{"title":"Alpine Subwoofer Boxes and Enclosures","description":"\u003cdiv class=\"ai-collection-block\"\u003e\n\n\u003ch2\u003eBuilt for the RS-W10D4\u003c\/h2\u003e\n\n\u003cp\u003eThree builds around one driver. A Micro Series sealed cabinet at $249.99 bare, the same cabinet loaded with the RS-W10D4 at $899.99, and a direct fit behind seat build for the 2015 to 2023 Ford F-150 and F-250 loaded at $959.99.\u003c\/p\u003e\n\n\u003cp\u003eThe RS-W10D4 is Alpine's shallow mount R Series 10, dual voice coil at 4 ohms. The D4 in the model name is the coil configuration, not a size, which catches people out when they are working out final impedance.\u003c\/p\u003e\n\n\u003ch2\u003eWhy This Driver Ends Up in Trucks\u003c\/h2\u003e\n\n\u003cp\u003eTwo of the three builds here are truck oriented and that is not a coincidence. Shallow mount drivers exist because behind seat and under seat spaces have a depth that the vehicle decides and you do not. The RS-W10D4 fits where a conventional 10 will not, which is the whole reason to choose it.\u003c\/p\u003e\n\n\u003cp\u003eIf you have the depth for a standard driver, a conventional 10 in a conventional box will generally give you more output for the money. Shallow is a solution to a constraint rather than an upgrade.\u003c\/p\u003e\n\n\u003ch2\u003eMicro Series Construction\u003c\/h2\u003e\n\n\u003cp\u003eStack fabricated: layered CNC cut panels rather than dado joinery, with dowels between layers acting as tension reinforcement. That keeps the walls rigid at a reduced external footprint, which is what a shallow build needs. All four corners are radiused three inches top down, and the area behind the driver magnet is precision milled to recover internal volume and relieve backpressure against the voice coil.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-cta\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eDifferent Alpine Driver or Different Truck?\u003c\/p\u003e\n\u003cp\u003eWe build direct fit cabinets for platforms beyond the F-150, and for other Alpine drivers. Tell us the year, cab and model.\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\n\u003ch2\u003eHow These Are Built\u003c\/h2\u003e\n\n\u003cp\u003eLangboard Elite MDF, CNC cut on ShopSabre routers in Tullahoma, Tennessee. Stack fabricated, internally reinforced, prewired to a Proline X ABS and carbon fiber terminal cup with stainless steel hardware, and shipped with polyfill installed. Micro Series enclosures carry a 2 year limited warranty on craftsmanship and materials.\u003c\/p\u003e\n\n\u003cp\u003eBrowse the wider range at the \u003ca href=\"https:\/\/audiointensity.com\/pages\/shop-subwoofer-enclosures\"\u003eenclosure finder\u003c\/a\u003e, or look at \u003ca href=\"https:\/\/audiointensity.com\/collections\/proline-x-micro-series\"\u003eMicro Series enclosures\u003c\/a\u003e, \u003ca href=\"https:\/\/audiointensity.com\/collections\/ford-f150-subwoofer-box\"\u003eFord F-150 enclosures\u003c\/a\u003e and \u003ca href=\"https:\/\/audiointensity.com\/collections\/loaded-subwoofer-boxes\"\u003eloaded enclosures\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Alpine Enclosure Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat does the D4 in RS-W10D4 mean?\u003c\/h3\u003e\n\u003cp\u003eDual voice coil, 4 ohms per coil. It is the coil configuration rather than a model size. You need it to work out your final impedance and confirm your amplifier is stable at it.\u003c\/p\u003e\n\n\u003ch3\u003eWhich F-150 years does the direct fit build cover?\u003c\/h3\u003e\n\u003cp\u003e2015 to 2023, including the F-250. Ford changed the platform for 2024 and the boxes are not interchangeable. If you have a 2024 or later truck, contact us.\u003c\/p\u003e\n\n\u003ch3\u003eShould I choose shallow or standard depth?\u003c\/h3\u003e\n\u003cp\u003eIf the space is fixed by the vehicle, shallow. If you have room for a conventional driver, a conventional driver in a conventional box will usually give you more for the money.\u003c\/p\u003e\n\n\u003ch3\u003eCan you build for other Alpine subwoofers?\u003c\/h3\u003e\n\u003cp\u003eYes. Give us the exact model, sealed or ported, single or dual, and your maximum external dimensions.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the difference between the bare and loaded versions?\u003c\/h3\u003e\n\u003cp\u003eThe loaded version arrives with the RS-W10D4 mounted, wired and sealed against the baffle. The bare cabinet is for people who already own the driver.\u003c\/p\u003e\n\n\u003ch3\u003eDo I still need an amplifier?\u003c\/h3\u003e\n\u003cp\u003eYes. These are passive enclosures. For a single subwoofer a monoblock matched to your final impedance is the standard approach.\u003c\/p\u003e\n\n\u003c\/div\u003e","products":[{"product_id":"2015-2023-ford-f150-f250-behind-seat-single-10-enclosure-loaded-alpine-rsw10d4","title":"2015-2023 Ford F-150\/F-250 Behind-Seat Single 10\" Enclosure – Loaded with Alpine RSW10D4","description":"\u003ch2 class=\"text-xl font-bold text-text-100 mt-1 -mb-0.5\"\u003ePremium Alpine Subwoofer + Custom Ford F-Series Enclosure: The Ultimate Bass Solution\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eThe Alpine RSW10D4 subwoofer combined with our Proline X direct-fit enclosure creates the perfect bass solution for Ford F-150 (2015-2023) and F-250 (2017-2023) truck owners who want serious audio performance without sacrificing valuable space. This carefully engineered system addresses the unique acoustic challenges of Ford SuperCrew and Super Cab trucks by positioning a premium shallow-mount subwoofer behind the passenger-side rear seat, maintaining your under-seat storage while delivering impressive low-frequency response.\u003c\/p\u003e\n\u003ch3 class=\"text-lg font-bold text-text-100 mt-1 -mb-1.5\"\u003ePerformance That Exceeds Expectations\u003c\/h3\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eThe \u003ca href=\"https:\/\/audiointensity.com\/products\/alpine-shallow-10-inch-subwoofer-rsw10d4\" title=\"Alpine Shallow Subwoofer\"\u003eAlpine RSW10D4 shallow subwoofer\u003c\/a\u003e is the heart of this system. It features an oversized 4-inch voice coil powered by a neodymium magnet that delivers an impressive 600W RMS of power handling. Despite its compact design, requiring only 3.25 inches of mounting depth, this subwoofer achieves the same cone movement (20mm of excursion) as full-size subwoofers, producing deep, accurate bass that enhances every genre of music.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/Overview_-_visual_selection.png?v=1746500510\" alt=\"Alpine Subwoofer Features\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch3 class=\"text-lg font-bold text-text-100 mt-1 -mb-1.5\"\u003eCustom-Engineered For Your Ford F-Series\u003c\/h3\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eOur \u003ca href=\"https:\/\/audiointensity.com\/products\/2015-2023-ford-f150-2017-2023-f250-direct-fit-subwoofer-enclosure\" title=\"F150 direct fit subwoofer enclosure - behind the seat\"\u003eProline X enclosure\u003c\/a\u003e isn't just another generic box – it's specifically designed for the acoustics of Ford F-Series trucks, with an optimal 0.5 cubic feet of internal volume for enhanced bass frequencies. The enclosure sits snugly behind the passenger-side rear seat, featuring pre-drilled mounting holes, threaded inserts for secure subwoofer installation, and premium black carpeting that matches your truck's interior for a factory-installed appearance.\u003c\/p\u003e\n\u003ch3 class=\"text-lg font-bold text-text-100 mt-1 -mb-1.5\"\u003eFactory Integration With Aftermarket Sound\u003c\/h3\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eWhether you're upgrading your factory audio system or building a custom setup, this Alpine-Proline X combination delivers exceptional bass response while maintaining your truck's everyday practicality. Experience the perfect balance of sound quality, output, and vehicle integration with this professional-grade audio solution designed specifically for your Ford F-Series.\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":42349773652057,"sku":"VS FD1 10-S ALP D4","price":959.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/2015-2023-ford-f-150-2017-2023-f-250-direct-fit-ford-series-loaded-subwoofer-enclosure-alpine-rsw10d4enclosed-subwooferproline-x-239261.jpg?v=1761970499"},{"product_id":"proline-x-micro-series-sealed-10-enclosure-loaded-alpine-rsw10d4","title":"Proline X Single 10\" Sealed Micro Series System | Loaded with Alpine RSW10D4","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Proline X Single 10\" Sealed Micro Series System pairs the \u003cstrong\u003eAlpine RSW10D4 10\" shallow-mount subwoofer\u003c\/strong\u003e with a \u003cstrong\u003eProline X Micro Series sealed enclosure\u003c\/strong\u003e built at our Tennessee facility. Net internal volume is \u003cstrong\u003e0.50 ft³\u003c\/strong\u003e — matched to Alpine's published specification for the RSW10D4 in a sealed alignment. At \u003cstrong\u003e3.25\" mounting depth\u003c\/strong\u003e, the RSW10D4 uses Alpine's Gen2 DD-Linear Magnetic Circuit technology to achieve \u003cstrong\u003e20mm of one-way cone excursion\u003c\/strong\u003e and \u003cstrong\u003e600W RMS\u003c\/strong\u003e handling — a specification that matches full-size R-Series Alpine drivers despite the shallow profile. The system ships pre-wired to \u003cstrong\u003e2 ohms\u003c\/strong\u003e at the terminal cup. Connect your amplifier and it is ready to run.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEvery panel is CNC-cut from \u003cstrong\u003e3\/4\" Langboard Elite MDF\u003c\/strong\u003e at our Tennessee facility — a mill-certified panel stock with a \u003cstrong\u003e200 psi internal bond rating\u003c\/strong\u003e, \u003cstrong\u003e410,000 psi modulus of elasticity\u003c\/strong\u003e, and \u003cstrong\u003e325 lb face screw holding strength\u003c\/strong\u003e. In a sealed enclosure this compact, panel rigidity is the entire acoustic story. The sealed air volume behind the driver controls cone motion — any flex or air leak directly corrupts that suspension. This box does not flex and does not leak.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eVersion III construction uses \u003cstrong\u003eV-groove combined with dado joinery\u003c\/strong\u003e throughout. The terminal cup is \u003cstrong\u003ebuilt in-house at our Tennessee facility\u003c\/strong\u003e — ABS\/Carbon Fiber Composite body, recessed mount, stainless steel hardware, aluminum landing plates, copper ring terminals, and \u003cstrong\u003e12g OFC speaker wire pre-installed\u003c\/strong\u003e. Polyfill is pre-installed and tuned for this specific volume. Nothing to source. Nothing to add. It ships ready to wire.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eShipping is included in the price.\u003c\/strong\u003e At 21.5\" wide and 5.25\" deep, this is the same compact footprint as the JL TW3 Micro Series system — but with a substantially more powerful driver inside. That cost is built into what you see. No freight line item on your order confirmation. What you see is what you pay.\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":42458189594713,"sku":"M10-S ALP D4","price":899.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/alpine-rsw10d4-shallow-subwoofer-in-proline-x-micro-series-enclosureenclosed-subwooferproline-x-886301.jpg?v=1761970632"},{"product_id":"proline-x-micro-series-10-sealed-enclosure-fits-alpine-rsw10","title":"Proline X Micro Series 10\" Sealed Enclosure - Fits Alpine RSW10","description":"\u003c!-- ============================================================\n     PROLINE X MICRO SERIES — ALPINE RS-W10D4\n     SEALED 10\" ENCLOSURE ONLY\n     Color system: Green (#16a34a primary)\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .ms-wrap * { box-sizing: border-box; }\n  .ms-wrap { font-family: inherit; color: #1e293b; line-height: 1.7; max-width: 1200px; margin: 0 auto; }\n  .ms-hero { background: linear-gradient(135deg, #0f172a 0%, #14532d 100%); border-radius: 8px; padding: 40px 36px; margin-bottom: 32px; position: relative; overflow: hidden; }\n  .ms-hero::before { content: ''; position: absolute; top: -40px; right: -40px; width: 220px; height: 220px; background: rgba(22,163,74,0.12); border-radius: 50%; }\n  .ms-hero-badge { display: inline-block; background: transparent; border: 2px solid #16a34a; color: #86efac; font-size: 0.75em; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 4px 14px; border-radius: 20px; margin-bottom: 16px; }\n  .ms-hero h2 { color: #ffffff; font-size: 1.65em; font-weight: 800; margin: 0 0 14px 0; line-height: 1.25; }\n  .ms-hero p { color: #cbd5e1; font-size: 1em; margin: 0 0 24px 0; max-width: 640px; line-height: 1.7; }\n  .ms-hero-stats { display: flex; gap: 28px; flex-wrap: wrap; }\n  .ms-stat { text-align: center; }\n  .ms-stat-num { display: block; color: #86efac; font-size: 1.5em; font-weight: 800; line-height: 1; }\n  .ms-stat-label { display: block; color: #94a3b8; font-size: 0.72em; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 4px; }\n  .ms-section { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #16a34a; border-radius: 6px; padding: 28px 32px; margin-bottom: 24px; }\n  .ms-section:nth-child(odd) { background: #f8fafc; }\n  .ms-section h3 { color: #14532d; font-size: 1.15em; font-weight: 700; margin: 0 0 14px 0; }\n  .ms-section p { color: #334155; font-size: 0.97em; margin: 0 0 12px 0; }\n  .ms-section p:last-child { margin-bottom: 0; }\n  .ms-highlight { background: #f0fdf4; border-left: 5px solid #16a34a; padding: 22px 28px; margin: 28px 0; border-radius: 0 6px 6px 0; }\n  .ms-highlight h3 { color: #14532d; margin: 0 0 10px 0; font-size: 1.1em; font-weight: 700; }\n  .ms-highlight h3 + h3 { margin-top: 18px; }\n  .ms-highlight p { margin-bottom: 10px; color: #1e293b; font-size: 0.97em; }\n  .ms-highlight p:last-child { margin-bottom: 0; }\n  .ms-alert { background: #dcfce7; border: 1px solid #16a34a; border-radius: 6px; padding: 14px 18px; margin: 20px 0; font-size: 0.93em; color: #166534; }\n  .ms-alert strong { color: #14532d; }\n  .ms-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 24px 0; }\n  @media (max-width: 600px) { .ms-card-grid { grid-template-columns: 1fr; } }\n  .ms-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 3px solid #16a34a; border-radius: 6px; padding: 22px; }\n  .ms-card-label { display: inline-block; background: #16a34a; color: #ffffff; font-size: 0.68em; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 3px 10px; border-radius: 3px; margin-bottom: 10px; }\n  .ms-card h4 { color: #14532d; font-size: 1em; font-weight: 700; margin: 0 0 10px 0; }\n  .ms-card-divider { height: 2px; background: #16a34a; width: 32px; margin-bottom: 12px; border-radius: 2px; }\n  .ms-card p { font-size: 0.93em; color: #475569; margin: 0; line-height: 1.65; }\n  .ms-card p strong { color: #14532d; }\n  .ms-warranty { background: #0f172a; border-left: 5px solid #16a34a; border-radius: 0 6px 6px 0; padding: 20px 28px; margin: 28px 0; display: flex; align-items: center; gap: 20px; }\n  .ms-warranty-badge { background: #16a34a; color: #ffffff; font-size: 1em; font-weight: 800; padding: 10px 16px; border-radius: 4px; white-space: nowrap; }\n  .ms-warranty p { color: #cbd5e1; font-size: 0.93em; margin: 0; line-height: 1.6; }\n  .ms-warranty strong { color: #ffffff; }\n  .ms-fitment { list-style: none; margin: 14px 0 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }\n  @media (max-width: 560px) { .ms-fitment { grid-template-columns: 1fr; } }\n  .ms-fitment li { font-size: 0.93em; color: #334155; padding: 8px 12px; background: #f0fdf4; border-left: 3px solid #16a34a; border-radius: 0 4px 4px 0; }\n  .ms-divider { border: none; border-top: 1px solid #e2e8f0; margin: 32px 0; }\n  .ms-langboard { font-weight: 700; color: #14532d; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ms-wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv class=\"ms-hero\"\u003e\n    \u003cspan class=\"ms-hero-badge\"\u003eMicro Series | Alpine RS-W10D4 | Enclosure Only\u003c\/span\u003e\n    \u003ch2\u003eBuilt for the Alpine RS-W10D4.\u003cbr\u003e0.50 cu ft. 5.25\" Deep.\u003c\/h2\u003e\n    \u003cp\u003eThe Alpine RS-W10D4 is a high-Qts shallow-mount driver — 600 watts RMS, 20mm Xmax, and a Qts of 1.19 that makes it forgiving in compact sealed enclosures and naturally impactful in daily-driver applications. The Proline X Micro Series enclosure delivers 0.50 cubic feet of sealed airspace in a double-layer stack-fab build that is 5.25 inches deep — the same shell as the JL 10TW3 build, matched to the Alpine's specific cutout geometry.\u003c\/p\u003e\n    \u003cdiv class=\"ms-hero-stats\"\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e0.50\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eCu Ft Net Volume\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e5.25\"\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eTotal Depth\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e1.19\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eDriver Qts\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ms-stat\"\u003e\n        \u003cspan class=\"ms-stat-num\"\u003e600W\u003c\/span\u003e\n        \u003cspan class=\"ms-stat-label\"\u003eDriver RMS Rating\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ENCLOSURE ONLY NOTICE --\u003e\n  \u003cdiv class=\"ms-alert\"\u003e\n    \u003cstrong\u003eEnclosure only.\u003c\/strong\u003e The Alpine RS-W10D4 subwoofer is not included. This enclosure is designed for customers who already own or are separately purchasing the RS-W10D4.\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 1: Volume and Qts --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eHigh-Qts Driver, Compact Sealed Box — What That Actually Means\u003c\/h3\u003e\n    \u003cp\u003eThe Alpine RS-W10D4 has a published Qts of 1.19 — one of the highest in the Micro Series lineup. A high Qts in a sealed enclosure produces an elevated system Qtc, which means the driver's low-frequency output rises gently before rolling off rather than dropping flat at the box resonance. At 0.50 cubic feet, the RS-W10D4's system Qtc will be well above 1.0 — which produces a warm, impactful bass character with good efficiency in the upper bass range.\u003c\/p\u003e\n    \u003cp\u003eAlpine publishes three sealed volume targets for this driver: 0.54 cu ft for a -3dB point at 32 Hz, 0.79 cu ft for -3dB at 30 Hz, and 1.04 cu ft for -3dB at 28 Hz. At 0.50 cubic feet this enclosure falls just below the smallest published target, which shifts the effective extension point slightly upward in exchange for maximum output efficiency in the 50–80 Hz range. For a daily-driver under-seat or behind-seat install, this is the practical tradeoff — a compact box that punches hard where the listener feels it most. If deeper anechoic extension is the priority, the larger published volumes require a box this format cannot deliver.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 2: Construction --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eDouble-Layer 1.5\" Baffle — Stack Fab, Dado Joinery, Dowel Reinforced\u003c\/h3\u003e\n    \u003cp\u003eThe front baffle is a double-layer stack-fab build — two CNC-cut Langboard Elite MDF panels bonded to 1.5 inches total thickness. At 600 watts RMS and 20mm Xmax on a 10\" cone, the baffle carries a sustained mechanical load that a single 3\/4\" panel will resonate under over time. Two bonded layers eliminate baffle resonance at the structural level. The stack-fab assembly is further reinforced with dowels throughout, adding mechanical alignment and shear resistance at every panel joint beyond what dado joinery and adhesive alone provide.\u003c\/p\u003e\n    \u003cp\u003eEvery panel joint uses CNC-cut interlocking dado slots — mechanical interlock before adhesive, adhesive seal after. The 5.25-inch total depth is the same shell geometry as the JL 10TW3 enclosure, with the baffle machined to the Alpine's specific cutout diameter rather than the JL's tab-ear geometry.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHY CARDS --\u003e\n  \u003cdiv class=\"ms-card-grid\"\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eVolume\u003c\/span\u003e\n      \u003ch4\u003e0.50 cu ft — Compact and Output-Efficient\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eAt 0.50 cubic feet, the RS-W10D4's high Qts produces a warm, elevated Qtc that maximizes output efficiency in the upper bass range. Alpine's smallest published sealed target is 0.54 cu ft — this enclosure lands just below, producing a \u003cstrong\u003eslightly elevated Qtc\u003c\/strong\u003e that suits daily-driver impact-focused installs.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eDepth\u003c\/span\u003e\n      \u003ch4\u003e5.25\" Total — 3.25\" Driver Clearance with Margin\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe RS-W10D4 requires \u003cstrong\u003e3.25\" of mounting depth\u003c\/strong\u003e. The enclosure provides sufficient clearance for the driver's rear motor structure at full excursion. At 5.25\" total depth this enclosure fits behind and under seats where conventional 10\" sealed boxes cannot.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eBaffle\u003c\/span\u003e\n      \u003ch4\u003e1.5\" Double-Layer — Dowel Reinforced Stack Fab\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eTwo bonded layers of \u003cstrong\u003eLangboard Elite 3\/4\" MDF\u003c\/strong\u003e at 1.5 inches total, further reinforced with \u003cstrong\u003edowels throughout the stack-fab assembly\u003c\/strong\u003e. At 600 watts RMS, baffle resonance at the panel level adds coloration — double-layer construction with dowel reinforcement eliminates it.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eMounting\u003c\/span\u003e\n      \u003ch4\u003e8\/32 Threaded Inserts — Machine Screws Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe baffle is fitted with \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e on the back face. Stainless machine screws are included. The RS-W10D4 mounts to steel — not MDF. Consistent clamping force, no stripping risk, and clean driver reinstallation when service is needed.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eWiring\u003c\/span\u003e\n      \u003ch4\u003eProline X Terminal Cup — Pre-Wired with 12g OFC\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with \u003cstrong\u003e12-gauge OFC\u003c\/strong\u003e run internally to the driver location. Connect your amplifier run to the terminal and mount the driver — no internal wiring work required.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eCutout\u003c\/span\u003e\n      \u003ch4\u003eDirect-Fit Alpine Geometry — Standard Round Flange\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eThe RS-W10D4 uses a \u003cstrong\u003estandard round mounting flange\u003c\/strong\u003e. The baffle cutout is machined to the Alpine's specific cutout diameter — the driver seats flush, seals against the gasket, and mounts to the threaded inserts without shimming or modification.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eConfiguration\u003c\/span\u003e\n      \u003ch4\u003eFront-Firing or Downfiring — Feet Included\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eRubber feet for \u003cstrong\u003edownfiring installation\u003c\/strong\u003e are included. Run it front-firing in a standard orientation or flip it downward to couple bass output with the vehicle floor. Downfiring is effective in truck cabs and SUVs where floor coupling enhances the perceived bass response.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eAcoustic\u003c\/span\u003e\n      \u003ch4\u003ePolyfill Pre-Installed\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003ePolyfill is packed and installed at the factory. It acoustically increases the effective internal volume, extending low-frequency output without adding external size. \u003cstrong\u003eFactory installation\u003c\/strong\u003e ensures consistent packing density across every unit.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ms-card\"\u003e\n      \u003cspan class=\"ms-card-label\"\u003eReinforcement\u003c\/span\u003e\n      \u003ch4\u003eDowel-Reinforced Stack Fab — Mechanical Strength at Every Joint\u003c\/h4\u003e\n      \u003cdiv class=\"ms-card-divider\"\u003e\u003c\/div\u003e\n      \u003cp\u003eDowels throughout the stack-fab assembly add mechanical alignment and shear resistance at panel joints independent of adhesive condition. Combined with \u003cstrong\u003edado joinery and adhesive\u003c\/strong\u003e, every joint in this enclosure is locked by three independent mechanical systems.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- HIGHLIGHT --\u003e\n  \u003cdiv class=\"ms-highlight\"\u003e\n    \u003ch3\u003eReady to Mount. Ready to Wire. Ready to Downfire.\u003c\/h3\u003e\n    \u003cp\u003eThe enclosure ships fully prepped. The \u003cstrong\u003eProline X terminal cup\u003c\/strong\u003e is installed and pre-wired with 12-gauge OFC — connect your amplifier run and wiring is complete. The double-layer baffle uses \u003cstrong\u003e8\/32 threaded inserts\u003c\/strong\u003e with stainless machine screws included. \u003cstrong\u003eRubber feet for downfiring\u003c\/strong\u003e are included. Polyfill is already factory-installed.\u003c\/p\u003e\n    \u003ch3\u003eImpedance Options — D4 Wiring\u003c\/h3\u003e\n    \u003cp\u003eThe RS-W10D4 has dual 4-ohm voice coils. Wire the two coils \u003cstrong\u003ein parallel for a 2-ohm load\u003c\/strong\u003e, or \u003cstrong\u003ein series for an 8-ohm load\u003c\/strong\u003e. Most builds run parallel at 2 ohms into a 2-ohm-stable monoblock in the 400–600 watt RMS range. Confirm your amplifier's stable impedance before wiring. The RS-W10D4's high Qts means it will produce audible output even when moderately underpowered — it is a forgiving driver to match.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FITMENT --\u003e\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eWhere It Fits\u003c\/h3\u003e\n    \u003cp\u003eAt 21.5\" × 14.5\" × 5.25\", this enclosure fits in the same tight installations as the JL 10TW3 version of the same shell. Common placements:\u003c\/p\u003e\n    \u003cul class=\"ms-fitment\"\u003e\n      \u003cli\u003eUnder-seat — extended cab and crew cab trucks\u003c\/li\u003e\n      \u003cli\u003eBehind-seat — full-size truck cabs (front-firing or downfire)\u003c\/li\u003e\n      \u003cli\u003eTrunk corners — compact and mid-size sedans\u003c\/li\u003e\n      \u003cli\u003eSide cargo panels — SUVs and crossovers\u003c\/li\u003e\n      \u003cli\u003eHatch floor — sports cars and hatchbacks\u003c\/li\u003e\n      \u003cli\u003eSpare tire well — select SUV and crossover platforms\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WARRANTY --\u003e\n  \u003cdiv class=\"ms-warranty\"\u003e\n    \u003cdiv class=\"ms-warranty-badge\"\u003e2-Year Warranty\u003c\/div\u003e\n    \u003cp\u003e\u003cstrong\u003eAll Proline X Micro Series enclosures carry a two-year manufacturer's warranty\u003c\/strong\u003e against defects in materials and workmanship. Built and inspected in our Tullahoma, Tennessee facility before shipment. Contact Audio Intensity directly for warranty support.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003chr class=\"ms-divider\"\u003e\n\n  \u003cdiv class=\"ms-section\"\u003e\n    \u003ch3\u003eMade in Tennessee\u003c\/h3\u003e\n    \u003cp\u003eEvery Proline X Micro Series enclosure is CNC-cut and hand-assembled in Tullahoma, Tennessee on ShopSabre CNC routers. Internal volume, cutout geometry, dado joint depth, baffle layer count, dowel placement, and terminal positioning are all held to spec on every unit. \u003cspan class=\"ms-langboard\"\u003eLangboard Elite MDF\u003c\/span\u003e throughout — named, mill-documented, published density and bond specifications.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\n\u003c!-- ============================================================\n     SPECS TABLE — drop into Specifications metafield\n     ============================================================ --\u003e\n\u003c!--\n\u003ctable width=\"100%\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eCompatible Driver\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eAlpine RS-W10D4 (Dual 4-Ohm)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eEnclosure Type\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eSealed\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eInternal Volume (Net)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0.50 Cubic Feet\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eLangboard Elite 3\/4\" MDF\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eCNC-Cut Stack Fab \/ Dado Joinery \/ Dowel Reinforced\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFront Panel Thickness\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e1.5 Inches (Double-Layer Stack Fab)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eExternal Width\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e21.5 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eExternal Height\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e14.5 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eExternal Depth\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e5.25 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eMax Mounting Depth\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e3.25 Inches\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eWoofer Opening\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eDirect Fit — Alpine RS-W10D4\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eDriver Mounting\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e8\/32 Threaded Inserts — Stainless Machine Screws Included\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eTerminal Cup\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eProline X Terminal Cup — Pre-Wired\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eInternal Wiring\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e12-Gauge OFC (Oxygen-Free Copper)\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003ePolyfill\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003ePre-Installed\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFiring Direction\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eFront-Firing or Downfiring\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eDownfire Feet\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eIncluded\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003ePlush Black Automotive Carpet\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e2 Years — Proline X \/ Audio Intensity\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eMade In\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eTullahoma, Tennessee, USA\u003c\/td\u003e\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\nNOTE: Weight not confirmed — add before publishing.\n--\u003e\n\n\n\u003c!-- ============================================================\n     CHEAT SHEET — drop into Quick Specs metafield\n     ============================================================ --\u003e\n\u003c!--\n\u003cul class=\"cheat-sheet-list\"\u003e\n  \u003cli\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Daily-driver installs — under-seat and behind-seat trucks, tight trunk and cargo builds\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003ePower:\u003c\/strong\u003e Rated for up to 600W RMS (Alpine RS-W10D4)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eTopology\/Class:\u003c\/strong\u003e Sealed \/ Double-Layer Stack Fab \/ Dowel Reinforced \/ Front-Fire or Downfire\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSonic Character:\u003c\/strong\u003e Warm, impactful daily-driver bass — high-Qts driver delivers strong upper-bass presence in a 5.25\" compact sealed build\u003c\/li\u003e\n\u003c\/ul\u003e\n--\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":43172667162713,"sku":"M10-S ALP","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-10-sealed-enclosure-fits-alpine-rsw10subwoofer-enclosuresproline-x-5431752.jpg?v=1774423520"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/collections\/proline-x-micro-series-subwoofer-boxes-alpine-8207538.jpg?v=1775820380","url":"https:\/\/audiointensity.com\/collections\/alpine-subwoofer-box.oembed","provider":"Audio Intensity","version":"1.0","type":"link"}