3\u003eDual-Layer Mounting Baffle\u003c\/h3\u003e\n    \u003cp\u003eThe mounting surface uses a dual-layer MDF baffle, bringing total front panel thickness to 1.5\". The L7X 10\" generates significant back-pressure at excursion against the baffle. The dual-layer construction keeps the driver seated, the gasket seal intact, and the baffle inert under sustained high-power input.\u003c\/p\u003e\n\n    \u003ch3\u003eIn-House Terminal Cup\u003c\/h3\u003e\n    \u003cp\u003eThe terminal cup is built in-house at our Tennessee facility. The recessed ABS\/Carbon Fiber Composite cup features stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. The recessed mount protects terminals from cargo contact. Copper ring terminals provide a corrosion-resistant connection that does not loosen under vibration over time.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n        \u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. The square baffle cutout is machined to direct-fit the Solo-X L7X 10\" mounting flange — no adapter, no modification required. The internal volume of every Pro KIK 10 SX is identical to spec.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n        \u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. No overseas manufacturing. No batch shortcuts. Each unit is built individually and checked for volume accuracy, joint integrity, and port clearance before leaving the floor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFinish \u0026amp; Options\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 10 SX is finished in Plush Black carpet and available in two configurations. Both ship assembled and ready to install. Lead time is 2–4 business days.\u003c\/p\u003e\n    \u003cdiv class=\"xs-variant-grid\"\u003e\n      \u003cdiv class=\"xs-variant\"\u003e\n        \u003ch4\u003eStandard — Carpet Only\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$499.99\u003c\/div\u003e\n        \u003cp\u003ePlush Black carpet finish. Recessed ABS\/Carbon Fiber Composite terminal cup. Pre-wired with 12g OFC speaker wire. Shipping included.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-variant featured\"\u003e\n        \u003ch4\u003eWith Front Acrylic Panel\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$569.99\u003c\/div\u003e\n        \u003cp\u003eEverything in Standard plus a laser-etched custom Proline X Hex and Flag acrylic graphics panel on the front baffle. Show-quality finish detail that identifies this as a purpose-built competition enclosure.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"xs-warranty\"\u003e\n      \u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n      \u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 10 SX is purpose-built for the Kicker Solo-X L7X 10\" in both available impedance configurations — the 1Ω DVC and the 2Ω DVC. The baffle cutout is machined to the L7X square cone geometry. This enclosure is not cross-compatible with round 10\" drivers — the square cutout is specific to the L7X platform.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 32\" W × 13.75\" H × 18\" D\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 2.0 ft³\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 31 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 30.6 sq in\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFront Baffle Thickness:\u003c\/strong\u003e 1.5\" Dual-Layer\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eRecommended Power:\u003c\/strong\u003e 500–1000W RMS\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 65 lbs\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eDedicated Trunk Builds\u003c\/h4\u003e\n        \u003cp\u003eAt 32\" wide, 13.75\" tall, and 18\" deep, the Pro KIK 10 SX fits most standard sedan and midsize SUV trunks without custom fabrication. The 10\" configuration is the most versatile in the lineup for trunk installs — wide enough to anchor the build, compact enough to leave usable cargo space.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eMidsize SUV Cargo Builds\u003c\/h4\u003e\n        \u003cp\u003eThe 13.75\" height clears most SUV cargo floor-to-ceiling constraints where a taller 12\" or 15\" enclosure would not fit. A correctly loaded Solo-X 10\" in this enclosure outperforms a larger driver in a compromised box in the same space.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHigh-Output Daily Driver\u003c\/h4\u003e\n        \u003cp\u003eThe 31 Hz tuning delivers low-end extension that a higher-tuned generic box cannot access. For daily use at real power levels, that difference is audible — particularly on material with content in the 28–35 Hz range where this enclosure is operating at its designed output point.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eSpace-Constrained Competition\u003c\/h4\u003e\n        \u003cp\u003eFor competitors building to a class or space limitation where the 12\" is too large, the Pro KIK 10 SX delivers Solo-X 10\" performance from an enclosure tuned to the driver's published specification — not a generic template.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-cta\"\u003e\n    \u003ch2\u003eBuilt to Spec. Tuned Lower. Built in Tennessee.\u003c\/h2\u003e\n    \u003cp\u003eThe Proline X Pro KIK 10 SX is not a generic 10\" ported box. It is built to 2.0 ft³ net, tuned to 31 Hz — lower than the market standard for this driver size, correct for the Solo-X L7X 10\"'s published Thiele-Small parameters. Langboard Elite MDF. Dual-layer baffle. Extensive internal bracing. V-groove and dado joinery. Hand-assembled and inspected in Tennessee before it ships. Backed by a 2-year warranty.\u003c\/p\u003e\n    \u003cp\u003eYou source the driver. We handle the box. \u003cstrong\u003eStandard $499.99 | With Acrylic Panel $569.99. Shipping included. 2–4 day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 10\".\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"None - Carpet Only","offer_id":43165405511769,"sku":"Pro KIK 10 SX-none","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Standard - Hex and Flag","offer_id":43165405544537,"sku":"Pro KIK 10 SX-hex","price":569.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofersubwoofer-enclosuresproline-x-9950209.jpg?v=1774479103"},{"product_id":"kicker-solo-x-8-subwoofer-box-professional-series-enclosure","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 8\" Subwoofer","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .xs-hero { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; color: white; }\n  .xs-hero .xs-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .xs-hero .xs-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .xs-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .xs-badge { background: rgba(245, 158, 11, 0.2); border: 1px solid #f59e0b; color: #fcd34d; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .xs-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .xs-section:nth-child(even) { background: #fffbeb; }\n  .xs-section h2 { color: #92400e; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #f59e0b; }\n  .xs-section h3 { color: #0f172a; 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border-left: 5px solid #f59e0b; border-radius: 0 6px 6px 0; padding: 20px 28px; margin: 28px 0; display: flex; align-items: center; gap: 20px; }\n  .xs-warranty-badge { background: #f59e0b; color: #0f172a; font-size: 1.1em; font-weight: 800; padding: 10px 18px; border-radius: 4px; white-space: nowrap; }\n  .xs-warranty p { color: #cbd5e1; font-size: 0.95em; margin: 0; line-height: 1.6; }\n  .xs-warranty strong { color: #ffffff; }\n  .xs-variant-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 24px 0; }\n  .xs-variant { background: #ffffff; border: 2px solid #e2e8f0; border-radius: 8px; padding: 24px; text-align: center; }\n  .xs-variant.featured { border-color: #f59e0b; }\n  .xs-variant h4 { color: #0f172a; font-size: 1.1em; font-weight: 700; margin: 0 0 8px 0; }\n  .xs-variant .price { font-size: 1.6em; font-weight: 800; color: #92400e; margin: 8px 0; }\n  .xs-variant p { font-size: 0.95em; color: #64748b; margin: 0; }\n  .xs-cta { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; color: white; }\n  .xs-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .xs-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  .xs-disclaimer { font-size: 0.85em; opacity: 0.7; font-style: italic; margin-top: 20px; }\n  @media (max-width: 768px) {\n    .xs-hero { padding: 40px 20px; }\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-variant-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"xs-wrap\"\u003e\n\u003cdiv class=\"xs-hero\"\u003e\n\u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 8 SX\u003c\/p\u003e\n\u003cp class=\"xs-subtitle\"\u003eSingle 8\" Ported Enclosure | Built for the Kicker Solo-X L7X\u003c\/p\u003e\n\u003cdiv class=\"xs-badges\"\u003e\n\u003cspan class=\"xs-badge\"\u003e0.88 ft³ Net\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003e39 Hz Tuning\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003eDual-Layer Baffle\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003e28\" × 10.5\" × 14.5\"\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eOne Driver. One Enclosure. One Spec.\u003c\/h2\u003e\n\u003cp\u003eThe Kicker Solo-X L7X 8\" is not a typical 8\" subwoofer. It runs a 2.5\" voice coil, a high-mass ferrite motor with 225 oz. of magnet weight, and 24mm of one-way Xmax — excursion figures that compete directly with mid-size drivers. That motor structure demands a precise acoustic load to operate correctly. Run it in the wrong box and you are leaving most of what you paid for on the table.\u003c\/p\u003e\n\u003cp\u003eKicker's own engineering specification for the L7X 8\" calls for 0.88 cubic feet net, vented, tuned to 39 Hz. The Proline X Pro KIK 8 SX is built to that number exactly — not approximately, not close enough. The port geometry, the internal volume, and the external footprint are all consequences of that single target spec.\u003c\/p\u003e\n\u003cp\u003eThis is an enclosure-only product. You source the driver — we handle the box. The square baffle cutout is machined specifically to the L7X platform geometry. This enclosure is not cross-compatible with round 8\" drivers.\u003c\/p\u003e\n\u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 8\".\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eWhy This Enclosure for the Solo-X L7X 8\"\u003c\/h2\u003e\n\u003cp\u003eThe L7X 8\" is a high-excursion competition driver in a compact frame. Its motor generates significant back-pressure during sustained output, and its suspension is tuned for a specific range of vented airspace. Outside of that range, the driver over-excurses at low frequencies, efficiency drops, and you lose the extension the motor is built to produce. Inside of it, the driver operates in its linear range and delivers what the motor is capable of.\u003c\/p\u003e\n\u003cp\u003eAt 0.88 ft³ net and 39 Hz tuning, the Pro KIK 8 SX keeps the Solo-X L7X 8\" in that linear operating range. The port is sized so air velocity stays clean under sustained high-power output — no chuffing, no port noise, no compression artifacts at the tuning frequency. The 32.25\" internal port length is not an approximation; it is the calculated length required to hit 39 Hz with an 18 sq in port area in this internal volume.\u003c\/p\u003e\n\u003cdiv class=\"xs-grid\"\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eDriver-Specific Volume\u003c\/h4\u003e\n\u003cp\u003eThe 0.88 ft³ net internal volume matches \u003ca href=\"https:\/\/audiointensity.com\/collections\/enclosures-for-kicker-subwoofers\" target=\"_blank\" rel=\"noopener\"\u003eKicker's published enclosure\u003c\/a\u003e recommendation for the L7X 8\" exactly. Not a universal 8\" spec. Not a round number. The volume that Kicker's engineering team calculated for this driver's suspension compliance and Xmax.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003e39 Hz Port Tuning\u003c\/h4\u003e\n\u003cp\u003eTuning at 39 Hz maximizes output through the 35–50 Hz range where the L7X 8\" operates most efficiently. The port contributes maximum acoustic output above tuning, while the driver's suspension provides control below it. The result is a flat, high-output response through the driver's usable pass-band.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003ePort Velocity Control\u003c\/h4\u003e\n\u003cp\u003eThe 2\" × 9\" port opening with 32.25\" of internal length and 18 sq in of area is calculated to keep air velocity below the chuffing threshold at the L7X 8\"'s rated 800W RMS input — clean port output at competition power levels, not just at moderate listening volumes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eWhat the Correct Box Actually Changes\u003c\/h4\u003e\n\u003cp\u003eIn the right enclosure, the L7X 8\" loads cleanly from the low 30s through its full output band. In an undersize or incorrectly tuned box, excursion spikes below port tuning, output compresses, and the driver's motor works harder for less result. The enclosure is not a passive container — it is part of the acoustic system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eConstruction: The Same Standard as Every Proline X Enclosure\u003c\/h2\u003e\n\u003cp\u003eThe Pro KIK 8 SX uses the same construction methodology as every enclosure in the Proline X lineup. Langboard Elite MDF. V-groove and dado joinery. Extensive internal bracing. In-house terminal cup. Hand-assembled in Tennessee. The variables between SKUs are dimensions, volume, and port geometry — the build quality is consistent across the line.\u003c\/p\u003e\n\u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n\u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. Generic descriptions like \"high-density\" or \"premium MDF\" carry no defined standard. Langboard Elite carries published mill data that is verifiable and consistent sheet to sheet. For a ported enclosure running a high-excursion motor at competition power levels, that consistency matters.\u003c\/p\u003e\n\u003cdiv class=\"xs-highlight\"\u003e\n\u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; a ported enclosure at high power cycles pressure through every panel joint on every bass note\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; less flex means less panel resonance coloring the port output\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the vibration load of a 225 oz. motor at excursion\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n\u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. The dado creates a tongue-and-groove interlock that resists shear forces regardless of glue condition over time. For a ported enclosure, joint integrity is acoustic integrity — a leaking seam is a port you did not design, and it will show up in the response.\u003c\/p\u003e\n\u003ch3\u003eExtensive Internal Bracing\u003c\/h3\u003e\n\u003cp\u003eThe Pro KIK 8 SX is braced throughout the internal structure — not just at the baffle. A 225 oz. motor cycling at the driver's resonant frequency transmits force through every panel in the enclosure on every bass transient. Bracing controls panel resonance at the structure level, not the material level. The result is an enclosure that stays acoustically inert at sustained high power — the bass you hear comes from the driver, not the box.\u003c\/p\u003e\n\u003ch3\u003eDual-Layer Mounting Baffle\u003c\/h3\u003e\n\u003cp\u003eThe mounting surface uses a dual-layer MDF baffle, bringing total front panel thickness to 1.5\". At high excursion, the L7X 8\" motor mass cycles against the baffle at the driver's resonant frequency. A single-layer front panel flexes under sustained input from a motor this size. The dual-layer construction eliminates that flex — the driver stays seated, the gasket seal holds, and the baffle does not contribute resonance to the output.\u003c\/p\u003e\n\u003ch3\u003eIn-House Terminal Cup\u003c\/h3\u003e\n\u003cp\u003eThe terminal cup is built in-house at our Tennessee facility. The recessed ABS\/Carbon Fiber Composite cup features stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. The recessed mount protects terminals from cargo contact. Copper ring terminals provide a corrosion-resistant connection that does not loosen under vibration over time.\u003c\/p\u003e\n\u003cdiv class=\"xs-grid\"\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n\u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. Consistent geometry, no hand-cut variance, no gaps at the joints. The internal volume of every Pro KIK 8 SX is identical to spec — not approximate to spec. That precision is what makes the 39 Hz tuning accurate rather than nominal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n\u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. No overseas manufacturing. No batch shortcuts. Each unit is built individually and checked for volume accuracy, joint integrity, and port clearance before leaving the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eFinish \u0026amp; Options\u003c\/h2\u003e\n\u003cp\u003eThe Pro KIK 8 SX is finished in Plush Black carpet and available in two configurations. Both ship assembled and ready to install. Lead time is 2–4 business days.\u003c\/p\u003e\n\u003cdiv class=\"xs-variant-grid\"\u003e\n\u003cdiv class=\"xs-variant\"\u003e\n\u003ch4\u003eStandard — Carpet Only\u003c\/h4\u003e\n\u003cdiv class=\"price\"\u003e$329.99\u003c\/div\u003e\n\u003cp\u003ePlush Black carpet finish. Recessed ABS\/Carbon Fiber Composite terminal cup. Pre-wired with 12g OFC speaker wire. Shipping included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-variant featured\"\u003e\n\u003ch4\u003eWith Front Acrylic Panel\u003c\/h4\u003e\n\u003cdiv class=\"price\"\u003eSee variant selector\u003c\/div\u003e\n\u003cp\u003eEverything in Standard plus a laser-etched custom Proline X acrylic graphics panel on the front baffle. Show-quality finish detail that identifies this as a purpose-built competition enclosure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-warranty\"\u003e\n\u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n\u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n\u003cp\u003eThe Pro KIK 8 SX is purpose-built for the Kicker Solo-X L7X 8\" in both available impedance configurations — the 1Ω DVC (49L7X81) and the 2Ω DVC (49L7X82). The baffle cutout is machined to the L7X square cone geometry. This enclosure is not cross-compatible with round 8\" drivers — the square cutout is specific to the L7X platform.\u003c\/p\u003e\n\u003cdiv class=\"xs-highlight\"\u003e\n\u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 28\" W × 10.5\" H × 14.5\" D\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 0.88 ft³\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 39 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePort Opening:\u003c\/strong\u003e 2\" × 9\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePort Internal Length:\u003c\/strong\u003e 32.25\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 18 sq in\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFront Baffle Thickness:\u003c\/strong\u003e 1.5\" Dual-Layer\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Power:\u003c\/strong\u003e 400–800W RMS\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 45 lbs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n\u003cdiv class=\"xs-grid\"\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eCompact \u0026amp; Midsize Trunk Builds\u003c\/h4\u003e\n\u003cp\u003eThe 28\" × 10.5\" × 14.5\" footprint fits in trunk corners and dedicated install spaces in compact and midsize vehicles. At 45 lbs it ships UPS Ground — no freight required. Verify width clearance first; 28\" is the primary constraint in most trunk applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eHatchback \u0026amp; Cargo Floor Builds\u003c\/h4\u003e\n\u003cp\u003eThe 10.5\" height and 14.5\" depth work well in hatchback cargo areas where vertical space is limited but floor depth is available. A clean, low-profile install that does not sacrifice the L7X 8\"'s acoustic load requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eSpace-Constrained Competition\u003c\/h4\u003e\n\u003cp\u003eFor competitors building to a vehicle class or space limitation, the Pro KIK 8 SX delivers L7X performance from the smallest correctly tuned enclosure this driver's published specifications allow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eDaily Driver SPL\u003c\/h4\u003e\n\u003cp\u003eThe L7X 8\" in a correctly tuned ported enclosure produces output that competes with larger format daily drivers. The Pro KIK 8 SX gives you that performance in a package that fits where an 8\" is the only practical size choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-cta\"\u003e\n\u003ch2\u003eBuilt to Spec. Built in Tennessee.\u003c\/h2\u003e\n\u003cp\u003eThe Proline X Pro KIK 8 SX is not a universal 8\" ported box. It is a single-driver-specific enclosure built to Kicker's published engineering specification for the L7X 8\". Langboard Elite MDF. Dual-layer baffle. Extensive internal bracing. V-groove and dado joinery. In-house terminal cup. Hand-assembled and inspected in Tennessee before it ships. Backed by a 2-year warranty.\u003c\/p\u003e\n\u003cp\u003eYou source the driver. We handle the box. \u003cstrong\u003eStarting at $329.99. Shipping included. 2–4 day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 8\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"None - Carpet Only","offer_id":43139267559513,"sku":"Pro KIK 8 SX | No Inserts","price":329.99,"currency_code":"USD","in_stock":true},{"title":"Standard - Hex and Flag","offer_id":43139267592281,"sku":"Pro KIK 8 SX | Hex","price":369.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofersubwoofer-enclosuresproline-x-9950209.jpg?v=1774479103"},{"product_id":"proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofer-dual","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 8\" Subwoofer | Dual","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; 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padding: 60px 40px; text-align: center; color: white; }\n  .xs-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .xs-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  .xs-disclaimer { font-size: 0.85em; opacity: 0.7; font-style: italic; margin-top: 20px; }\n  @media (max-width: 768px) {\n    .xs-hero { padding: 40px 20px; }\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-variant-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"xs-wrap\"\u003e\n\n  \u003cdiv class=\"xs-hero\"\u003e\n    \u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 8D Solo X\u003c\/p\u003e\n    \u003cp class=\"xs-subtitle\"\u003eDual 8\" Ported Enclosure | Built for Two Kicker Solo-X L7X Drivers\u003c\/p\u003e\n    \u003cdiv class=\"xs-badges\"\u003e\n      \u003cspan class=\"xs-badge\"\u003e1.75 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e38 Hz Tuning\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eTriple-Layer Baffle\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e34\" × 12\" × 18.25\"\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eTwo Drivers. One Spec. Recalculated From the Ground Up.\u003c\/h2\u003e\n    \u003cp\u003eRunning two Solo-X L7X 8\" drivers in the same enclosure is not a matter of doubling a single-driver box. Combined cone displacement, combined excursion load, combined port velocity — every acoustic variable scales with driver count and has to be recalculated independently. The X Series dual 8\" does that work.\u003c\/p\u003e\n    \u003cp\u003eThe result is 1.75 cubic feet net internal volume tuned to 38 Hz with 36 square inches of port area — all derived from the combined Thiele-Small parameters of two Solo-X L7X 8\" drivers running together. Internal volume is calculated after accounting for port displacement, triple-layer baffle thickness, and bracing material. Not before.\u003c\/p\u003e\n    \u003cp\u003eThis is an enclosure-only product. You source the drivers — we handle the box. The square baffle cutouts are machined specifically to the L7X platform geometry. This enclosure is not cross-compatible with round 8\" drivers.\u003c\/p\u003e\n    \u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 8\".\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eWhy the Dual 8\" — And Why This Enclosure\u003c\/h2\u003e\n    \u003cp\u003eThe dual 8\" X Series runs at 12\" tall. Most dual-driver enclosures in this output class run 14\" to 16\" tall. That 2–4\" difference is the reason to choose this configuration when height is the limiting dimension — behind-seat truck installs, shallow trunk builds, and low-profile dedicated audio builds where a taller enclosure is not an option. Two Solo-X 8\" drivers in a correctly tuned 12\"-tall enclosure deliver more combined cone area than a single 10\" while keeping the profile lower than any dual-10\" or dual-12\" alternative.\u003c\/p\u003e\n    \u003cp\u003eThe port area scales directly with the driver count. At 36 square inches — double the single 8\" port area — the port handles the air volume two Solo-X 8\" drivers generate at sustained high-power output without chuffing. The 38 Hz tuning places the enclosure's peak output in the low-frequency range where two 8\" motors working together have the most to contribute.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e1.75 ft³ — Dual-Driver Specific Volume\u003c\/h4\u003e\n        \u003cp\u003eNot 2 × 0.88. The combined T\/S parameters of two L7X 8\" drivers in a shared enclosure produce a different optimal volume calculation than two independent single boxes. 1.75 ft³ net is where two drivers in this configuration operate in their linear range together.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e38 Hz Tuning\u003c\/h4\u003e\n        \u003cp\u003eOne Hz lower than the single 8\" configuration — a deliberate adjustment for the combined excursion load of two drivers. Two motors working together shift the optimal tuning point slightly downward, extracting more usable low-end output from the combined cone area.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e36 sq in Port Area\u003c\/h4\u003e\n        \u003cp\u003ePort area scales with the combined displacement of both drivers. At 36 square inches, air velocity stays below the chuffing threshold at the combined rated input range of two L7X 8\" drivers — clean port output under sustained dual-driver load at competition power levels.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e12\" Height — The Competitive Advantage\u003c\/h4\u003e\n        \u003cp\u003eThe standout dimension on this enclosure is the 12\" height. It fits where a dual-10\" or dual-12\" cannot — behind-seat truck installs and shallow trunk builds where vertical clearance is the binding constraint. Maximum dual-driver output, minimum height profile.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eConstruction: Scaled Up for Two Drivers\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 8D uses the same construction methodology as every Proline X enclosure — Langboard Elite MDF, V-groove and dado joinery, extensive internal bracing, in-house terminal cup, hand-assembled in Tennessee. Two drivers running together generate twice the pressure load on every panel joint and twice the motor mass cycling against the front baffle. The construction specs reflect that.\u003c\/p\u003e\n\n    \u003ch3\u003eTriple-Layer Mounting Baffle — 2.25\"\u003c\/h3\u003e\n    \u003cp\u003eThe dual 8\" runs a triple-layer front baffle at 2.25\" total thickness — a full 0.75\" more than the single 8\" configuration. Two L7X 8\" motor assemblies cycling against the front panel at high excursion generate significantly more combined force than one. A dual-layer baffle is the correct spec for a single high-excursion motor. Two motors require the added mass and rigidity of a third layer. Both drivers stay seated, both gasket seals hold, and the baffle contributes nothing to the acoustic output.\u003c\/p\u003e\n\n    \u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n    \u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. For a ported enclosure running two high-excursion motors at competition power levels, panel consistency sheet to sheet is not a cosmetic concern — it is a structural one.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; two drivers at high power double the pressure cycling through every panel joint on every bass note\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; critical when two motors are generating combined excursion force against every panel simultaneously\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the combined vibration load of two 225 oz. motors at excursion\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n    \u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. The dado creates a tongue-and-groove interlock that resists shear forces regardless of glue condition over time. In a dual-driver ported enclosure, every joint is under twice the pressure load of a single-driver build on every bass transient. A leaking seam is a port you did not design — and with two drivers pressurizing the enclosure simultaneously, it will show up immediately.\u003c\/p\u003e\n\n    \u003ch3\u003eExtensive Internal Bracing\u003c\/h3\u003e\n    \u003cp\u003eThe Pro KIK 8D is braced throughout the internal structure. Two 225 oz. motors cycling at their resonant frequency transmit force through every panel in the enclosure simultaneously on every bass transient. Bracing controls panel resonance at the structure level — the result is an enclosure that stays acoustically inert at sustained dual-driver output. The bass you hear comes from the drivers, not the box.\u003c\/p\u003e\n\n    \u003ch3\u003eIn-House Terminal Cups\u003c\/h3\u003e\n    \u003cp\u003eTerminal cups are built in-house at our Tennessee facility. The recessed ABS\/Carbon Fiber Composite cups feature stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. Copper ring terminals provide a corrosion-resistant connection that does not loosen under vibration over time.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n        \u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. Both square baffle cutouts are machined to direct-fit the Solo-X L7X 8\" mounting flanges — no adapters, no modification required. The internal volume of every Pro KIK 8D is identical to spec.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n        \u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. No overseas manufacturing. No batch shortcuts. Each unit is built individually and checked for volume accuracy, joint integrity, and port clearance before leaving the floor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFinish \u0026amp; Options\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 8D is finished in Plush Black carpet and available in two configurations. Both ship assembled and ready to install. Lead time is 2–4 business days.\u003c\/p\u003e\n    \u003cdiv class=\"xs-variant-grid\"\u003e\n      \u003cdiv class=\"xs-variant\"\u003e\n        \u003ch4\u003eStandard — Carpet Only\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$499.99\u003c\/div\u003e\n        \u003cp\u003ePlush Black carpet finish. Recessed ABS\/Carbon Fiber Composite terminal cups. Pre-wired with 12g OFC speaker wire. Shipping included.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-variant featured\"\u003e\n        \u003ch4\u003eWith Front Acrylic Panel\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$549.99\u003c\/div\u003e\n        \u003cp\u003eEverything in Standard plus laser-etched custom Proline X Hex and Flag acrylic graphics panel on the front baffle. Show-quality finish detail that identifies this as a purpose-built competition enclosure.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"xs-warranty\"\u003e\n      \u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n      \u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 8D is purpose-built for two Kicker Solo-X L7X 8\" drivers. Both square baffle cutouts are machined to the L7X platform geometry. This enclosure is not cross-compatible with round 8\" drivers. Plan your amplifier selection around your final wiring impedance before ordering — two drivers give you multiple wiring options that produce different final loads.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 34\" W × 12\" H × 18.25\" D\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 1.75 ft³\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 38 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 36 sq in\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFront Baffle Thickness:\u003c\/strong\u003e 2.25\" Triple-Layer\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 65+ lbs\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eWiring Configurations\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 2Ω Drivers — Parallel\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in parallel for a 1Ω final load. Requires an amplifier stable at 1Ω. Delivers maximum power from amplifiers rated at 1Ω.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 4Ω Drivers — Parallel\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in parallel for a 2Ω final load. The most common wiring scenario for dual-driver builds — compatible with the widest range of monoblock amplifiers.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 2Ω Drivers — Series\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in series for a 4Ω final load. Useful when your amplifier is not stable at lower impedances. Output will be lower than parallel configurations at the same amplifier.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eConfirm Before You Order\u003c\/h4\u003e\n        \u003cp\u003eSelect your driver impedance based on your amplifier's stable output impedance — not its peak power rating. Contact us with your amplifier model and we will confirm the correct wiring plan before purchase.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eBehind-Seat Truck Installs\u003c\/h4\u003e\n        \u003cp\u003eThe 12\" height is the reason this configuration exists. It clears behind-seat floor-to-ceiling clearance in extended-cab and crew-cab trucks where a dual-10\" or dual-12\" at 14–16\" tall will not fit. Verify your specific cab clearance — 12\" is the constraint to check, not width.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eShallow Trunk Builds\u003c\/h4\u003e\n        \u003cp\u003eAt 18.25\" deep and 12\" tall, the Pro KIK 8D fits in shallow trunk builds where larger dual-driver configurations cannot go. The 34\" width covers most sedan trunk openings — measure before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHigh-Output Daily Driver\u003c\/h4\u003e\n        \u003cp\u003eTwo correctly loaded Solo-X 8\" drivers produce output that competes with single larger-format drivers in a significantly lower-profile enclosure. The dual 8\" is the configuration for buyers who need maximum output without building tall.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eCompetition Builds\u003c\/h4\u003e\n        \u003cp\u003eFor competitors working within a height or class constraint, the Pro KIK 8D delivers dual-driver Solo-X performance from the smallest correctly tuned dual-8\" enclosure these drivers' specifications allow.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-cta\"\u003e\n    \u003ch2\u003eTwo Drivers. Built to Spec. Built in Tennessee.\u003c\/h2\u003e\n    \u003cp\u003eThe Proline X Pro KIK 8D is not two single boxes joined together. It is a dual-driver-specific enclosure recalculated from the ground up for two Solo-X L7X 8\" drivers. Langboard Elite MDF. Triple-layer baffle. Extensive internal bracing. V-groove and dado joinery. Hand-assembled and inspected in Tennessee before it ships. Backed by a 2-year warranty.\u003c\/p\u003e\n    \u003cp\u003eYou source the drivers. We handle the box. \u003cstrong\u003eStandard $499.99 | With Acrylic Panel $549.99. Shipping included. 2–4 day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 8\".\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"None - Carpet Only","offer_id":43165552214105,"sku":"Pro KIK 8D SOLO X - None","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Hex and Flag","offer_id":43165552279641,"sku":"Pro KIK 8D SOLO X - Hex","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofer-dualsubwoofer-enclosuresproline-x-5634581.jpg?v=1774535928"},{"product_id":"proline-x-enclosure-x-series-fits-kicker-solo-x-10-subwoofer-dual","title":"Proline X Enclosure | X Series | Fits Kicker Solo X 10\" Subwoofer | Dual","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; 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border-left: 5px solid #f59e0b; border-radius: 0 6px 6px 0; padding: 20px 28px; margin: 28px 0; display: flex; align-items: center; gap: 20px; }\n  .xs-warranty-badge { background: #f59e0b; color: #0f172a; font-size: 1.1em; font-weight: 800; padding: 10px 18px; border-radius: 4px; white-space: nowrap; }\n  .xs-warranty p { color: #cbd5e1; font-size: 0.95em; margin: 0; line-height: 1.6; }\n  .xs-warranty strong { color: #ffffff; }\n  .xs-variant-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 24px 0; }\n  .xs-variant { background: #ffffff; border: 2px solid #e2e8f0; border-radius: 8px; padding: 24px; text-align: center; }\n  .xs-variant.featured { border-color: #f59e0b; }\n  .xs-variant h4 { color: #0f172a; font-size: 1.1em; font-weight: 700; margin: 0 0 8px 0; }\n  .xs-variant .price { font-size: 1.6em; font-weight: 800; color: #92400e; margin: 8px 0; }\n  .xs-variant p { font-size: 0.95em; color: #64748b; margin: 0; }\n  .xs-cta { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; color: white; }\n  .xs-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .xs-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  .xs-disclaimer { font-size: 0.85em; opacity: 0.7; font-style: italic; margin-top: 20px; }\n  @media (max-width: 768px) {\n    .xs-hero { padding: 40px 20px; }\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-variant-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"xs-wrap\"\u003e\n\u003cdiv class=\"xs-hero\"\u003e\n\u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 10D Solo X\u003c\/p\u003e\n\u003cp class=\"xs-subtitle\"\u003eDual 10\" Ported Enclosure | Built for Two Kicker Solo-X L7X Drivers\u003c\/p\u003e\n\u003cdiv class=\"xs-badges\"\u003e\n\u003cspan class=\"xs-badge\"\u003e4.0 ft³ Net\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003e31 Hz Tuning\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003eTriple-Layer Baffle\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003e38\" × 13.75\" × 22.75\"\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003e61.25 sq in Port\u003c\/span\u003e \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eTwo Drivers. 31 Hz. Recalculated From the Ground Up.\u003c\/h2\u003e\n\u003cp\u003eThe dual 10\" X Series carries the same 31 Hz tuning as the single 10\" — arrived at independently for the combined Thiele-Small parameters of two Solo-X L7X 10\" drivers in a shared enclosure. Running two L7X 10\" drivers together is not a matter of doubling the single-driver box. Combined displacement, combined excursion load, combined port velocity — every acoustic variable is recalculated. The result is 4.0 cubic feet net internal volume with 61.25 square inches of port area at 31 Hz.\u003c\/p\u003e\n\u003cp\u003eThe 13.75\" height is the defining dimension for this configuration. It matches the single 10\" height exactly — making the dual 10\" the correct step up when the single 10\" does not have enough cone area for your output goals but vertical clearance is still constrained. More output, same height profile, independently engineered to the correct spec for two drivers.\u003c\/p\u003e\n\u003cp\u003eThis is an enclosure-only product. You source the drivers — we handle the box. The square baffle cutouts are machined specifically to the L7X 10\" platform geometry. This enclosure is not cross-compatible with round 10\" drivers.\u003c\/p\u003e\n\u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 10\".\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eWhy the Dual 10\" — And Why This Enclosure\u003c\/h2\u003e\n\u003cp\u003eThe dual 10\" sits at a specific point in the X Series lineup. More combined cone area than two 8\" drivers in a taller package, more low-end extension than a single 12\" tuned higher, and at 13.75\" tall it fits installations where the dual 12\" at greater height is not practical. The 31 Hz tuning is not borrowed from a generic dual-10\" template — it is the calculated correct tuning frequency for two L7X 10\" drivers' combined T\/S parameters in this shared enclosure volume.\u003c\/p\u003e\n\u003cp\u003eAt 61.25 square inches of port area, the port handles the combined displacement of two L7X 10\" drivers at sustained high-power input without compression or chuffing. The 22.75\" depth provides the internal geometry needed to achieve 4.0 ft³ net after accounting for the triple-layer baffle, bracing, and port displacement.\u003c\/p\u003e\n\u003cdiv class=\"xs-grid\"\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003e4.0 ft³ — Dual-Driver Specific Volume\u003c\/h4\u003e\n\u003cp\u003eNot 2 × 2.0. The combined T\/S parameters of two L7X 10\" drivers in a shared enclosure produce a different optimal volume than two independent single boxes. 4.0 ft³ net is the correct airspace for two drivers in this shared vented alignment at 31 Hz, calculated after accounting for all internal displacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003e31 Hz — Correct for This Driver, at This Count\u003c\/h4\u003e\n\u003cp\u003eThe same tuning target as the single 10\", arrived at by independent calculation for two drivers. Generic dual-10\" enclosures are typically tuned higher to maximize output numbers. This enclosure is tuned where the L7X 10\"'s T\/S parameters point — lower extension, correct acoustic load, more usable output across the full pass-band.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003e61.25 sq in Port Area\u003c\/h4\u003e\n\u003cp\u003eScaled to the combined displacement of two L7X 10\" drivers at sustained high-power input. At 61.25 square inches, port velocity stays clean at competition power levels — no compression artifacts, no chuffing, clean output at the 31 Hz tuning point where two 10\" motors are working hardest.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003e13.75\" Height — Same Profile as the Single 10\"\u003c\/h4\u003e\n\u003cp\u003eThe dual 10\" matches the single 10\" height exactly. If vertical clearance is the binding constraint in your install and the single 10\" does not deliver enough output, the dual 10\" is the correct next step — same height, more cone area, more output, independently tuned for two drivers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eConstruction: Scaled for Two Drivers\u003c\/h2\u003e\n\u003cp\u003eThe Pro KIK 10D uses the same construction methodology as every Proline X enclosure — Langboard Elite MDF, V-groove and dado joinery, extensive internal bracing, in-house terminal cups, hand-assembled in Tennessee. Two drivers running together generate twice the pressure load on every panel joint and twice the motor mass cycling against the front baffle. The construction specs reflect that.\u003c\/p\u003e\n\u003ch3\u003eTriple-Layer Mounting Baffle — 2.25\"\u003c\/h3\u003e\n\u003cp\u003eThe dual 10\" runs a triple-layer front baffle at 2.25\" total thickness. Two L7X 10\" motor assemblies cycling against the front panel at high excursion generate more combined force than a dual-layer baffle is designed to handle at competition power levels. The triple-layer construction keeps both drivers seated, both gasket seals intact, and the baffle acoustically inert under sustained high-power dual-driver input.\u003c\/p\u003e\n\u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n\u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. At 4.0 ft³ with 61.25 square inches of port area, the panel spans on this enclosure are larger than the smaller dual configurations. Panel consistency sheet to sheet at this enclosure size is a structural requirement, not a preference.\u003c\/p\u003e\n\u003cdiv class=\"xs-highlight\"\u003e\n\u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; two drivers at high power double the pressure cycling through every panel joint on every bass note\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; at 4.0 ft³ the unsupported panel spans require consistent stiffness across every sheet\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the combined vibration load of two L7X 10\" motors at excursion\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n\u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. In a dual-driver ported enclosure tuned to 31 Hz, every joint is under twice the pressure load of a single-driver build on every bass transient. The dado interlock resists shear forces regardless of glue condition over time. A leaking seam is a port you did not design — at this volume and tuning frequency it will show up in the response immediately.\u003c\/p\u003e\n\u003ch3\u003eExtensive Internal Bracing\u003c\/h3\u003e\n\u003cp\u003eThe Pro KIK 10D is braced throughout the internal structure. Two motors cycling at their resonant frequency transmit force through every panel simultaneously on every bass transient. At 4.0 ft³ the panel spans are larger than the dual 8\" configuration — bracing is placed to control resonance across those larger surfaces at the 31 Hz tuning point. The bass comes from the drivers, not the box.\u003c\/p\u003e\n\u003ch3\u003eIn-House Terminal Cups\u003c\/h3\u003e\n\u003cp\u003eBoth terminal cups are built in-house at our Tennessee facility. The recessed ABS\/Carbon Fiber Composite cups feature stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. Copper ring terminals provide a corrosion-resistant connection that does not loosen under vibration over time.\u003c\/p\u003e\n\u003cdiv class=\"xs-grid\"\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n\u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. Both square baffle cutouts are machined to direct-fit the Solo-X L7X 10\" mounting flanges — no adapters, no modification required. Internal volume of every Pro KIK 10D is identical to spec.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n\u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. No overseas manufacturing. Each unit is built individually and checked for volume accuracy, joint integrity, and port clearance before leaving the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eFinish \u0026amp; Options\u003c\/h2\u003e\n\u003cp\u003eThe Pro KIK 10D is finished in Plush Black carpet and available in two configurations. Both ship assembled and ready to install. Lead time is 2–4 business days.\u003c\/p\u003e\n\u003cdiv class=\"xs-variant-grid\"\u003e\n\u003cdiv class=\"xs-variant\"\u003e\n\u003ch4\u003eStandard — Carpet Only\u003c\/h4\u003e\n\u003cdiv class=\"price\"\u003e$749.99\u003c\/div\u003e\n\u003cp\u003ePlush Black carpet finish. Recessed ABS\/Carbon Fiber Composite terminal cups. Pre-wired with 12g OFC speaker wire. Shipping included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-variant featured\"\u003e\n\u003ch4\u003eWith Front Acrylic Panel\u003c\/h4\u003e\n\u003cdiv class=\"price\"\u003e$799.99\u003c\/div\u003e\n\u003cp\u003eEverything in Standard plus a laser-etched custom Proline X Hex and Flag acrylic graphics panel on the front baffle. Show-quality finish for dedicated and competition builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-warranty\"\u003e\n\u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n\u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-section\"\u003e\n\u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n\u003cp\u003eThe Pro KIK 10D is purpose-built for two Kicker Solo-X L7X 10\" drivers in both available impedance configurations. Both square baffle cutouts are machined to the L7X 10\" platform geometry. This enclosure is not cross-compatible with round 10\" drivers. Plan your amplifier selection around your final wiring impedance before ordering.\u003c\/p\u003e\n\u003cdiv class=\"xs-highlight\"\u003e\n\u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 38\" W × 13.75\" H × 22.75\" D\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 4.0 ft³\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 31 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 61.25 sq in\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFront Baffle Thickness:\u003c\/strong\u003e 2.25\" Triple-Layer\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Power:\u003c\/strong\u003e 1000–2500W RMS per driver\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 80–90 lbs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWiring Configurations\u003c\/h3\u003e\n\u003cdiv class=\"xs-grid\"\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eTwo Single 2Ω Drivers — Parallel\u003c\/h4\u003e\n\u003cp\u003eWire both drivers in parallel for a 1Ω final load. Requires an amplifier stable at 1Ω. Maximum power transfer from high-current monoblocks rated at 1Ω.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eTwo Single 4Ω Drivers — Parallel\u003c\/h4\u003e\n\u003cp\u003eWire both drivers in parallel for a 2Ω final load. Most common wiring configuration — compatible with the widest range of monoblock amplifiers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eTwo Single 2Ω Drivers — Series\u003c\/h4\u003e\n\u003cp\u003eWire both drivers in series for a 4Ω final load. Use when your amplifier is not stable at lower impedances. Output will be lower than parallel configurations at equivalent amplifier power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eConfirm Before You Order\u003c\/h4\u003e\n\u003cp\u003eSelect driver impedance based on your amplifier's stable output impedance — not peak power rating. Contact us with your amplifier model and wiring plan and we will confirm the correct configuration before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n\u003cdiv class=\"xs-grid\"\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eDedicated Trunk Builds — Height-Constrained\u003c\/h4\u003e\n\u003cp\u003eAt 13.75\" tall the Pro KIK 10D fits installations where the dual 12\" at greater height will not clear. It covers the same sedan and midsize trunk applications as the single 10\" with significantly more combined cone area and output potential.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eMidsize SUV Cargo Builds\u003c\/h4\u003e\n\u003cp\u003eThe 13.75\" height clears most midsize SUV cargo floor-to-ceiling constraints. At 38\" wide verify cargo floor width before ordering — this is wider than the single 10\" and may not clear all midsize platforms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eHigh-Output Daily Driver\u003c\/h4\u003e\n\u003cp\u003eTwo L7X 10\" drivers at 31 Hz in a correctly tuned shared enclosure produce the kind of combined low-end extension and output that a single larger driver in a higher-tuned box cannot match at equivalent power input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-card\"\u003e\n\u003ch4\u003eCompetition Builds\u003c\/h4\u003e\n\u003cp\u003eFor competitors working within a height or class constraint, the Pro KIK 10D delivers dual-driver Solo-X 10\" performance from the smallest correctly tuned dual-10\" enclosure these drivers' T\/S parameters allow at this height.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xs-cta\"\u003e\n\u003ch2\u003eTwo Drivers. 31 Hz. Built in Tennessee.\u003c\/h2\u003e\n\u003cp\u003eThe Proline X Pro KIK 10D is not a doubled single-driver box. It is a dual-driver-specific enclosure recalculated from the ground up for two Solo-X L7X 10\" drivers — 4.0 ft³ net, 31 Hz tuning, 61.25 square inches of port area. Langboard Elite MDF. Triple-layer baffle. Extensive internal bracing. V-groove and dado joinery. Hand-assembled and inspected in Tennessee before it ships. Backed by a 2-year warranty.\u003c\/p\u003e\n\u003cp\u003eYou source the drivers. We handle the box. \u003cstrong\u003eStandard $749.99 | With Acrylic Panel $799.99. Shipping included. 2–4 day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 10\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"None - Carpet Only","offer_id":43178306699353,"sku":"Pro KIK 10D SOLO X - None","price":749.99,"currency_code":"USD","in_stock":true},{"title":"Hex and Flag","offer_id":43178306732121,"sku":"Pro KIK 10D SOLO X - Hex","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofer-dualsubwoofer-enclosuresproline-x-5634581.jpg?v=1774535928"},{"product_id":"proline-x-enclosure-x-series-fits-dual-kicker-solo-x-12-subwoofer","title":"Proline X Enclosure | X Series | Fits Dual Kicker Solo X 12\" Subwoofer","description":"\u003cstyle\u003e\n  .xs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; 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}\n  .xs-variant h4 { color: #0f172a; font-size: 1.1em; font-weight: 700; margin: 0 0 8px 0; }\n  .xs-variant .price { font-size: 1.6em; font-weight: 800; color: #92400e; margin: 8px 0; }\n  .xs-variant p { font-size: 0.95em; color: #64748b; margin: 0; }\n  .xs-cta { background: linear-gradient(135deg, #0f172a 0%, #92400e 100%); padding: 60px 40px; text-align: center; color: white; }\n  .xs-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .xs-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  .xs-disclaimer { font-size: 0.85em; opacity: 0.7; font-style: italic; margin-top: 20px; }\n  @media (max-width: 768px) {\n    .xs-hero { padding: 40px 20px; }\n    .xs-hero .xs-title { font-size: 1.8em; }\n    .xs-section { padding: 30px 20px; }\n    .xs-section h2 { font-size: 1.6em; }\n    .xs-grid, .xs-variant-grid { grid-template-columns: 1fr; }\n    .xs-warranty { flex-direction: column; gap: 12px; }\n    .xs-cta { padding: 40px 20px; }\n    .xs-cta h2 { font-size: 1.6em; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"xs-wrap\"\u003e\n\n  \u003cdiv class=\"xs-hero\"\u003e\n    \u003cp class=\"xs-title\"\u003eProline X X Series | Pro KIK 12D X\u003c\/p\u003e\n    \u003cp class=\"xs-subtitle\"\u003eDual 12\" Ported Enclosure | Built for Two Kicker Solo-X L7X Drivers\u003c\/p\u003e\n    \u003cdiv class=\"xs-badges\"\u003e\n      \u003cspan class=\"xs-badge\"\u003e6.0 ft³ Net\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e31 Hz Tuning\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eTriple-Layer Baffle\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e44\" × 16\" × 27.5\"\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003e91 sq in Port\u003c\/span\u003e\n      \u003cspan class=\"xs-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eTwo Solo-X 12\" Drivers. One Correctly Engineered Enclosure.\u003c\/h2\u003e\n    \u003cp\u003eThe dual 12\" X Series is a front-firing, high-output ported enclosure built for two Solo-X L7X 12\" drivers in a shared chamber. Both drivers and the port face forward. Two terminal cups sit on the side panel for clean wiring access. The enclosure loads into the cabin from a trunk or cargo floor position — drivers and port firing toward the rear seat.\u003c\/p\u003e\n    \u003cp\u003eRunning two L7X 12\" drivers together is not a matter of scaling the single 12\" box. Combined displacement, excursion load, and port velocity are recalculated independently for the two-driver shared alignment. The result is 6.0 cubic feet net internal volume tuned to 31 Hz with 91 square inches of port area — every number a consequence of the combined T\/S parameters of two Solo-X L7X 12\" drivers, not a template.\u003c\/p\u003e\n    \u003cp\u003eThis is an enclosure-only product. You source the drivers — we handle the box. The square baffle cutouts are machined specifically to the L7X 12\" platform geometry. This enclosure is not cross-compatible with round 12\" drivers.\u003c\/p\u003e\n    \u003cdiv class=\"xs-alert\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 12\".\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eWhy This Enclosure for Two Solo-X L7X 12\" Drivers\u003c\/h2\u003e\n    \u003cp\u003eTwo L7X 12\" drivers in a correctly sized and tuned shared enclosure produce output and low-end extension that no single driver in the X Series lineup can match. The key is that both drivers share a common 6.0 ft³ tuned volume — not two isolated chambers, not two single boxes joined together. The combined T\/S parameters of both drivers determine the volume, tuning, and port area. At 31 Hz this enclosure reaches lower than generic dual-12\" alternatives typically tuned at 34–38 Hz, with 91 square inches of port area keeping air velocity clean at the combined input of two competition-class motors at sustained high power.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e6.0 ft³ — Dual-Driver Specific Volume\u003c\/h4\u003e\n        \u003cp\u003eNot 2 × 3.0. The combined T\/S parameters of two L7X 12\" drivers in a shared enclosure produce a different optimal volume than two independent single boxes. 6.0 ft³ net is the correct airspace for these two drivers operating together in a vented alignment at 31 Hz, calculated after accounting for port displacement, triple-layer baffle, and bracing.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e31 Hz — Lower Than Generic, Correct for This Driver\u003c\/h4\u003e\n        \u003cp\u003eThe same tuning target as the single 12\" — arrived at independently for two drivers. Generic dual-12\" enclosures run 4–7 Hz higher. That difference is audible in the 28–35 Hz range where two L7X 12\" motors working together have significant output capability. This enclosure does not leave that extension on the table.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003e91 sq in Port Area\u003c\/h4\u003e\n        \u003cp\u003eTwo L7X 12\" motors at sustained competition power move significant combined air volume. At 91 square inches the port area keeps velocity clean at the 31 Hz tuning point where both drivers are working hardest — no chuffing, no compression, no port artifacts under sustained dual-driver load.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eFront-Firing Configuration\u003c\/h4\u003e\n        \u003cp\u003eBoth drivers and the port fire forward from the front face. The two terminal cups are on the side panel. This is a traditional trunk-forward install orientation — the enclosure sits on the trunk floor or cargo surface with drivers and port loading rearward into the cabin. No special vehicle type required.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eConstruction: Built for Two Large-Format Competition Drivers\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 12D uses the same construction methodology as every Proline X enclosure — Langboard Elite MDF, V-groove and dado joinery, extensive internal bracing, in-house terminal cups, hand-assembled in Tennessee. Two L7X 12\" motors generate twice the pressure load and twice the excursion force against the front baffle of the single 12\". The construction specs reflect that.\u003c\/p\u003e\n\n    \u003ch3\u003eTriple-Layer Mounting Baffle — 2.25\"\u003c\/h3\u003e\n    \u003cp\u003eThe dual 12\" runs a triple-layer front baffle at 2.25\" total thickness. Two L7X 12\" motor assemblies — each with triple-stacked ferrite magnets, 3\" voice coils, and dual-spider suspension — cycling against the front panel at high excursion generate more combined force than any dual-layer baffle is designed to handle at competition power levels. Triple-layer construction keeps both drivers seated, both gasket seals intact, and the baffle acoustically inert under sustained high-power dual-driver input.\u003c\/p\u003e\n\n    \u003ch3\u003eLangboard Elite MDF — Named, Verified, Documented\u003c\/h3\u003e\n    \u003cp\u003eEvery panel is cut from Langboard Elite MDF — 3\/4\" (18mm) — a named, mill-documented panel stock produced in the United States. At 6.0 ft³ with 91 square inches of port area, the panel spans on this enclosure are among the largest in the X Series lineup. Published internal bond and modulus of elasticity data is the structural foundation that keeps those larger panels performing correctly under sustained competition power.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eLangboard Elite — Published Mill Data\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eDensity:\u003c\/strong\u003e 48.5 lbs\/ft³ — higher density means less porosity, better screw retention, and reduced panel resonance under sustained bass pressure cycling\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eInternal Bond:\u003c\/strong\u003e 200 psi — resistance to delamination; two L7X 12\" drivers at competition power generate the highest joint pressure load of any dual-driver configuration in the X Series\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eModulus of Elasticity:\u003c\/strong\u003e 410,000 psi — panel stiffness under load; at 6.0 ft³ the unsupported panel spans require consistent stiffness across every sheet to stay inert at 31 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFace Screw Holding:\u003c\/strong\u003e 325 lbs — baffle hardware stays locked under the combined vibration load of two heavy-motor L7X 12\" assemblies at excursion\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eEdge Screw Holding:\u003c\/strong\u003e 250 lbs — joint integrity at every panel edge connection throughout the enclosure's service life\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eV-Groove and Dado Joinery\u003c\/h3\u003e\n    \u003cp\u003eEvery panel joint uses V-groove and dado joinery — CNC-cut interlocking grooves that mechanically lock panels before adhesive is applied. In a 6.0 ft³ dual-driver ported enclosure tuned to 31 Hz, the internal pressure on every joint under sustained competition power is at the upper end of what any front-firing X Series enclosure generates. The dado interlock resists shear forces regardless of glue condition over time.\u003c\/p\u003e\n\n    \u003ch3\u003eExtensive Internal Bracing\u003c\/h3\u003e\n    \u003cp\u003eThe Pro KIK 12D is braced throughout the internal structure. At 6.0 ft³ the side panels, top, and rear panel all have significant unsupported surface area. Bracing is placed to control resonance across those surfaces at 31 Hz under combined dual-driver load. The bass comes from the drivers, not the box.\u003c\/p\u003e\n\n    \u003ch3\u003eIn-House Terminal Cups\u003c\/h3\u003e\n    \u003cp\u003eBoth terminal cups are built in-house at our Tennessee facility and mounted on the side panel for clean wiring access from either side of the install. The recessed ABS\/Carbon Fiber Composite cups feature stainless steel hardware, aluminum landing plates, and copper ring terminals, pre-wired with 12g OFC speaker wire. At 1000–2000W RMS per driver, run 8 AWG or larger from each terminal cup to the amplifier.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eShopSabre CNC Routers\u003c\/h4\u003e\n        \u003cp\u003eEvery panel is machine-cut on ShopSabre industrial CNC routers at our Tennessee facility. Both square baffle cutouts are machined to direct-fit the Solo-X L7X 12\" mounting flanges — no adapters, no modification required. The 11-1\/16\" square opening is held to tolerance so both drivers mount cleanly and both gasket seals correctly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHand-Assembled in Tennessee\u003c\/h4\u003e\n        \u003cp\u003eEvery enclosure is hand-assembled and inspected at our Tennessee facility before it ships. No overseas manufacturing. Each unit is built individually and checked for volume accuracy, joint integrity, and port clearance before leaving the floor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFinish \u0026amp; Options\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 12D is finished in Plush Black carpet and available in two configurations. Both ship assembled and ready to install. Lead time is 2–4 business days.\u003c\/p\u003e\n    \u003cdiv class=\"xs-variant-grid\"\u003e\n      \u003cdiv class=\"xs-variant\"\u003e\n        \u003ch4\u003eStandard — Carpet Only\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$1,249.99\u003c\/div\u003e\n        \u003cp\u003ePlush Black carpet finish. Recessed ABS\/Carbon Fiber Composite terminal cups. Pre-wired with 12g OFC speaker wire. Freight shipping included.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-variant featured\"\u003e\n        \u003ch4\u003eWith Front Acrylic Panel\u003c\/h4\u003e\n        \u003cdiv class=\"price\"\u003e$1,299.99\u003c\/div\u003e\n        \u003cp\u003eEverything in Standard plus a laser-etched custom Proline X Hex and Flag High Gloss acrylic graphics panel on the front baffle. Show-quality finish for competition and dedicated builds.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"xs-freight\"\u003e\n      \u003cp\u003e\u003cstrong\u003eFreight Shipping — Included in Price\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp\u003eThe Pro KIK 12D ships via freight carrier to the lower 48 states. Freight is included in the price — no additional shipping charge at checkout. The freight carrier will contact you to schedule a delivery appointment. Someone must be present to receive the shipment. Inspect all packaging before signing and photograph every side before opening. Note any damage on the delivery receipt before signing — do not sign a clean receipt for a visibly damaged shipment.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eCurbside delivery only. Arrange assistance for moving into your install location before the delivery date.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"xs-warranty\"\u003e\n      \u003cdiv class=\"xs-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n      \u003cp\u003eEvery Proline X X Series enclosure carries a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e covering manufacturing defects in materials and workmanship. Built in Tennessee and backed by Audio Intensity directly — no third-party claims process.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-section\"\u003e\n    \u003ch2\u003eFitment \u0026amp; Specifications\u003c\/h2\u003e\n    \u003cp\u003eThe Pro KIK 12D is purpose-built for two Kicker Solo-X L7X 12\" drivers in both available impedance configurations. Both square baffle cutouts are on the front face. The port exits the front face. Terminal cups are on the side panel. At 44\" wide and 27.5\" deep, measure your available install space at both dimensions before ordering — width and depth are both binding constraints at this enclosure size.\u003c\/p\u003e\n\n    \u003cdiv class=\"xs-highlight\"\u003e\n      \u003ch3\u003eDimensional \u0026amp; Acoustic Specifications\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eExternal Dimensions:\u003c\/strong\u003e 44\" W × 16\" H × 27.5\" D\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eNet Internal Volume:\u003c\/strong\u003e 6.0 ft³\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTuning Frequency:\u003c\/strong\u003e 31 Hz\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Area:\u003c\/strong\u003e 91 sq in\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eDriver Orientation:\u003c\/strong\u003e Front-Firing\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003ePort Orientation:\u003c\/strong\u003e Front-Firing\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTerminal Cups:\u003c\/strong\u003e Dual — Side Panel\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eFront Baffle Thickness:\u003c\/strong\u003e 2.25\" Triple-Layer\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eRecommended Power:\u003c\/strong\u003e 1000–2000W RMS per driver\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eWiring Configurations\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 2Ω Drivers — Parallel\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in parallel for a 1Ω final load. Requires an amplifier stable at 1Ω. Maximum power transfer from high-current monoblocks rated at 1Ω.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 4Ω Drivers — Parallel\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in parallel for a 2Ω final load. Most common configuration — compatible with the widest range of high-output monoblock amplifiers.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eTwo Single 2Ω Drivers — Series\u003c\/h4\u003e\n        \u003cp\u003eWire both drivers in series for a 4Ω final load. Use when your amplifier is not stable at lower impedances. Output will be lower than parallel configurations at equivalent amplifier power.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003ePlan Before You Order\u003c\/h4\u003e\n        \u003cp\u003eSelect driver impedance based on your amplifier's stable output impedance. At 1000–2000W RMS per driver, plan your full electrical system before committing to amplifier selection. Contact us with your amplifier model and wiring plan for confirmation.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eIdeal Install Applications\u003c\/h3\u003e\n    \u003cdiv class=\"xs-grid\"\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eFull-Size Trunk Builds\u003c\/h4\u003e\n        \u003cp\u003eAt 44\" wide and 27.5\" deep the Pro KIK 12D requires a full-size trunk. Measure width at the narrowest point of your trunk opening and depth from the rear seat back to the rear of the trunk floor. Both dimensions need to clear before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eSUV Cargo Builds\u003c\/h4\u003e\n        \u003cp\u003eFull-size SUV cargo areas with adequate floor depth accommodate this enclosure in a front-firing orientation. The 16\" height keeps it below the window line in most SUV configurations. Verify cargo floor dimensions before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eDedicated SPL Builds\u003c\/h4\u003e\n        \u003cp\u003eTwo L7X 12\" drivers in a correctly tuned 6.0 ft³ enclosure at 1000–2000W RMS per driver represents the highest front-firing output in the X Series dual-driver lineup. The Pro KIK 12D is built to competition construction standards for builds that will be pushed to the driver's rated limits.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"xs-card\"\u003e\n        \u003ch4\u003eHigh-Output Daily Driver\u003c\/h4\u003e\n        \u003cp\u003eThe 31 Hz tuning delivers low-end extension that higher-tuned generic alternatives cannot access. For daily use at real power levels, two L7X 12\" drivers loaded correctly at 31 Hz produce the kind of output that makes the enclosure investment obvious from the first listen.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xs-cta\"\u003e\n    \u003ch2\u003eTwo 12\" Drivers. Built to Spec. Built in Tennessee.\u003c\/h2\u003e\n    \u003cp\u003eThe Proline X Pro KIK 12D is not two single boxes joined together. It is a dual-driver-specific enclosure recalculated from the ground up for two Solo-X L7X 12\" drivers — 6.0 ft³ net, 31 Hz tuning, 91 square inches of port area. Langboard Elite MDF. Triple-layer baffle. Extensive internal bracing. V-groove and dado joinery. Hand-assembled and inspected in Tennessee. Freight included. Backed by a 2-year warranty.\u003c\/p\u003e\n    \u003cp\u003eYou source the drivers. We handle the box. \u003cstrong\u003eStandard $1,249.99 | With Acrylic Panel $1,299.99. Freight included. 2–4 day lead time.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp class=\"xs-disclaimer\"\u003eAudio Intensity and Proline X are not affiliated with Kicker. This enclosure is engineered to match the published Thiele-Small specifications of the Kicker Solo-X L7X 12\".\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Standard - Hex and Flag","offer_id":43278391378009,"sku":"Pro KIK 12D X | Hex","price":1299.99,"currency_code":"USD","in_stock":true},{"title":"None - Carpet Only","offer_id":43278391345241,"sku":"Pro KIK 12D X | None","price":1249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-dual-kicker-solo-x-12-subwoofersubwoofer-enclosuresproline-x-9144715.webp?v=1779355146"}],"url":"https:\/\/audiointensity.com\/collections\/proline-x-x-series-enclosures-built-for-the-kicker-solo-x.oembed","provider":"Audio Intensity","version":"1.0","type":"link"}