{"title":"Alpine Subwoofers and Enclosures","description":"\u003cdiv class=\"ai-collection-block\"\u003e\n\u003ch2\u003eAlpine Subwoofers We Carry\u003c\/h2\u003e\n\u003cp\u003eWe stock a hand-picked pair of Alpine drivers rather than the whole Alpine catalog, both from the R-Series Shallow line: the \u003ca href=\"https:\/\/audiointensity.com\/products\/alpine-shallow-10-inch-subwoofer-rsw10d4\"\u003eRS-W10D4\u003c\/a\u003e and the \u003ca href=\"https:\/\/audiointensity.com\/products\/alpine-rs-w12d4-r-series-shallow-12-inch-subwoofer\"\u003eRS-W12D4\u003c\/a\u003e. Each gets 600 watts RMS and 20 mm of Xmax out of 3.25 inches of mounting depth, using a 4 inch voice coil, a neodymium motor and Alpine's dual-gap DD Linear motor design.\u003c\/p\u003e\n\u003ch3\u003e10 or 12\u003c\/h3\u003e\n\u003cp\u003eThe two share their motor, power rating and depth, so the choice comes down to the cutout and the air you can give them. The RS-W10D4 takes a 9-5\/8 inch cutout and Alpine recommends 0.45 to 1.0 cubic feet sealed. The RS-W12D4 takes an 11-5\/8 inch cutout and wants 0.6 to 1.5 cubic feet. Both are dual 4 ohm, wiring to 2 ohms in parallel or 8 in series.\u003c\/p\u003e\n\u003ch3\u003eWhy Alpine Keeps Them Sealed\u003c\/h3\u003e\n\u003cp\u003eThese are high-Q drivers, and Alpine publishes only sealed recommendations for the R-Series Shallow line. Each driver page quotes Alpine's own recommended boxes with the external size, net volume and F3 Alpine lists for each.\u003c\/p\u003e\n\n\u003ch2\u003eEnclosures Cut for Alpine Drivers\u003c\/h2\u003e\n\u003cp\u003eEvery Proline X cabinet on this page is cut for one Alpine model, not a nominal size, with the cutout and mounting depth cut direct fit. Match the model on the product page to the model on your woofer's label.\u003c\/p\u003e\n\u003ch3\u003eR-Series Shallow, R2 and S2\u003c\/h3\u003e\n\u003cp\u003eFor the RS-W10 and RS-W12 we build low down fire sealed cabinets in single and dual, and a Micro Series sealed 10. For the full-depth R2 and S2 lines we build sealed wedges in single and dual, plus ported wedges for the R2-W12, S2-W12 and S2-W8.\u003c\/p\u003e\n\u003ch3\u003eLoaded Builds\u003c\/h3\u003e\n\u003cp\u003eSome RS-W10 cabinets ship with the RS-W10D4 already mounted and wired: the \u003ca href=\"https:\/\/audiointensity.com\/products\/proline-x-micro-series-sealed-10-enclosure-loaded-alpine-rsw10d4\"\u003eMicro Series sealed 10 system\u003c\/a\u003e and behind-seat builds for the Ford F-150 and F-250. Check each product page for current stock. Every enclosure-only option is in our \u003ca href=\"https:\/\/audiointensity.com\/collections\/alpine-subwoofer-box\"\u003eAlpine subwoofer box collection\u003c\/a\u003e, and every cabinet we build is in the \u003ca href=\"https:\/\/audiointensity.com\/collections\/subwoofer-box\"\u003esubwoofer box collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-spec\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eQuick Reference: Alpine R-Series Shallow\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003eRS-W10D4:\u003c\/span\u003e 3.25 in depth, 9-5\/8 in cutout, 600W RMS, dual 4 ohm, 0.45 to 1.0 cu ft sealed\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003eRS-W12D4:\u003c\/span\u003e 3.25 in depth, 11-5\/8 in cutout, 600W RMS, dual 4 ohm, 0.6 to 1.5 cu ft sealed\u003c\/p\u003e\n\u003c\/aside\u003e\n\n\u003cp\u003ePowering an Alpine sub? Our \u003ca href=\"https:\/\/audiointensity.com\/collections\/monoblock-amplifier\"\u003emonoblock amplifiers\u003c\/a\u003e are the place to start, and more thin options across brands are in our \u003ca href=\"https:\/\/audiointensity.com\/collections\/shallow-mount-subwoofer\"\u003eshallow mount subwoofers\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-cta\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eNeed Help With Fitment?\u003c\/p\u003e\n\u003cp\u003eTell us the vehicle and the space, and we will match the Alpine driver, the load and the cabinet.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-contact-phone\"\u003e931-563-5151\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/aside\u003e\n\n\u003ch2\u003eAlpine Questions\u003c\/h2\u003e\n\u003ch3\u003eWhich Alpine subwoofers do you sell?\u003c\/h3\u003e\n\u003cp\u003eWe carry a select few Alpine drivers rather than the whole catalog. Right now that is the R-Series Shallow \u003ca href=\"https:\/\/audiointensity.com\/products\/alpine-shallow-10-inch-subwoofer-rsw10d4\"\u003eRS-W10D4\u003c\/a\u003e and \u003ca href=\"https:\/\/audiointensity.com\/products\/alpine-rs-w12d4-r-series-shallow-12-inch-subwoofer\"\u003eRS-W12D4\u003c\/a\u003e, both dual 4 ohm and 600 watts RMS. Any Alpine driver we add will appear on this page.\u003c\/p\u003e\n\u003ch3\u003eDo you build enclosures for other Alpine subwoofers?\u003c\/h3\u003e\n\u003cp\u003eYes. We cut Proline X enclosures for Alpine R2, S2 and R-Series Shallow drivers from 8 to 12 inch, sealed and ported, in wedge, down fire and standard shapes. Each cabinet is sized for one specific model. The full set is in our \u003ca href=\"https:\/\/audiointensity.com\/collections\/alpine-subwoofer-box\"\u003eAlpine subwoofer box collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich enclosures fit the RS-W10D4 and RS-W12D4?\u003c\/h3\u003e\n\u003cp\u003eFor the RS-W12D4, our \u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-12-enclosure-alpine-rs-w-shallow\"\u003edown fire sealed 12\u003c\/a\u003e and \u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-12-enclosure-alpine-rs-w-shallow\"\u003edown fire sealed dual 12\u003c\/a\u003e. For the RS-W10D4, our \u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-10-enclosure-alpine-rs-w-shallow\"\u003edown fire sealed 10\u003c\/a\u003e, \u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-10-enclosure-alpine-rs-w-shallow\"\u003edown fire sealed dual 10\u003c\/a\u003e and \u003ca href=\"https:\/\/audiointensity.com\/products\/proline-x-micro-series-10-sealed-enclosure-fits-alpine-rsw10\"\u003eMicro Series sealed 10\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCan I buy an enclosure with the Alpine driver already installed?\u003c\/h3\u003e\n\u003cp\u003eYes, for the RS-W10D4. The \u003ca href=\"https:\/\/audiointensity.com\/products\/proline-x-micro-series-sealed-10-enclosure-loaded-alpine-rsw10d4\"\u003eMicro Series sealed 10 system\u003c\/a\u003e and our Ford F-150 and F-250 behind-seat builds ship with it mounted and wired. Our other enclosures ship empty, and the drivers are listed separately.\u003c\/p\u003e\n\u003ch3\u003eSealed or ported for an Alpine subwoofer?\u003c\/h3\u003e\n\u003cp\u003eAlpine publishes only sealed recommendations for the R-Series Shallow RS-W10D4 and RS-W12D4, and we recommend sealed for them. The full-depth R2 and S2 drivers also work ported, and we cut ported wedges for the R2-W12, S2-W12 and S2-W8.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"alpine-shallow-10-inch-subwoofer-rsw10d4","title":"Alpine RS-W10 | R-Series Shallow 10 inch Subwoofer | Dual 2 or 4 Ohm","description":"\u003cstyle\u003e\n .rf-wrap { max-width: 100%; font-family: inherit; color: #d1d5db !important; }\n .rf-hero { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #b91c1c !important; }\n .rf-eyebrow { color: #9ca3af !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n .rf-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n .rf-hero p { color: #d1d5db !important; font-size: 16px; margin: 0 0 18px 0; }\n .rf-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n .rf-badge { background: #b91c1c !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n .rf-badge-alt { background: #1f2937 !important; color: #d1d5db !important; border: 1px solid #374151 !important; }\n .rf-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #b91c1c !important; padding-left: 12px; }\n .rf-wrap p, .rf-wrap li { color: #d1d5db !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n .rf-wrap a { color: #f87171 !important; text-decoration: underline; }\n .rf-callout { background: #1f2937 !important; border: 1px solid #374151 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n .rf-callout p { color: #d1d5db !important; margin: 0 0 8px 0; }\n .rf-table { width: 100%; border-collapse: collapse; margin: 16px 0 22px 0; font-size: 15px; }\n .rf-table th { background: #b91c1c !important; color: #ffffff !important; padding: 10px 12px; text-align: left; }\n .rf-table td { background: #111827 !important; color: #d1d5db !important; padding: 10px 12px; border-bottom: 1px solid #1f2937 !important; }\n .rf-cta { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #b91c1c !important; }\n .rf-cta h3 { border-left: none !important; padding-left: 0; margin-top: 0; }\n @media (max-width: 600px) { .rf-table { font-size: 13px; } .rf-table th, .rf-table td { padding: 8px 6px; } }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rf-wrap\"\u003e\n\n \u003cdiv class=\"rf-hero\"\u003e\n \u003cp class=\"rf-eyebrow\"\u003eAlpine R-Series Shallow Subwoofer\u003c\/p\u003e\n \u003ch2\u003eAlpine RS-W10 10 Inch Shallow Subwoofer\u003c\/h2\u003e\n \u003cp\u003e600 watts RMS and 20 mm of Xmax from 3.25 inches of mounting depth. The RS-W10 gives a shallow 10 the same cone travel as Alpine's full-size R2 woofers, driven by a 4 inch voice coil and a neodymium motor. Choose the dual 4 ohm RS-W10D4 or the dual 2 ohm RS-W10D2 to suit your amplifier.\u003c\/p\u003e\n \u003cdiv class=\"rf-badges\"\u003e\n \u003cspan class=\"rf-badge\"\u003e600W RMS\u003c\/span\u003e\n \u003cspan class=\"rf-badge\"\u003e3.25 in Depth\u003c\/span\u003e\n \u003cspan class=\"rf-badge\"\u003e20 mm Xmax\u003c\/span\u003e\n \u003cspan class=\"rf-badge rf-badge-alt\"\u003eDual 4 or Dual 2 Ohm\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eFull-Size Excursion in a Shallow Basket\u003c\/h3\u003e\n \u003cp\u003eMost shallow 10s give up excursion to save depth. The RS-W10 keeps 20 mm of one-way linear excursion and 54 mm of peak-to-peak mechanical travel in a 3.25 inch mounting depth. The cutout is 9-5\/8 inches (243 mm), the frame is 10.81 inches across, and the driver displaces only 0.04 cubic feet, so it fits behind truck seats, in thin floor boxes and anywhere a full-depth 10 will not clear.\u003c\/p\u003e\n \u003cp\u003eAlpine's Gen2 DD Linear dual magnetic gap keeps the 4 inch voice coil under control at high excursion for lower distortion, and a neodymium magnet keeps the motor light and short. The coil former is vented, a cooling fin draws heat off the voice coil, and the frame is die-cast aluminum with a removable trim ring and an aluminum dust cap. The trim ring accepts Alpine's KTE-RS10G grille kit, sold separately.\u003c\/p\u003e\n\n \u003ch3\u003eDual 4 Ohm or Dual 2 Ohm\u003c\/h3\u003e\n \u003cp\u003eBoth versions share the basket, motor, power rating and mounting dimensions. The coil sets the load your amplifier sees:\u003c\/p\u003e\n \u003cdiv class=\"rf-callout\"\u003e\n \u003cp\u003e\u003cstrong\u003eRS-W10D4 (Dual 4 Ohm):\u003c\/strong\u003e coils in parallel give 2 ohms, in series 8 ohms. A pair wired 8 ohms each and paralleled gives 4 ohms.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eRS-W10D2 (Dual 2 Ohm):\u003c\/strong\u003e coils in parallel give 1 ohm, in series 4 ohms. A pair wired 4 ohms each and paralleled gives 2 ohms.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cp\u003eAlpine rates both at 600 watts RMS and 1800 watts peak, with a recommended amplifier range of 500 to 600 watts RMS per woofer.\u003c\/p\u003e\n\n \u003ch3\u003eAlpine's Recommended Sealed Boxes\u003c\/h3\u003e\n \u003cp\u003eAlpine designs the R-Series Shallow for sealed enclosures and gives a sealed range of 0.45 to 1.0 cubic feet net for the 10. These are Alpine's own recommended boxes for both coil versions, built from 3\/4 inch MDF, with the F3 and Fb figures Alpine publishes for each.\u003c\/p\u003e\n \u003ctable class=\"rf-table\"\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eExternal (W x H x D)\u003c\/th\u003e\n\u003cth\u003eGross\u003c\/th\u003e\n\u003cth\u003eNet\u003c\/th\u003e\n\u003cth\u003eF3, Fb\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall\u003c\/td\u003e\n\u003ctd\u003e16\" x 15\" x 6.25\"\u003c\/td\u003e\n\u003ctd\u003e0.54 cu ft\u003c\/td\u003e\n\u003ctd\u003e0.50 cu ft\u003c\/td\u003e\n\u003ctd\u003e32 Hz, 44 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e18\" x 15\" x 7\"\u003c\/td\u003e\n\u003ctd\u003e0.79 cu ft\u003c\/td\u003e\n\u003ctd\u003e0.75 cu ft\u003c\/td\u003e\n\u003ctd\u003e30 Hz, 40 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e20\" x 15\" x 8.75\"\u003c\/td\u003e\n\u003ctd\u003e1.04 cu ft\u003c\/td\u003e\n\u003ctd\u003e1.00 cu ft\u003c\/td\u003e\n\u003ctd\u003e28 Hz, 38 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eEnclosures We Cut for the RS-W10\u003c\/h3\u003e\n \u003cp\u003eWe build Proline X sealed cabinets for this driver in Tullahoma, Tennessee, with the 9-5\/8 inch cutout and 3.25 inch mounting depth cut direct fit:\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-10-enclosure-alpine-rs-w-shallow\"\u003eDown fire sealed 10 inch enclosure\u003c\/a\u003e for one RS-W10, 0.50 cubic feet net.\u003c\/li\u003e\n \u003cli\u003e\n\u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-10-enclosure-alpine-rs-w-shallow\"\u003eDown fire sealed dual 10 inch enclosure\u003c\/a\u003e for a pair, 0.50 cubic feet net per chamber.\u003c\/li\u003e\n \u003cli\u003e\n\u003ca href=\"https:\/\/audiointensity.com\/products\/proline-x-micro-series-10-sealed-enclosure-fits-alpine-rsw10\"\u003eMicro Series sealed 10 inch enclosure\u003c\/a\u003e, 0.50 cubic feet net.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003eWe also sell the \u003ca href=\"https:\/\/audiointensity.com\/products\/proline-x-micro-series-sealed-10-enclosure-loaded-alpine-rsw10d4\"\u003eMicro Series sealed 10 system\u003c\/a\u003e and Ford F-150 and F-250 behind-seat builds with the RS-W10D4 already installed. Need more cone area in the same depth? See the \u003ca href=\"https:\/\/audiointensity.com\/products\/alpine-rs-w12d4-r-series-shallow-12-inch-subwoofer\"\u003eAlpine RS-W12D4 shallow 12\u003c\/a\u003e, or everything we carry from Alpine on our \u003ca href=\"https:\/\/audiointensity.com\/collections\/alpine\"\u003eAlpine page\u003c\/a\u003e.\u003c\/p\u003e\n\n \u003cdiv class=\"rf-cta\"\u003e\n \u003ch3\u003eQuestions About Fitment or Wiring?\u003c\/h3\u003e\n \u003cp\u003eCall 931-563-5151 and talk to someone who installs these. We will help you pick the coil, the load and the box for your vehicle.\u003c\/p\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Alpine","offers":[{"title":"Dual 4 ohm","offer_id":42347389157465,"sku":"RSW10D4","price":699.99,"currency_code":"USD","in_stock":false},{"title":"Dual 2 ohm","offer_id":42347389190233,"sku":"RSW10D2","price":699.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/alpine-shallow-10-inch-subwoofer-powerhouse-bass-in-a-space-saving-designsubwooferalpine-943256.jpg?v=1761970490"},{"product_id":"2015-2023-ford-f150-f250-behind-seat-single-10-enclosure-loaded-alpine-rsw10d4","title":"2024-2026 Ford F-150\/F-250 Behind-Seat Single 10\" Enclosure – Loaded with Alpine RSW10","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap 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h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Vehicle Specific Series Enclosure for the Alpine RS-W10D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Alpine RS-W10D4, built to drop into the 2015-2023 F-150, 2017-2023 F-250\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e0.50 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Alpine RS-W10D4\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e2015-2023 F-150, 2017-2023 F-250\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.50\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.937\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e34 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eRS-W10D4 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/Overview_-_visual_selection.png?v=1746500510\" alt=\"Alpine Subwoofer Features\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Alpine RS-W10D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the RS-W10D4's published sealed target, with clearance cut for its 3.25 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe RS-W10D4 carries a published \u003cstrong\u003eFs of 31 Hz, Qts of 1.19 and Vas of 23.35 litres\u003c\/strong\u003e, and an EBP of 21, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.50 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.45 to 1.0 cu ft. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Vehicle Specific Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEach layer is cut to the cab profile and the stack does the joining. Dowel reinforcement runs between layers as tension hardware only, which is what lets the shell follow a behind seat contour without a corner joint in it.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own RS-W10D4, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Alpine RS-W10D4, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eAlpine RS-W10D4 4 ohm + 4 ohm  |  Qts 1.19  |  Fs 31 Hz  |  Vas 23.35 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.50 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.937\u003c\/td\u003e\n\u003ctd\u003e50.5 Hz\u003c\/td\u003e\n\u003ctd\u003e34.1 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eAlpine RS-W10D4 Frequency Response | Sealed, 0.50 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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587.3,59.7 589.4,59.8 591.4,59.9 593.5,60.0 595.6,60.2 597.7,60.3 599.7,60.4 601.8,60.5 603.9,60.6 605.9,60.7 608.0,60.9 610.1,61.0 612.2,61.1 614.2,61.2 616.3,61.3 618.4,61.4 620.5,61.5 622.5,61.6 624.6,61.7 626.7,61.8 628.8,61.8 630.8,61.9 632.9,62.0 635.0,62.1 637.0,62.2 639.1,62.3 641.2,62.4 643.3,62.4 645.3,62.5 647.4,62.6 649.5,62.7 651.6,62.7 653.6,62.8 655.7,62.9 657.8,63.0 659.9,63.0 661.9,63.1 664.0,63.2\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.50 cu ft (Qtc 1.937)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on this alignment:\u003c\/strong\u003e Alpine publishes a Qts of 1.19 for the RS-W10D4, which is high for a sealed application. In 0.50 cubic feet that produces a rise around system resonance rather than a flat response, along with an F3 of 34.1 Hz. Alpine's own sealed recommendation for this driver is 0.45 to 1.0 cubic feet, and the figure stays above 1.6 across that whole range. The numbers above are calculated straight from Alpine's published parameters, not adjusted. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":42349773652057,"sku":"VS FD2 10-S ALP","price":999.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_5a3a56c6-b6b2-4fc4-a184-efedfe5b9c07.jpg?v=1789013110"},{"product_id":"proline-x-micro-series-sealed-10-enclosure-loaded-alpine-rsw10d4","title":"Proline X Single 10\" Sealed Micro Series System | Loaded with Alpine RSW10","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap *{box-sizing:border-box;}\n.pl-hero{background:linear-gradient(135deg,#020617 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h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Micro Series Enclosure for the Alpine RS-W10D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Alpine RS-W10D4\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e0.50 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Alpine RS-W10D4\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.50\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.489-1.937\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e32.9-34.1 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eRS-W10D4 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Alpine RS-W10D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the RS-W10D4's published sealed target, with clearance cut for its 3.25 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe RS-W10D4 carries a published \u003cstrong\u003eFs of 31 Hz, Qts of 1.19 and Vas of 23.35 litres\u003c\/strong\u003e, and an EBP of 21, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.50 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.45 to 1.0 cu ft. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Micro Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEvery layer is a precision cut ring and the stacked layers do the joining themselves, so there is no butt joint or dado to flex or leak. Dowel reinforcement runs between layers as tension hardware only.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own RS-W10D4, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Alpine RS-W10D4, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eAlpine RS-W10D4 4 ohm + 4 ohm  |  Qts 1.19  |  Fs 31 Hz  |  Vas 23.35 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.50 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.937\u003c\/td\u003e\n\u003ctd\u003e50.5 Hz\u003c\/td\u003e\n\u003ctd\u003e34.1 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eAlpine RS-W10D4 Frequency Response | Sealed, 0.50 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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398.6,27.6 400.7,28.4 402.8,29.1 404.8,29.8 406.9,30.5 409.0,31.2 411.1,31.9 413.1,32.5 415.2,33.2 417.3,33.8 419.3,34.4 421.4,35.0 423.5,35.6 425.6,36.2 427.6,36.8 429.7,37.4 431.8,37.9 433.9,38.5 435.9,39.0 438.0,39.5 440.1,40.0 442.2,40.5 444.2,41.0 446.3,41.5 448.4,42.0 450.4,42.5 452.5,42.9 454.6,43.4 456.7,43.8 458.7,44.2 460.8,44.6 462.9,45.1 465.0,45.5 467.0,45.9 469.1,46.3 471.2,46.6 473.3,47.0 475.3,47.4 477.4,47.7 479.5,48.1 481.5,48.4 483.6,48.8 485.7,49.1 487.8,49.4 489.8,49.8 491.9,50.1 494.0,50.4 496.1,50.7 498.1,51.0 500.2,51.3 502.3,51.6 504.4,51.8 506.4,52.1 508.5,52.4 510.6,52.7 512.6,52.9 514.7,53.2 516.8,53.4 518.9,53.7 520.9,53.9 523.0,54.1 525.1,54.4 527.2,54.6 529.2,54.8 531.3,55.1 533.4,55.3 535.5,55.5 537.5,55.7 539.6,55.9 541.7,56.1 543.7,56.3 545.8,56.5 547.9,56.7 550.0,56.9 552.0,57.0 554.1,57.2 556.2,57.4 558.3,57.6 560.3,57.7 562.4,57.9 564.5,58.1 566.6,58.2 568.6,58.4 570.7,58.5 572.8,58.7 574.8,58.8 576.9,59.0 579.0,59.1 581.1,59.3 583.1,59.4 585.2,59.5 587.3,59.7 589.4,59.8 591.4,59.9 593.5,60.0 595.6,60.2 597.7,60.3 599.7,60.4 601.8,60.5 603.9,60.6 605.9,60.7 608.0,60.9 610.1,61.0 612.2,61.1 614.2,61.2 616.3,61.3 618.4,61.4 620.5,61.5 622.5,61.6 624.6,61.7 626.7,61.8 628.8,61.8 630.8,61.9 632.9,62.0 635.0,62.1 637.0,62.2 639.1,62.3 641.2,62.4 643.3,62.4 645.3,62.5 647.4,62.6 649.5,62.7 651.6,62.7 653.6,62.8 655.7,62.9 657.8,63.0 659.9,63.0 661.9,63.1 664.0,63.2\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.50 cu ft (Qtc 1.937)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on this alignment:\u003c\/strong\u003e Alpine publishes a Qts of 1.19 for the RS-W10D4, which is high for a sealed application. In 0.50 cubic feet that produces a rise around system resonance rather than a flat response, along with an F3 of 34.1 Hz. Alpine's own sealed recommendation for this driver is 0.45 to 1.0 cubic feet, and the figure stays above 1.6 across that whole range. The numbers above are calculated straight from Alpine's published parameters, not adjusted. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\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"},{"product_id":"performance-optimized-wedge-sealed-10-enclosure-alpine-r2-w10","title":"Performance Optimized Wedge Sealed 10\" Enclosure | Alpine R2-W10","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine R2-W10\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e10\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.58 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.50 ft³ Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e15\" × 13\" × 7.7\/12.4\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine R2-W10 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAlpine's flagship R2-Series 10-inch subwoofer. Pulp\/Kevlar cone with PP\/ceramic dust cap, high-amplitude multi-roll Santoprene surround (US Pat 8,208,677), progressive spider with reinforced-layer tinsel leads (US Pat 6,810,988), cast aluminum frame with perimeter venting (US Pat 7,684,585). 65.5mm 4-layer voice coil on aluminum former, 123oz double-stacked strontium ferrite motor. 750W RMS, 20mm Xmax. R2-W10D2 or R2-W10D4.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.58 cu ft gross produces 0.50 cu ft net after driver displacement. Clean alignment case: both coils land essentially at Butterworth in the same cabinet.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe R2-W10 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches ~20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eCone fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eTrunk acts as acoustic extension for smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back; cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine R2-W10\u003c\/h2\u003e\n\u003cp\u003e0.50 cubic feet net produces Qtc 0.71 with the D2 coil and Qtc 0.73 with the D4 coil based on Alpine's published T\/S parameters. Both are essentially textbook Butterworth alignments. F3 lands at 47 Hz across both coils. Matches Alpine's own recommended sealed volume.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc: 0.71 · D4 Qtc: 0.73 · Fc: ~47-48 Hz · F3: ~47 Hz both coils\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC-cut to 9.17\" (Alpine spec). Mounting depth required 6.9\". 8\/32 threaded inserts pressed into baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber composite, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own R2-W10.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Alpine R2-W10 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eShips R2-W10D2 or R2-W10D4. Alpine's 8AWG push terminals with VC configuration jumpers let you wire the dual voice coils in series or parallel right at the driver. Target 500-750W RMS at the woofer's final impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine R2-W10: Butterworth Both Coils, One Cabinet\u003c\/h2\u003e\n\u003cp\u003e0.50 cubic feet net at Qtc 0.71-0.73. Essentially Butterworth on both coils in a wedge that fires the driver rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44536221040729,"sku":"PO 10-S W R2 BB","price":259.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871104089,"sku":"PO 10-S W R2 B","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SWR2Front.jpg?v=1787533860"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-alpine-r2-w12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Alpine R2-W12","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine R2-W12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.85 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.75 ft³ Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e18\" × 15\" × 6.85\/13.125\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine R2-W12 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAlpine's flagship R2-Series 12-inch subwoofer. Pulp\/Kevlar cone, Santoprene surround, progressive spider, cast aluminum frame with perimeter venting. 65.5mm 4-layer aluminum voice coil, 144oz double-stacked strontium ferrite motor. 750W RMS, 20mm Xmax. R2-W12D2 or R2-W12D4.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.85 cu ft gross produces 0.75 cu ft net after driver displacement. Matches Alpine's own recommended sealed volume. D2 lands Qtc 0.68 (near-Butterworth), D4 lands Qtc 0.81 (punchy).\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe R2-W12 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches ~20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eCone fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eTrunk acts as acoustic extension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back; cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine R2-W12\u003c\/h2\u003e\n\u003cp\u003e0.75 cubic feet net produces Qtc 0.68 with the D2 coil (near-Butterworth musical) and Qtc 0.81 with the D4 coil (punchy) based on Alpine's published T\/S. Sits at the middle of Alpine's own recommended sealed range.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc: 0.68 · D4 Qtc: 0.81 · Fc: ~48 Hz · F3: 43-50 Hz depending on coil\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC-cut to 10.79\" (Alpine spec). Mounting depth required 7.45\". 8\/32 threaded inserts pressed into baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber composite, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own R2-W12.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Alpine R2-W12 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eShips R2-W12D2 or R2-W12D4. Alpine's 8AWG push terminals with VC configuration jumpers let you wire the dual voice coils in series or parallel right at the driver. Target 500-750W RMS at the woofer's final impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine R2-W12: Alpine's Own Sealed Spec\u003c\/h2\u003e\n\u003cp\u003e0.75 cubic feet net, matches Alpine's published sealed volume, in a wedge that fires the driver rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44536223105113,"sku":"PO 12-S W R2 BB","price":289.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871497305,"sku":"PO 12-S W R2 B","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWR2Front.jpg?v=1787533500"},{"product_id":"performance-optimized-wedge-sealed-dual-10-enclosure-alpine-r2-w10","title":"Performance Optimized Wedge Sealed Dual 10\" Enclosure | Alpine R2-W10","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine R2-W10 Dual\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 10\" Sealed Wedge | Two Separate Chambers | Rear-Firing Trunk-Load\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.16 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.50 ft³ Net\/Ch\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDual Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e28.5\" × 13\" × 7.65\/12.4\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine R2-W10 in a Dual-Driver Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eTwo R2-W10s in a single trunk-loading wedge with fully independent sealed chambers. 750W RMS per driver, +6dB headroom over single. Standing Proline X design rule: dual sealed enclosures always get full-height chamber dividers.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.16 cu ft total gross, split into 0.58 cu ft per-chamber gross, 0.50 cu ft per-chamber net. Same clean Butterworth alignment as the single-driver PO Wedge for R2-W10.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eFull-height, full-depth 3\/4\" MDF divider between the two chambers. Each driver sees its own dedicated air volume and its own terminal cup.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003eAll Proline X dual-driver sealed enclosures use this architecture. Each driver produces its own clean sealed alignment.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eBoth R2-W10s mount on the vertical trunk-lid-side face and fire rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches ~20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofers\u003c\/h4\u003e\n\u003cp\u003eBoth drivers on vertical face, firing rearward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eTrunk acts as acoustic extension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back; cargo space in front stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine R2-W10\u003c\/h2\u003e\n\u003cp\u003ePer-chamber 0.50 cubic feet net gives Butterworth alignment on both coils: D2 lands Qtc 0.71, D4 lands Qtc 0.73. Same as the single-driver PO Wedge. Run matched impedance drivers only.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers (Per Chamber)\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc: 0.71 · D4 Qtc: 0.73 · Fc: ~47-48 Hz · F3: ~47 Hz both coils\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF panels + 3\/4\" chamber divider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at both driver positions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTwo Pre-Wired Terminal Cups\u003c\/h4\u003e\n\u003cp\u003eOne per chamber, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own pair of matched R2-W10 drivers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the R2-W10 Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eTwo independent terminal cups let you wire in series or parallel externally at the amp. Alpine's 8AWG push terminals with VC jumpers let you handle coil wiring at each driver first, then combine externally. Run matched impedance drivers only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine R2-W10 Dual, Butterworth on Both, Doubled Up\u003c\/h2\u003e\n\u003cp\u003e0.50 cubic feet net per chamber, Butterworth on both coils, doubled up for +6dB of headroom.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44536357159001,"sku":"PO 10D-S W R2 BB","price":319.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589872349273,"sku":"PO 10D-S W R2 B","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10D-SWR2Front.jpg?v=1787514165"},{"product_id":"performance-optimized-wedge-sealed-dual-12-enclosure-alpine-r2-w12","title":"Performance Optimized Wedge Sealed Dual 12\" Enclosure | Alpine R2-W12","description":"\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine R2-W12 Dual\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 12\" Sealed Wedge | Two Separate Chambers | Rear-Firing Trunk-Load\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.70 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.75 ft³ Net\/Ch\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDual Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e29.5\" × 15\" × 8.57\/14\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine R2-W12 in a Dual-Driver Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eTwo R2-W12s in a single trunk-loading wedge with fully independent sealed chambers. 750W RMS per driver, +6dB headroom over single.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.70 cu ft total gross, split into 0.85 cu ft per-chamber gross, 0.75 cu ft per-chamber net. Same per-chamber alignment as the single-driver PO Wedge for R2-W12.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eFull-height, full-depth 3\/4\" MDF divider. Each driver sees its own dedicated air volume and terminal cup.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003eAll Proline X dual-driver sealed enclosures use this architecture. Each driver produces its own clean sealed alignment.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eBoth R2-W12s mount on the vertical trunk-lid-side face and fire rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches ~20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofers\u003c\/h4\u003e\n\u003cp\u003eBoth drivers on vertical face, firing rearward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eTrunk acts as acoustic extension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eWedge tucks against seat back.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine R2-W12\u003c\/h2\u003e\n\u003cp\u003ePer-chamber 0.75 cubic feet net gives D2 Qtc 0.68 (near-Butterworth), D4 Qtc 0.81 (punchy). Matches Alpine's own recommended sealed volume per driver.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers (Per Chamber)\u003c\/h3\u003e\n\u003cp\u003eD2 Qtc: 0.68 · D4 Qtc: 0.81 · Fc: ~48 Hz · F3: 43-50 Hz\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4\" MDF panels + 3\/4\" chamber divider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC-cut V-grooves at every panel intersection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4\" MDF sheets at both driver positions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTwo Pre-Wired Terminal Cups\u003c\/h4\u003e\n\u003cp\u003eOne per chamber, 12g OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n\u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n\u003cp\u003eCharcoal gray trunk liner standard; plush black +$10.\u003c\/p\u003e\n\u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n\u003cp\u003eBlack, Blue, Red, White, or none (-$40).\u003c\/p\u003e\n\u003ch3\u003eBox-Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eBox-only: bring your own pair of matched R2-W12 drivers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the R2-W12 Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eTwo independent terminal cups let you wire in series or parallel externally at the amp. Run matched impedance drivers only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year limited warranty. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine R2-W12 Dual, Alpine's Own Sealed Spec, Doubled\u003c\/h2\u003e\n\u003cp\u003e0.75 cubic feet net per chamber, Alpine's published sealed volume, doubled up for +6dB of headroom.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44536358273113,"sku":"PO 12D-S W R2 BB","price":369.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589872480345,"sku":"PO 12D-S W R2 B","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12D-SWR2Front.jpg?v=1787513874"},{"product_id":"performance-optimized-down-fire-sealed-10-enclosure-alpine-rs-w-shallow","title":"Performance Optimized Down Fire Sealed 10\" Enclosure | Alpine RSW10","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica 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10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}.df-tier{overflow-x:auto;margin:18px 0;border:1px solid #44403c;border-radius:8px}.df-tier table{width:100%;border-collapse:collapse;min-width:660px}.df-tier th{background:#0c0a09;color:#a8a29e;font-size:.74em;text-transform:uppercase;letter-spacing:.6px;padding:12px 14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#3d2412;color:#e8b98d}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(184,115,51,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Alpine RS-W10 Shallow\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e0.50 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eShortest In The Line\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.50\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.49\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, D2\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e32.9-34.1 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e4.75 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the Alpine RS-W10's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the Alpine RS-W10\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. The baffle is bored to the RS-W10's \u003cstrong\u003e9-5\/8 inch, 243mm cutout\u003c\/strong\u003e, and the internal height is set by a driver that displaces only \u003cstrong\u003e0.04 cubic feet\u003c\/strong\u003e, the smallest published displacement of any driver in the Down Fire series. That is what puts the finished cabinet at \u003cstrong\u003e4.75 inches tall\u003c\/strong\u003e on a 30 by 15 inch footprint, the shortest enclosure in the line. If you have measured your under seat space and everything else in the series is an inch too tall, this is the one that goes in.\u003c\/p\u003e\n\u003cp\u003eThe driver ships as the \u003cstrong\u003eRS-W10D2\u003c\/strong\u003e, dual 2 ohm, or the \u003cstrong\u003eRS-W10D4\u003c\/strong\u003e, dual 4 ohm. Both are rated 600 watts RMS and 1800 watts peak, with 20mm of one way linear excursion and 54mm of peak to peak mechanical travel across 380 cm² of cone area. The motor is a high-grade neodymium design driving a 4 inch high-temperature USA-wound voice coil, with Alpine's DD Linear dual magnetic gap holding distortion down when the cone is actually using that excursion, a vented coil former for airflow, and motor cooling fins that pull heat off the coil. The frame is die-cast aluminum with a black anodized threaded rear mounting frame and an aluminum dust cap.\u003c\/p\u003e\n\u003cp\u003eNeodymium is why the cabinet can be this short. There is no ferrite slug behind the cone eating internal air and adding height, so nearly all of the machined cavity is usable volume. Free air resonance is \u003cstrong\u003e30.0 Hz\u003c\/strong\u003e, and the motor's efficiency bandwidth product sits at 18.7 to 27.0 depending on coil, well inside the range that calls for a sealed load rather than a ported one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.50 cubic feet net\u003c\/strong\u003e out of a 0.539 cubic foot gross cavity. That is Alpine's own small-volume sealed target, and Alpine publishes an \u003cstrong\u003eF3 of 32 Hz\u003c\/strong\u003e at this volume.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eThe two coil variants do not load the same box the same way, so both are worth stating. The \u003cstrong\u003eDual 2-Ohm\u003c\/strong\u003e has a Qts of 0.950 and a 20.64 litre Vas; in 0.50 cubic feet it lands at Qtc 1.49, resonance lifted to 47 Hz, half power at 32.9 Hz. The \u003cstrong\u003eDual 4-Ohm\u003c\/strong\u003e has a Qts of 1.190 and a 23.35 litre Vas; it lands at Qtc 1.94, resonance at 50 Hz, half power at 34.1 Hz. Both figures are anechoic, taken before any cabin gain.\u003c\/p\u003e\n\u003cp\u003eAlpine's published sealed range runs 0.45 to 1.0 cubic feet, and larger volumes do reach lower: 0.75 net gives 30 Hz, 1.00 net gives 28 Hz. We build 0.50 because it is what holds the cabinet at 4.75 inches. A down fire enclosure that no longer fits under a seat has given up the thing that makes it worth building. Firing down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, and in-car response extends well below the published figure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. A perimeter cross-brace ties the long spans together on a 30 inch wide panel. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance. Mounting is into 8\/32 threaded inserts with stainless machine screws included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor. One cup, and both coil variants are dual voice coil, so final impedance is set at the driver.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eShortest In The Line\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e30 in W x 15 in D x 4.75 in H\u003c\/strong\u003e, measured in the down fire position, with no standoffs under the cabinet. Nothing else in the Down Fire series comes in under 5 inches. Polyfill is pre-installed and the shell is wrapped in plush black carpet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eAlpine rates the RS-W10 at \u003cstrong\u003e600 watts RMS\u003c\/strong\u003e and 1800 watts peak. Target 500 to 600 watts RMS on the amplifier. In this specific volume the cone does not run out of travel first: it reaches its 20.0mm one way limit somewhere between 998 and 1011 watts depending on which coil you have, which is above what the driver can absorb thermally, so the voice coil gives up before the suspension does.\u003c\/p\u003e\n\u003cp\u003eA subsonic filter at 25 Hz, 24 dB per octave, stops the cone wasting travel below the passband and moves that same 20.0mm limit out to roughly 1005 to 1028 watts. That is about 1 percent more amplifier for the price of one filter setting, and it is cheap insurance either way.\u003c\/p\u003e\n\u003cp\u003eBoth versions are dual voice coil, so you set your final impedance at the driver, and Alpine's application guide covers every wiring option for each. The enclosure carries a 1 year limited warranty. Bring your own RS-W10D2 or RS-W10D4; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eThis cabinet exists because one driver's published numbers said 0.50 cubic feet and 4.75 inches. Machined on our ShopSabre routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540231483481,"sku":"PO 10-S DF RSW","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SDFRSWFaceDown.jpg?v=1787371341"},{"product_id":"performance-optimized-down-fire-sealed-12-enclosure-alpine-rs-w-shallow","title":"Performance Optimized Down Fire Sealed 12\" Enclosure | Alpine RSW12","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 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14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#3d2412;color:#e8b98d}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(184,115,51,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 12\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Alpine RS-W12 Shallow\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e0.70 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLargest Cone Area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.70\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.73\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, D2\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e33.9-35.4 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e5.75 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the Alpine RS-W12's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the Alpine RS-W12\u003c\/h3\u003e\n\u003cp\u003eThis is a full 12 in a cabinet \u003cstrong\u003e5.75 inches tall\u003c\/strong\u003e on a 30 by 15 inch footprint. The baffle is bored to the RS-W12's \u003cstrong\u003e11-5\/8 inch, 295mm cutout\u003c\/strong\u003e, and the internal height is set by a driver Alpine publishes at only \u003cstrong\u003e0.05 cubic feet\u003c\/strong\u003e of displacement. A conventional 12 displaces two to four times that. This is the shortest 12 inch enclosure in the Down Fire line, and the answer when you want 12 inch cone area and have almost no vertical clearance.\u003c\/p\u003e\n\u003cp\u003eCone area is where this driver earns the cabinet: \u003cstrong\u003e572 cm²\u003c\/strong\u003e, the largest in the Down Fire series. The RS-W12 ships as the \u003cstrong\u003eRS-W12D2\u003c\/strong\u003e, dual 2 ohm, or the \u003cstrong\u003eRS-W12D4\u003c\/strong\u003e, dual 4 ohm. Both are rated 600 watts RMS and 1800 watts peak with 20mm of one way linear excursion and 54mm of peak to peak mechanical travel. The motor is a high-grade neodymium design driving a 4 inch high-temperature USA-wound voice coil, with Alpine's DD Linear dual magnetic gap for low distortion at high excursion, a vented coil former for airflow, and motor cooling fins that pull heat off the coil. The frame is die-cast aluminum with a black anodized threaded rear mounting frame and an aluminum dust cap.\u003c\/p\u003e\n\u003cp\u003eFree air resonance is \u003cstrong\u003e28.0 Hz\u003c\/strong\u003e, and the motor's efficiency bandwidth product lands at 24.3 to 24.8 depending on coil. Anything under 50 is a motor that wants a sealed load, which is why this is a sealed build and not a ported one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.70 cubic feet net\u003c\/strong\u003e out of a 0.753 cubic foot gross cavity. That sits between Alpine's small and medium sealed recommendations, which puts the \u003cstrong\u003eF3 in the low 30 Hz range\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eThe two coil variants land close together in this box but not on top of each other. The \u003cstrong\u003eDual 2-Ohm\u003c\/strong\u003e has a Qts of 0.980 and a 42.04 litre Vas; in 0.70 cubic feet it reaches Qtc 1.73, resonance lifted to 49 Hz, half power at 33.9 Hz. The \u003cstrong\u003eDual 4-Ohm\u003c\/strong\u003e has a Qts of 1.003 and a 43.84 litre Vas; it reaches Qtc 1.80, resonance at 52 Hz, half power at 35.4 Hz. Both figures are anechoic, taken before any cabin gain.\u003c\/p\u003e\n\u003cp\u003eAlpine's published sealed range runs 0.6 to 1.5 cubic feet: 0.60 net gives 35 Hz, 0.90 net gives 30.5 Hz, 1.20 net gives 29 Hz. We build 0.70 because it is what holds the cabinet at 5.75 inches while still reaching into the low 30s. Firing down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, and in-car response extends well below the published figure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. A perimeter cross-brace ties the long spans together, which matters more here than anywhere else in the line because a 295mm hole in a 30 inch panel takes a lot of material out of the baffle. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance. Mounting is into 8\/32 threaded inserts with stainless machine screws included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor. One cup, and both coil variants are dual voice coil, so final impedance is set at the driver.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eLargest Cone Area\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e572 cm²\u003c\/strong\u003e of piston in a cabinet measuring \u003cstrong\u003e30 in W x 15 in D x 5.75 in H\u003c\/strong\u003e in the down fire position, with no standoffs underneath. Polyfill is pre-installed and the shell is wrapped in plush black carpet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eAlpine rates the RS-W12 at \u003cstrong\u003e600 watts RMS\u003c\/strong\u003e and 1800 watts peak. Target 500 to 600 watts RMS on the amplifier. In this volume the cone does not run out of travel first: it reaches its 20.0mm one way limit at roughly 1340 to 1341 watts depending on coil, reached first around 48 Hz, far above what the driver can absorb thermally. The voice coil gives up before the suspension does.\u003c\/p\u003e\n\u003cp\u003eA subsonic filter at 25 Hz, 24 dB per octave, stops the cone wasting travel below the passband and moves that same 20.0mm limit out to about 1347 to 1352 watts. That is roughly 1 percent more amplifier for the price of one filter setting.\u003c\/p\u003e\n\u003cp\u003eBoth versions are dual voice coil, so you set your final impedance at the driver, and Alpine's application guide covers every wiring option for each. The enclosure carries a 1 year limited warranty. Bring your own RS-W12D2 or RS-W12D4; the driver is purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eThe cutout, the internal height and the 0.70 cubic feet all come from one driver's published numbers. Machined on our ShopSabre routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540232106073,"sku":"PO 12-S DF RSW","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SDFRSWFront.jpg?v=1787371561"},{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-alpine-rs-w-shallow","title":"Performance Optimized Down Fire Sealed Dual 10\" Enclosure | Alpine RSW10","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 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14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#3d2412;color:#e8b98d}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(184,115,51,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Dual 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of Alpine RS-W10 Shallows\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.004 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.004\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net total\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.49\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, D2\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e32.9-34.1 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e7.4375 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the Alpine RS-W10's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the Alpine RS-W10\u003c\/h3\u003e\n\u003cp\u003eTwo chambers, two drivers, one cabinet \u003cstrong\u003e7.4375 inches tall\u003c\/strong\u003e on a 30 by 15 inch footprint. Each baffle is bored to the RS-W10's \u003cstrong\u003e9-5\/8 inch, 243mm cutout\u003c\/strong\u003e, and both positions get the same alignment the single driver Down Fire cabinet uses. Against one RS-W10 in that same alignment, the pair delivers roughly 6 dB more maximum output with \u003cstrong\u003e760 cm²\u003c\/strong\u003e of total cone area.\u003c\/p\u003e\n\u003cp\u003eEach driver ships as the \u003cstrong\u003eRS-W10D2\u003c\/strong\u003e, dual 2 ohm, or the \u003cstrong\u003eRS-W10D4\u003c\/strong\u003e, dual 4 ohm, rated 600 watts RMS and 1800 watts peak with 20mm of one way linear excursion and 54mm of peak to peak mechanical travel. The motor is a high-grade neodymium design driving a 4 inch high-temperature USA-wound voice coil, with Alpine's DD Linear dual magnetic gap for low distortion at high excursion, a vented coil former, and motor cooling fins. Frames are die-cast aluminum with black anodized threaded rear mounting frames and aluminum dust caps.\u003c\/p\u003e\n\u003cp\u003eNeodymium is what keeps a dual cabinet this short. Two conventional ferrite 10s in separate chambers would need considerably more height for the same net volume per driver. At Alpine's published \u003cstrong\u003e0.04 cubic feet\u003c\/strong\u003e displaced each, these two drivers together take up less internal room than a single ferrite 10 typically does. Free air resonance is 30.0 Hz and efficiency bandwidth product runs 18.7 to 27.0 depending on coil, comfortably inside the range that calls for a sealed load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eTotal internal gross volume is 1.084 cubic feet, split by the divider into two chambers. After Alpine's published 0.04 cubic feet of displacement per driver, that leaves \u003cstrong\u003e0.50 cubic feet net per chamber\u003c\/strong\u003e and \u003cstrong\u003e1.004 cubic feet net total\u003c\/strong\u003e. The per chamber figure is the number that matters acoustically: each driver only ever sees its own 0.50, which is Alpine's small-volume sealed target exactly, where Alpine publishes an \u003cstrong\u003eF3 of 32 Hz\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eBoth coil variants are worth stating because the enclosure ships without drivers. In 0.50 cubic feet the \u003cstrong\u003eDual 2-Ohm\u003c\/strong\u003e, Qts 0.950 against a 20.64 litre Vas, lands at Qtc 1.49 with resonance lifted to 47 Hz and half power at 32.9 Hz. The \u003cstrong\u003eDual 4-Ohm\u003c\/strong\u003e, Qts 1.190 against a 23.35 litre Vas, lands at Qtc 1.94 with resonance at 50 Hz and half power at 34.1 Hz. Both are anechoic figures, before any cabin gain. Alpine's published sealed range runs 0.45 to 1.0 cubic feet per driver; we build 0.50 because it is what holds the cabinet under 7.5 inches.\u003c\/p\u003e\n\u003cp\u003eFiring down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, and in-car response extends well below the published figure. Wire both drivers identically so both chambers stay matched.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Perimeter cross-bracing ties the long spans together. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eBoth front baffles are \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so each driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance per chamber. Two sets of 8\/32 threaded inserts with stainless machine screws included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne shared Proline X ABS and carbon fiber composite cup with stainless hardware, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e to both driver positions. Side mounted so it stays accessible with the baffles facing the floor. Each driver is dual voice coil, so final impedance is set at the drivers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA bonded full height \u003cstrong\u003e3\/4 inch MDF divider\u003c\/strong\u003e gives each driver its own sealed airspace. Two drivers sharing one volume interact acoustically, each cone's compression phase becoming the other's pressure environment, which smears transients and blurs the alignment. Separate chambers eliminate that. Polyfill is pre-installed in each chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eAlpine rates each RS-W10 at \u003cstrong\u003e600 watts RMS\u003c\/strong\u003e and 1800 watts peak, so the pair takes 1200 watts RMS combined. Target 500 to 600 watts RMS per driver. In a 0.50 cubic foot chamber the cone reaches its 20.0mm one way limit somewhere between 998 and 1011 watts depending on coil, well above what the driver can absorb thermally, so the voice coil gives up before the suspension does.\u003c\/p\u003e\n\u003cp\u003eA subsonic filter at 25 Hz, 24 dB per octave, stops the cone wasting travel below the passband and moves that same 20.0mm limit out to roughly 1005 to 1028 watts. That is about 1 percent more amplifier for the price of one filter setting.\u003c\/p\u003e\n\u003cp\u003eBoth versions are dual voice coil, so you set your final impedance at the drivers, and Alpine's application guide covers every wiring option. The enclosure carries a 1 year limited warranty. Bring your own pair of RS-W10D2 or RS-W10D4; the drivers are purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eTwo chambers machined to one driver's published numbers rather than one big box split down the middle by eye. Cut on our ShopSabre routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540239904857,"sku":"PO 10D-S DF RSW","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10D-SDFRSWFront.jpg?v=1787372527"},{"product_id":"performance-optimized-down-fire-sealed-dual-12-enclosure-alpine-rs-w-shallow","title":"Performance Optimized Down Fire Sealed Dual 12\" Enclosure | Alpine RSW12","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 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10px}.df-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}.df-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#a8a29e}.df-sw{width:22px;height:3px;border-radius:2px;display:inline-block}.df-note{background:#292524;border:1px solid #44403c;border-radius:8px;padding:14px 16px;margin-top:10px}.df-note p{margin:0;color:#d6d3d1;font-size:13.5px;line-height:1.6}.df-link{color:#d99058;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 100%);padding:40px 36px;text-align:center;color:#fff}.df-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}.df-tier{overflow-x:auto;margin:18px 0;border:1px solid #44403c;border-radius:8px}.df-tier table{width:100%;border-collapse:collapse;min-width:660px}.df-tier th{background:#0c0a09;color:#a8a29e;font-size:.74em;text-transform:uppercase;letter-spacing:.6px;padding:12px 14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#3d2412;color:#e8b98d}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(184,115,51,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire Dual 12\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of Alpine RS-W12 Shallows\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.402 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.402\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net total\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.73\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, D2\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e33.9-35.4 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e9.4375 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the Alpine RS-W12's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the Alpine RS-W12\u003c\/h3\u003e\n\u003cp\u003eTwo full 12s in a cabinet \u003cstrong\u003e9.4375 inches tall\u003c\/strong\u003e on a 30 by 15 inch footprint, shorter than most dual 10 enclosures. Each baffle is bored to the RS-W12's \u003cstrong\u003e11-5\/8 inch, 295mm cutout\u003c\/strong\u003e, and each driver gets the same alignment the single driver Down Fire cabinet uses. Against one RS-W12 in that alignment, the pair delivers roughly 6 dB more maximum output.\u003c\/p\u003e\n\u003cp\u003eCone area is \u003cstrong\u003e572 cm²\u003c\/strong\u003e per driver and \u003cstrong\u003e1144 cm²\u003c\/strong\u003e across the pair, the most in the Proline X Down Fire line. Each RS-W12 ships as the \u003cstrong\u003eRS-W12D2\u003c\/strong\u003e, dual 2 ohm, or the \u003cstrong\u003eRS-W12D4\u003c\/strong\u003e, dual 4 ohm, rated 600 watts RMS and 1800 watts peak with 20mm of one way linear excursion and 54mm of peak to peak mechanical travel. The motor is a high-grade neodymium design driving a 4 inch high-temperature USA-wound voice coil, with Alpine's DD Linear dual magnetic gap for low distortion at high excursion, a vented coil former, and motor cooling fins. Frames are die-cast aluminum with black anodized threaded rear mounting frames and aluminum dust caps.\u003c\/p\u003e\n\u003cp\u003eNeodymium is what makes a dual 12 cabinet this size practical. A pair of conventional ferrite 12s in separate chambers would demand substantially more height for the same net volume per driver. At Alpine's published \u003cstrong\u003e0.05 cubic feet\u003c\/strong\u003e displaced each, both drivers together consume less internal volume than a single conventional 12 typically does. Free air resonance is 28.0 Hz and efficiency bandwidth product runs 24.3 to 24.8 depending on coil, well inside the range that calls for a sealed load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eTotal internal gross volume is 1.502 cubic feet, split by the divider into two chambers. After Alpine's published 0.05 cubic feet of displacement per driver, that leaves \u003cstrong\u003e0.70 cubic feet net per chamber\u003c\/strong\u003e and \u003cstrong\u003e1.402 cubic feet net total\u003c\/strong\u003e. The per chamber number is the one that governs the sound: each driver only ever sees its own 0.70, which sits between Alpine's small and medium sealed recommendations and puts the \u003cstrong\u003eF3 in the low 30 Hz range\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eBoth coil variants are worth stating because the enclosure ships without drivers. In 0.70 cubic feet the \u003cstrong\u003eDual 2-Ohm\u003c\/strong\u003e, Qts 0.980 against a 42.04 litre Vas, reaches Qtc 1.73 with resonance lifted to 49 Hz and half power at 33.9 Hz. The \u003cstrong\u003eDual 4-Ohm\u003c\/strong\u003e, Qts 1.003 against a 43.84 litre Vas, reaches Qtc 1.80 with resonance at 52 Hz and half power at 35.4 Hz. They land close together here, closer than the 10 inch pair does, and both figures are anechoic, before any cabin gain.\u003c\/p\u003e\n\u003cp\u003eAlpine's published sealed range runs 0.6 to 1.5 cubic feet per driver: 0.60 net gives 35 Hz, 0.90 net gives 30.5 Hz, 1.20 net gives 29 Hz. We build 0.70 per chamber because it is what holds a dual 12 under 9.5 inches while still reaching into the low 30s. Firing down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, and in-car response extends well below the published figure. Wire both drivers identically so both chambers stay matched.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Perimeter cross-bracing ties the long spans together, which earns its keep on a baffle carrying two 295mm openings. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eBoth front baffles are \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so each driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance per chamber. Two sets of 8\/32 threaded inserts with stainless machine screws included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne shared Proline X ABS and carbon fiber composite cup with stainless hardware, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e to both driver positions. Side mounted so it stays accessible with the baffles facing the floor. Each driver is dual voice coil, so final impedance is set at the drivers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA bonded full height \u003cstrong\u003e3\/4 inch MDF divider\u003c\/strong\u003e gives each driver its own sealed airspace. Two drivers sharing one volume interact acoustically, each cone's compression phase becoming the other's pressure environment, which smears transients and blurs the alignment. Separate chambers eliminate that. Polyfill is pre-installed in each chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eAlpine rates each RS-W12 at \u003cstrong\u003e600 watts RMS\u003c\/strong\u003e and 1800 watts peak, so the pair takes 1200 watts RMS combined. Target 500 to 600 watts RMS per driver. In a 0.70 cubic foot chamber the cone reaches its 20.0mm one way limit at roughly 1340 to 1341 watts depending on coil, reached first around 48 Hz, far above what the driver can absorb thermally. The voice coil gives up before the suspension does.\u003c\/p\u003e\n\u003cp\u003eA subsonic filter at 25 Hz, 24 dB per octave, stops the cone wasting travel below the passband and moves that same 20.0mm limit out to about 1347 to 1352 watts. That is roughly 1 percent more amplifier for the price of one filter setting.\u003c\/p\u003e\n\u003cp\u003eBoth versions are dual voice coil, so you set your final impedance at the drivers, and Alpine's application guide covers every wiring option. The enclosure carries a 1 year limited warranty. Bring your own pair of RS-W12D2 or RS-W12D4; the drivers are purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eTwo chambers, each machined to one driver's published numbers rather than one large box split down the middle by eye. Cut on our ShopSabre routers and built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540240461913,"sku":"PO 12D-S DF RSW","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12D-SDFRSWFront.jpg?v=1787372235"},{"product_id":"performance-optimized-wedge-sealed-10-enclosure-alpine-s2-w10","title":"Performance Optimized Wedge Sealed 10\" Enclosure | Alpine S2-W10","description":"\u003cdiv class=\"po-wrap\"\u003e\n\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine S2-W10\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e10\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.58 ft3 Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.63 ft3 Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.65\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e19.26\" x 13\" x 6.37\/11.10\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine S2-W10 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAlpine's S-Series 10 inch subwoofer. Dual voice coil, 600 W RMS and 1800 W peak, 15 mm one-way linear excursion on a 2.6 in voice coil and a 64 oz motor, rated 25 Hz to 215 Hz. Available as the S2-W10D4 and the S2-W10D2, and this cabinet is cut for either.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.63 cu ft gross produces 0.58 cu ft net after the driver's 0.05 cu ft displacement. That is Alpine's own stated ideal, the middle of their 0.45 to 0.90 cu ft recommended range.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe Alpine S2-W10 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches the roughly 20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cone firing rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eThe trunk acts as an acoustic extension for a smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eThe wedge tucks against the seat back and the space in front of it stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine S2-W10\u003c\/h2\u003e\n\u003cp\u003e0.58 cubic feet net produces a tight, well damped alignment on both coils, calculated from Alpine's published T\/S parameters. This is Alpine's own recommended sealed volume, not a number we picked.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eS2-W10D4 Qtc 0.650 · S2-W10D2 Qtc 0.647 · fc 49.1 to 50.8 Hz · F3 54.1 to 55.6 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 9.13 in (232 mm), Alpine spec. Driver mounting depth required 4.53 in against 4.53 in available. Threaded inserts pressed into the baffle backside at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4 in MDF throughout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC cut V-grooves at every panel intersection, sides and brace seated in dados.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4 in MDF sheets at the driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite, 12 gauge OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Alpine S2-W10 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe S2-W10D4 carries dual 4 ohm coils: wire them in series for 8 ohms or in parallel for 2 ohms. The S2-W10D2 is the dual 2 ohm version, giving 4 ohms in series or 1 ohm in parallel, and 1 ohm is a load many amplifiers will not survive. Alpine's 8 AWG push terminals and voice coil jumpers let you make the change right at the driver. Target 600 W RMS at the final impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet. 1 year limited warranty. Enclosure only, the Alpine S2-W10 driver is purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine S2-W10: A tight, well damped alignment in a Rear-Firing Wedge\u003c\/h2\u003e\n\u003cp\u003e0.58 cubic feet net at Qtc 0.65, cut direct fit and built to order in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44589688422489,"sku":"PO 10-S W S2 BB","price":259.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871136857,"sku":"PO 10-S W S2 B","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO10-SWS2Front.jpg?v=1788019190"},{"product_id":"performance-optimized-wedge-sealed-dual-10-enclosure-alpine-s2-w10","title":"Performance Optimized Wedge Sealed Dual 10\" Enclosure | Alpine S2-W10","description":"\u003cdiv class=\"po-wrap\"\u003e\n\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine S2-W10\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 10\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.58 ft3 Net Per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.63 ft3 Gross Per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.65\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e31.54\" x 15\" x 5.97\/11.43\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine S2-W10 in a Dual-Driver Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAlpine's S-Series 10 inch subwoofer. Dual voice coil, 600 W RMS and 1800 W peak, 15 mm one-way linear excursion on a 2.6 in voice coil and a 64 oz motor, rated 25 Hz to 215 Hz. Available as the S2-W10D4 and the S2-W10D2, and this cabinet is cut for either.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.63 cu ft gross per chamber produces 0.58 cu ft net after the driver's 0.05 cu ft displacement. That is Alpine's own stated ideal, the middle of their 0.45 to 0.90 cu ft recommended range.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eA full divider runs floor to ceiling and front to back, giving each driver its own sealed 0.63 cu ft chamber. Neither cone loads against the other, so the pair stays predictable under hard excursion instead of modulating each other's air load. Both chambers are cut to the same volume as the single driver version of this cabinet, so the alignment is identical whichever you buy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe Alpine S2-W10 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches the roughly 20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cone firing rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eThe trunk acts as an acoustic extension for a smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eThe wedge tucks against the seat back and the space in front of it stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine S2-W10\u003c\/h2\u003e\n\u003cp\u003e0.58 cubic feet net per driver produces a tight, well damped alignment on both coils, calculated from Alpine's published T\/S parameters. This is Alpine's own recommended sealed volume, not a number we picked.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eS2-W10D4 Qtc 0.650 · S2-W10D2 Qtc 0.647 · fc 49.1 to 50.8 Hz · F3 54.1 to 55.6 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 9.13 in (232 mm), Alpine spec. Driver mounting depth required 4.53 in against 4.53 in available. Threaded inserts pressed into the baffle backside at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4 in MDF throughout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC cut V-grooves at every panel intersection, sides and divider seated in dados.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4 in MDF sheets at the driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite, 12 gauge OFC pre-wired to both driver positions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Alpine S2-W10 Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eEach S2-W10D4 carries dual 4 ohm coils, so a matched pair gives you four coils to work with. All four in parallel is 1 ohm, which many amplifiers are not stable into. Coils paralleled per driver with the drivers in series, or coils in series per driver with the drivers in parallel, both land at 4 ohms and that is the sensible target. Alpine's 8 AWG push terminals and voice coil jumpers let you make the change at the driver. Aim for 600 to 1200 W RMS total at the final impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet. 1 year limited warranty. Enclosure only, the Alpine S2-W10 drivers are purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine S2-W10 Dual: A tight, well damped alignment in a Rear-Firing Wedge\u003c\/h2\u003e\n\u003cp\u003e0.58 cubic feet net per driver at Qtc 0.65, cut direct fit and built to order in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44589688455257,"sku":"PO 10D-S W S2 BB","price":319.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589872414809,"sku":"PO 10D-S W S2 B","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_1e15a022-d273-418f-87ca-4ba5d27fe70a.jpg?v=1787958629"},{"product_id":"performance-optimized-wedge-sealed-12-enclosure-alpine-s2-w12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Alpine S2-W12","description":"\u003cdiv class=\"po-wrap\"\u003e\n\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine S2-W12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003e12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.85 ft3 Net\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.91 ft3 Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.78\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e21.97\" x 15\" x 6.32\/11.78\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine S2-W12 in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAlpine's S-Series 12 inch subwoofer. Dual voice coil, 600 W RMS and 1800 W peak, 15 mm one-way linear excursion on a 2.6 in voice coil and a 64 oz motor, rated 22 Hz to 200 Hz. Available as the S2-W12D4 and the S2-W12D2, and this cabinet is cut for either.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.91 cu ft gross produces 0.85 cu ft net after the driver's 0.06 cu ft displacement. That is Alpine's own stated ideal, the middle of their 0.61 to 1.06 cu ft recommended range.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe Alpine S2-W12 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches the roughly 20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cone firing rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eThe trunk acts as an acoustic extension for a smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eThe wedge tucks against the seat back and the space in front of it stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine S2-W12\u003c\/h2\u003e\n\u003cp\u003e0.85 cubic feet net produces a musical alignment on both coils, calculated from Alpine's published T\/S parameters. This is Alpine's own recommended sealed volume, not a number we picked.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eS2-W12D4 Qtc 0.780 · S2-W12D2 Qtc 0.780 · fc 48.2 to 51.0 Hz · F3 44.2 to 46.7 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 10.75 in (273 mm), Alpine spec. Driver mounting depth required 4.88 in against 4.88 in available. Threaded inserts pressed into the baffle backside at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4 in MDF throughout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC cut V-grooves at every panel intersection, sides and brace seated in dados.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4 in MDF sheets at the driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite, 12 gauge OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Alpine S2-W12 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe S2-W12D4 carries dual 4 ohm coils: wire them in series for 8 ohms or in parallel for 2 ohms. The S2-W12D2 is the dual 2 ohm version, giving 4 ohms in series or 1 ohm in parallel, and 1 ohm is a load many amplifiers will not survive. Alpine's 8 AWG push terminals and voice coil jumpers let you make the change right at the driver. Target 600 W RMS at the final impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet. 1 year limited warranty. Enclosure only, the Alpine S2-W12 driver is purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine S2-W12: A musical alignment in a Rear-Firing Wedge\u003c\/h2\u003e\n\u003cp\u003e0.85 cubic feet net at Qtc 0.78, cut direct fit and built to order in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44589688488025,"sku":"PO 12-S W S2 BB","price":289.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589871530073,"sku":"PO 12-S W S2 B","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWS2Front.jpg?v=1788019681"},{"product_id":"performance-optimized-wedge-sealed-dual-12-enclosure-alpine-s2-w12","title":"Performance Optimized Wedge Sealed Dual 12\" Enclosure | Alpine S2-W12","description":"\u003cdiv class=\"po-wrap\"\u003e\n\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Alpine S2-W12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.85 ft3 Net Per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.91 ft3 Gross Per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.78\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e32.00\" x 16\" x 7.63\/13.46\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThe Alpine S2-W12 in a Dual-Driver Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAlpine's S-Series 12 inch subwoofer. Dual voice coil, 600 W RMS and 1800 W peak, 15 mm one-way linear excursion on a 2.6 in voice coil and a 64 oz motor, rated 22 Hz to 200 Hz. Available as the S2-W12D4 and the S2-W12D2, and this cabinet is cut for either.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.91 cu ft gross per chamber produces 0.85 cu ft net after the driver's 0.06 cu ft displacement. That is Alpine's own stated ideal, the middle of their 0.61 to 1.06 cu ft recommended range.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eA full divider runs floor to ceiling and front to back, giving each driver its own sealed 0.91 cu ft chamber. Neither cone loads against the other, so the pair stays predictable under hard excursion instead of modulating each other's air load. Both chambers are cut to the same volume as the single driver version of this cabinet, so the alignment is identical whichever you buy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe Alpine S2-W12 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches the roughly 20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cone firing rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eThe trunk acts as an acoustic extension for a smoother presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eThe wedge tucks against the seat back and the space in front of it stays usable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Alpine S2-W12\u003c\/h2\u003e\n\u003cp\u003e0.85 cubic feet net per driver produces a musical alignment on both coils, calculated from Alpine's published T\/S parameters. This is Alpine's own recommended sealed volume, not a number we picked.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eS2-W12D4 Qtc 0.780 · S2-W12D2 Qtc 0.780 · fc 48.2 to 51.0 Hz · F3 44.2 to 46.7 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 10.75 in (273 mm), Alpine spec. Driver mounting depth required 4.88 in against 6.39 in available. Threaded inserts pressed into the baffle backside at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4 in MDF throughout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC cut V-grooves at every panel intersection, sides and divider seated in dados.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4 in MDF sheets at the driver face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite, 12 gauge OFC pre-wired to both driver positions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Alpine S2-W12 Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eEach S2-W12D4 carries dual 4 ohm coils, so a matched pair gives you four coils to work with. All four in parallel is 1 ohm, which many amplifiers are not stable into. Coils paralleled per driver with the drivers in series, or coils in series per driver with the drivers in parallel, both land at 4 ohms and that is the sensible target. Alpine's 8 AWG push terminals and voice coil jumpers let you make the change at the driver. Aim for 600 to 1200 W RMS total at the final impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet. 1 year limited warranty. Enclosure only, the Alpine S2-W12 drivers are purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAlpine S2-W12 Dual: A musical alignment in a Rear-Firing Wedge\u003c\/h2\u003e\n\u003cp\u003e0.85 cubic feet net per driver at Qtc 0.78, cut direct fit and built to order in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44589688520793,"sku":"PO 12D-S W S2 BB","price":369.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44589872513113,"sku":"PO 12D-S W S2 B","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_6a23a614-b74d-4dbe-b4e3-037deb2b8191.jpg?v=1787958640"},{"product_id":"performance-optimized-wedge-ported-12-enclosure-alpine-s2-w12","title":"Alpine S2-W12 Ported 12\" Wedge Enclosure | Proline X","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 12px;color:#fff}.df-hero p{font-size:1.1em;font-weight:300;opacity:.93;margin:0 0 22px;color:#d6d3d1}.df-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}.df-badge{background:rgba(91,120,255,.18);border:1px solid #5b78ff;color:#99abff;padding:7px 16px;border-radius:18px;font-size:.8em;font-weight:600}.df-stats{display:flex;flex-wrap:wrap;background:#1c1917}.df-stat{flex:1 1 200px;text-align:center;padding:26px 16px;border-right:1px solid #292524;border-bottom:1px solid #292524}.df-stat .n{display:block;font-size:1.6em;font-weight:800;color:#7089ff}.df-stat 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10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}.df-tier{overflow-x:auto;margin:18px 0;border:1px solid #44403c;border-radius:8px}.df-tier table{width:100%;border-collapse:collapse;min-width:660px}.df-tier th{background:#0c0a09;color:#a8a29e;font-size:.74em;text-transform:uppercase;letter-spacing:.6px;padding:12px 14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#001264;color:#99abff}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(91,120,255,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProline X Performance Optimized Wedge 12\" Ported\u003c\/h2\u003e\n  \u003cp\u003eAlpine's S2-W12 vented at 35 Hz in a 13.5 inch deep wedge, 1.31 cubic feet and 1.52 dB of ripple\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e1.31 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 35.0 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eF3 33.9 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eSide slot port\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the Alpine S2-W12\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-stats\"\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.31\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e35.0\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz tuning\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e33.9\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz F3 anechoic\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e18.4\u003c\/span\u003e\u003cspan class=\"l\"\u003esq in port area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 35.0 Hz\u003c\/h3\u003e\n  \u003cp\u003eThe S2-W12D4 is a 28.8 Hz motor with a 0.44 Qts, 51.5 litres of Vas and 600 watts, and the wedge gives it 1.31 cubic feet net vented at 35 Hz through an 18.4 square inch port. The cabinet is 30 inches wide, 15.5 tall, 7.88 inches at the top and 13.52 at the base, a shallow cabinet for a twelve.\u003c\/p\u003e\n  \u003cp\u003eA 0.44 Qts on 51.5 litres reaches below its resonance in a modest box: F3 33.9 Hz anechoic on 1.52 dB of ripple, and 2.82 dB of in-car spread across 25 to 60 Hz at 35 Hz tuning. The D2 coil, with its 26.6 Hz Fs and 55.1 litres, solves to the same cabinet at 34.5 Hz and reads 2.93 in the car, so one box serves both. The port takes 23.91 of the 25.43 inches available and runs at 22.1 metres per second in the channel against a 22.6 limit, 13.7 at the rounded mouth.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eTrunk-load wedge, explained\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThe 20 degree face is the seat side\u003c\/h4\u003e\n\u003cp\u003eA factory rear seat back\n    leans about 20 degrees off vertical. The wedge's raked rear panel matches that lean and tucks\n    against it, so the cabinet uses the triangle of trunk floor a square box wastes.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThe driver fires rearward\u003c\/h4\u003e\n\u003cp\u003eThe baffle stays vertical and faces\n    the trunk opening. The trunk acts as the acoustic extension into the cabin; nothing about\n    the driver is angled.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003e13.52 inches at the base, 7.88 at the top\u003c\/h4\u003e\n\u003cp\u003eA 4.88 inch mounting depth is what makes this cabinet shallow. The port panel needs 7.08 inches of top depth to seat a 6.25 inch leg, against 6.22 for the magnet alone, and the base lands at 13.52, two inches under the 15.5 inch height. 4.27 inches of flat floor stay clear in front of the panel.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003e30.00 inches wide\u003c\/h4\u003e\n\u003cp\u003eWidth is the wedge's free dimension and it\n    buys two things at once here: airspace, and port length, because the port runs the full\n    width of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe port is the product\u003c\/h3\u003e\n  \u003cp\u003eThe port is a triangular slot in the bottom-rear corner. The floor and the raked back wall\n  are two of its three sides; the third is a single panel bevelled to sit flush against both.\n  It runs across the cabinet, opens into the box at the far end and exits through the side\n  panel: a straight run with no bend, 23.91 inches of centreline path.\u003c\/p\u003e\n  \u003cp\u003eThe channel is an isosceles triangle with 6.25 inch legs, 18.4 square inches, running at\n  22.1 metres per second at the tuning frequency. The mouth is that same triangle cut through\n  the side panel with its three edges rounded over at 1\/2 inch, so the opening at the face is\n  29.5 square inches and air leaves it at 13.7 metres per second, against the 17.0 metre per\n  second threshold where a slot port starts to chuff. The panel's throat end carries a 3\/8 inch\n  roundover for the same reason.\u003c\/p\u003e\n  \u003cdiv class=\"df-highlight\"\u003e\n    \u003cp\u003e\u003cstrong\u003eThis enclosure ships dry.\u003c\/strong\u003e Polyfill goes in every sealed Proline X cabinet\n    we build. It does not go in this one. Damping material changes the effective volume the\n    port is tuned against, which moves the tuning away from the 35.0 Hz the port was cut for.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eRun a subsonic filter\u003c\/h3\u003e\n  \u003cp\u003eBelow tuning the port stops loading the cone and excursion climbs without limit toward DC,\n  so a 28 Hz high-pass at 24 dB per octave is part of the specification. Set it and the same\n  cabinet takes substantially more power for the same cone travel.\u003c\/p\u003e\n  \u003cp\u003eEvery wattage on the Performance Graphs tab is a mechanical limit, the power at which the\n  cone reaches the end of its linear travel in this box. What the voice coil can dissipate as\n  heat is a separate ceiling set by Alpine.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eCut for this driver, not for a catalogue\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eMounting\u003c\/h4\u003e\n\u003cp\u003eCut to Alpine's published 10.750 inch cutout through a\n    double-layer 1.5 inch baffle, with a cosmetic front layer routed for the acrylic insert.\n    Threaded inserts at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eClearance\u003c\/h4\u003e\n\u003cp\u003eAlpine publish 15 mm of linear excursion without stating the basis, so it is taken as printed; the cone uses 7.6 of it at 600 watts with the subsonic filter set. The channel runs 0.5 metres per second under its limit. Alpine publish a sealed range only for the S2 (0.61 to 1.06 cubic feet) and no vented box; we also build this driver as a 0.85 cubic foot sealed wedge, Alpine's recommended volume, and the graphs tab compares the two.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eBraced\u003c\/h4\u003e\n\u003cp\u003eTwo windowed C braces run the cabinet profile at the third points of the width and seat on the port panel; the windows keep the cavity one chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eJoinery\u003c\/h4\u003e\n\u003cp\u003eV-groove and dado throughout, 0.75 inch Langboard\n    Elite MDF, the shell folded from one strip with the sides dropped into dados and the port\n    panel seated in dados of its own.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003ePower, wiring and warranty\u003c\/h3\u003e\n  \u003cp\u003eAlpine rate the S2-W12 at 600 W RMS. Terminal cup is side mounted on the side opposite the port\n  mouth. A dual 2 ohm driver wired parallel presents 1 ohm, which many amplifiers are not\n  stable into; series at 4 ohm is the safe default unless yours is rated for it.\u003c\/p\u003e\n  \u003cp\u003ePerformance Optimized carries a 1-year warranty. Built to order in Tullahoma, Tennessee. The\n  driver is not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-cta\"\u003e\n  \u003cp\u003eCut, folded and finished for the Alpine S2-W12. The alignment, the port geometry and the power\n  figures all come from Alpine's published parameters run through our own solver.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44822725820505,"sku":"PO 12-P W S2 BB","price":399.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44822725853273,"sku":"PO 12-P W S2 B","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO_12-P_W_S2_Front.jpg?v=1788442074"},{"product_id":"performance-optimized-wedge-ported-12-enclosure-alpine-r2-w12","title":"Alpine R2-W12 Ported 12\" Wedge Enclosure | Proline X","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:54px 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10px}.df-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}.df-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#a8a29e}.df-sw{width:22px;height:3px;border-radius:2px;display:inline-block}.df-note{background:#292524;border:1px solid #44403c;border-radius:8px;padding:14px 16px;margin-top:10px}.df-note p{margin:0;color:#d6d3d1;font-size:13.5px;line-height:1.6}.df-link{color:#7089ff;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:40px 36px;text-align:center;color:#fff}.df-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}.df-tier{overflow-x:auto;margin:18px 0;border:1px solid #44403c;border-radius:8px}.df-tier table{width:100%;border-collapse:collapse;min-width:660px}.df-tier th{background:#0c0a09;color:#a8a29e;font-size:.74em;text-transform:uppercase;letter-spacing:.6px;padding:12px 14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#001264;color:#99abff}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(91,120,255,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProline X Performance Optimized Wedge 12\" Ported\u003c\/h2\u003e\n  \u003cp\u003eAlpine's R2-W12 vented at 35.5 Hz in 1.56 cubic feet, a 30.2 Hz reach on 750 watts\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e1.56 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 35.5 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eF3 30.2 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eSide slot port\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the Alpine R2-W12\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-stats\"\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.56\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e35.5\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz tuning\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e30.2\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz F3 anechoic\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e23.0\u003c\/span\u003e\u003cspan class=\"l\"\u003esq in port area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 35.5 Hz\u003c\/h3\u003e\n  \u003cp\u003eThe R2-W12D4 is a 30 Hz motor with a 0.51 Qts, 32.8 litres of Vas and 750 watts, and the wedge gives it 1.56 cubic feet net vented at 35.5 Hz through a 23.0 square inch port. Alpine's own vented box for this driver is 1.45 cubic feet at 36 Hz; this cabinet is the same alignment in a wedge. It is 30 inches wide, 15.5 tall, 9.50 inches at the top and 15.14 at the base.\u003c\/p\u003e\n  \u003cp\u003e35.5 Hz puts the anechoic F3 at 30.2 Hz on 3.49 dB of ripple, and Alpine's own tech sheet shows the same character in their box: 28 to 29 Hz F3 on 4.3 to 5.8 dB of ripple. In the car it spreads 4.73 dB across 25 to 60 Hz, over the 4 dB line the rest of the range holds; the S2-W12 in this line reads 2.82. The port takes 24.26 of the 25.10 inches available and runs at 24.0 metres per second in the channel against a 24.2 limit at 750 watts, 15.6 at the rounded mouth.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eTrunk-load wedge, explained\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThe 20 degree face is the seat side\u003c\/h4\u003e\n\u003cp\u003eA factory rear seat back\n    leans about 20 degrees off vertical. The wedge's raked rear panel matches that lean and tucks\n    against it, so the cabinet uses the triangle of trunk floor a square box wastes.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThe driver fires rearward\u003c\/h4\u003e\n\u003cp\u003eThe baffle stays vertical and faces\n    the trunk opening. The trunk acts as the acoustic extension into the cabin; nothing about\n    the driver is angled.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003e15.14 inches at the base, 9.50 at the top\u003c\/h4\u003e\n\u003cp\u003eThe port panel needs 9.45 inches of top depth to seat a 7.00 inch leg and clear the 6.50 inch motor, against 7.84 for the magnet alone, and the base lands at 15.14 under a 15.5 inch height. 5.14 inches of flat floor stay clear in front of the panel.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003e30.00 inches wide\u003c\/h4\u003e\n\u003cp\u003eWidth is the wedge's free dimension and it\n    buys two things at once here: airspace, and port length, because the port runs the full\n    width of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe port is the product\u003c\/h3\u003e\n  \u003cp\u003eThe port is a triangular slot in the bottom-rear corner. The floor and the raked back wall\n  are two of its three sides; the third is a single panel bevelled to sit flush against both.\n  It runs across the cabinet, opens into the box at the far end and exits through the side\n  panel: a straight run with no bend, 24.26 inches of centreline path.\u003c\/p\u003e\n  \u003cp\u003eThe channel is an isosceles triangle with 7.00 inch legs, 23.0 square inches, running at\n  24.0 metres per second at the tuning frequency. The mouth is that same triangle cut through\n  the side panel with its three edges rounded over at 1\/2 inch, so the opening at the face is\n  35.4 square inches and air leaves it at 15.6 metres per second, against the 17.0 metre per\n  second threshold where a slot port starts to chuff. The panel's throat end carries a 3\/8 inch\n  roundover for the same reason.\u003c\/p\u003e\n  \u003cdiv class=\"df-highlight\"\u003e\n    \u003cp\u003e\u003cstrong\u003eThis enclosure ships dry.\u003c\/strong\u003e Polyfill goes in every sealed Proline X cabinet\n    we build. It does not go in this one. Damping material changes the effective volume the\n    port is tuned against, which moves the tuning away from the 35.5 Hz the port was cut for.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eRun a subsonic filter\u003c\/h3\u003e\n  \u003cp\u003eBelow tuning the port stops loading the cone and excursion climbs without limit toward DC,\n  so a 28 Hz high-pass at 24 dB per octave is part of the specification. Set it and the same\n  cabinet takes substantially more power for the same cone travel.\u003c\/p\u003e\n  \u003cp\u003eEvery wattage on the Performance Graphs tab is a mechanical limit, the power at which the\n  cone reaches the end of its linear travel in this box. What the voice coil can dissipate as\n  heat is a separate ceiling set by Alpine.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eCut for this driver, not for a catalogue\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eMounting\u003c\/h4\u003e\n\u003cp\u003eCut to Alpine's published 10.880 inch cutout through a\n    double-layer 1.5 inch baffle, with a cosmetic front layer routed for the acrylic insert.\n    Threaded inserts at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eClearance\u003c\/h4\u003e\n\u003cp\u003eAlpine publish 20 mm of linear excursion without stating the basis, so it is taken as printed; the cone uses 8.3 of it at 750 watts with the subsonic filter set. The channel runs 0.2 metres per second under its limit at rated power, so the filter stays on. The D2 coil publishes a different Fs and Vas, 29 Hz and 36.9 litres, and reads 5.55 in the car in this same cabinet. We also build this driver as a 0.75 cubic foot sealed wedge, Alpine's recommended volume, and the graphs tab compares the two.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eBraced\u003c\/h4\u003e\n\u003cp\u003eTwo windowed C braces run the cabinet profile at the third points of the width and seat on the port panel; the windows keep the cavity one chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eJoinery\u003c\/h4\u003e\n\u003cp\u003eV-groove and dado throughout, 0.75 inch Langboard\n    Elite MDF, the shell folded from one strip with the sides dropped into dados and the port\n    panel seated in dados of its own.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003ePower, wiring and warranty\u003c\/h3\u003e\n  \u003cp\u003eAlpine rate the R2-W12 at 750 W RMS. Terminal cup is side mounted on the side opposite the port\n  mouth. A dual 2 ohm driver wired parallel presents 1 ohm, which many amplifiers are not\n  stable into; series at 4 ohm is the safe default unless yours is rated for it.\u003c\/p\u003e\n  \u003cp\u003ePerformance Optimized carries a 1-year warranty. Built to order in Tullahoma, Tennessee. The\n  driver is not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-cta\"\u003e\n  \u003cp\u003eCut, folded and finished for the Alpine R2-W12. The alignment, the port geometry and the power\n  figures all come from Alpine's published parameters run through our own solver.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44822763634777,"sku":"PO 12-P W R2W BB","price":399.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44822763733081,"sku":"PO 12-P W R2W B","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO_12-P_W_R2W_Front.jpg?v=1788444768"},{"product_id":"performance-optimized-wedge-ported-8-enclosure-alpine-s2-w8","title":"Alpine S2-W8 Ported 8\" Wedge Enclosure | Proline X","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#001a91 100%);padding:54px 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14px;text-align:left;border-bottom:1px solid #44403c;font-weight:700}.df-tier th.on{background:#001264;color:#99abff}.df-tier td{padding:11px 14px;border-bottom:1px solid #292524;color:#a8a29e;font-size:.88em;vertical-align:top;line-height:1.55}.df-tier td.a{color:#d6d3d1;font-weight:700;background:#1c1917;width:19%}.df-tier td.on{background:rgba(91,120,255,.10);color:#d6d3d1}.df-tier tr:last-child td{border-bottom:none}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProline X Performance Optimized Wedge 8\" Ported\u003c\/h2\u003e\n  \u003cp\u003eAlpine's S2-W8 vented at 37 Hz for a 31.6 Hz reach in 0.80 cubic feet, 0.98 dB of ripple\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e0.80 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 37.0 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eF3 31.6 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eSide slot port\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the Alpine S2-W8\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-stats\"\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.80\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e37.0\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz tuning\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e31.6\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz F3 anechoic\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e13.0\u003c\/span\u003e\u003cspan class=\"l\"\u003esq in port area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 37.0 Hz\u003c\/h3\u003e\n  \u003cp\u003eThe S2-W8D4 is a 47.9 Hz motor with a 0.64 Qts, 7.5 litres of Vas and 300 watts, and the wedge gives it 0.80 cubic feet net vented at 37 Hz through a 13.0 square inch port. The cabinet is 30 inches wide, 11.75 tall, 7.62 inches at the top and 11.90 at the base.\u003c\/p\u003e\n  \u003cp\u003eVenting a 48 Hz eight at 37 Hz gives it an anechoic F3 of 31.6 Hz on 0.98 dB of ripple, a flat passband, and the reach is all port: in the car it spreads 7.53 dB across 25 to 60 Hz, because the motor has stopped contributing well before cabin gain arrives. Alpine publish sealed volumes only for the S2 line. The port takes 25.66 of the 25.88 inches available and runs at 20.6 metres per second in the channel against a 20.9 limit, 11.9 at the rounded mouth.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eTrunk-load wedge, explained\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThe 20 degree face is the seat side\u003c\/h4\u003e\n\u003cp\u003eA factory rear seat back\n    leans about 20 degrees off vertical. The wedge's raked rear panel matches that lean and tucks\n    against it, so the cabinet uses the triangle of trunk floor a square box wastes.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThe driver fires rearward\u003c\/h4\u003e\n\u003cp\u003eThe baffle stays vertical and faces\n    the trunk opening. The trunk acts as the acoustic extension into the cabin; nothing about\n    the driver is angled.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003e11.90 inches at the base, 7.62 at the top\u003c\/h4\u003e\n\u003cp\u003eThe port panel needs 7.54 inches of top depth to seat a 5.25 inch leg and clear the 3.70 inch motor, against 5.79 for the magnet alone, and the base lands at 11.90, a little deeper than the 11.75 inch height. 3.65 inches of flat floor stay clear in front of the panel.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003e30.00 inches wide\u003c\/h4\u003e\n\u003cp\u003eWidth is the wedge's free dimension and it\n    buys two things at once here: airspace, and port length, because the port runs the full\n    width of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe port is the product\u003c\/h3\u003e\n  \u003cp\u003eThe port is a triangular slot in the bottom-rear corner. The floor and the raked back wall\n  are two of its three sides; the third is a single panel bevelled to sit flush against both.\n  It runs across the cabinet, opens into the box at the far end and exits through the side\n  panel: a straight run with no bend, 25.66 inches of centreline path.\u003c\/p\u003e\n  \u003cp\u003eThe channel is an isosceles triangle with 5.25 inch legs, 13.0 square inches, running at\n  20.6 metres per second at the tuning frequency. The mouth is that same triangle cut through\n  the side panel with its three edges rounded over at 1\/2 inch, so the opening at the face is\n  22.5 square inches and air leaves it at 11.9 metres per second, against the 17.0 metre per\n  second threshold where a slot port starts to chuff. The panel's throat end carries a 3\/8 inch\n  roundover for the same reason.\u003c\/p\u003e\n  \u003cdiv class=\"df-highlight\"\u003e\n    \u003cp\u003e\u003cstrong\u003eThis enclosure ships dry.\u003c\/strong\u003e Polyfill goes in every sealed Proline X cabinet\n    we build. It does not go in this one. Damping material changes the effective volume the\n    port is tuned against, which moves the tuning away from the 37.0 Hz the port was cut for.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eRun a subsonic filter\u003c\/h3\u003e\n  \u003cp\u003eBelow tuning the port stops loading the cone and excursion climbs without limit toward DC,\n  so a 29 Hz high-pass at 24 dB per octave is part of the specification. Set it and the same\n  cabinet takes substantially more power for the same cone travel.\u003c\/p\u003e\n  \u003cp\u003eEvery wattage on the Performance Graphs tab is a mechanical limit, the power at which the\n  cone reaches the end of its linear travel in this box. What the voice coil can dissipate as\n  heat is a separate ceiling set by Alpine.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eCut for this driver, not for a catalogue\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eMounting\u003c\/h4\u003e\n\u003cp\u003eCut to Alpine's published 7.010 inch cutout through a\n    double-layer 1.5 inch baffle, with a cosmetic front layer routed for the acrylic insert.\n    Threaded inserts at every mounting location.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eClearance\u003c\/h4\u003e\n\u003cp\u003eAlpine publish 13 mm of linear excursion without stating the basis, so it is taken as printed; the cone uses 9.0 of it at 300 watts with the subsonic filter set, 69 percent of the travel at rated power, so set the filter. The D2 coil, 46.5 Hz and 7.2 litres, reads 9.57 in the car in this same cabinet. 3.700 inches of mounting depth clears the panel.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eBraced\u003c\/h4\u003e\n\u003cp\u003eTwo windowed C braces run the cabinet profile at the third points of the width and seat on the port panel; the windows keep the cavity one chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eJoinery\u003c\/h4\u003e\n\u003cp\u003eV-groove and dado throughout, 0.75 inch Langboard\n    Elite MDF, the shell folded from one strip with the sides dropped into dados and the port\n    panel seated in dados of its own.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003ePower, wiring and warranty\u003c\/h3\u003e\n  \u003cp\u003eAlpine rate the S2-W8 at 300 W RMS. Terminal cup is side mounted on the side opposite the port\n  mouth. A dual 2 ohm driver wired parallel presents 1 ohm, which many amplifiers are not\n  stable into; series at 4 ohm is the safe default unless yours is rated for it.\u003c\/p\u003e\n  \u003cp\u003ePerformance Optimized carries a 1-year warranty. Built to order in Tullahoma, Tennessee. The\n  driver is not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-cta\"\u003e\n  \u003cp\u003eCut, folded and finished for the Alpine S2-W8. The alignment, the port geometry and the power\n  figures all come from Alpine's published parameters run through our own solver.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":44822763831385,"sku":"PO 8-P W S2 BB","price":329.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44822764027993,"sku":"PO 8-P W S2 B","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO_8-P_W_S2_Front.jpg?v=1788444777"},{"product_id":"2024-2026-ford-f-150-f-250-behind-seat-single-10-enclosure-loaded-with-alpine-rsw10","title":"2024-2026 Ford F-150\/F-250 Behind-Seat Single 10\" Enclosure – Loaded with Alpine RSW10","description":"\u003cstyle\u003e\n.pl-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#cbd5e1;max-width:1100px;margin:0 auto;background:#020617;}\n.pl-wrap 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h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0;}\n.pl-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#cbd5e1;}\n@media(max-width:600px){.pl-hero h2{font-size:1.7em;}.pl-section,.pl-enc,.pl-cta,.pl-hero{padding-left:20px;padding-right:20px;}}\n\u003c\/style\u003e\n\u003cdiv class=\"pl-wrap\"\u003e\n\n\u003cdiv class=\"pl-hero\"\u003e\n\u003ch2\u003eProline X Vehicle Specific Series Enclosure for the Alpine RS-W10D4\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the Alpine RS-W10D4, built to drop into the 2015-2023 F-150, 2017-2023 F-250\u003c\/p\u003e\n\u003cdiv class=\"pl-badges\"\u003e\n\u003cspan class=\"pl-badge\"\u003eCNC Stack-Fab\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e0.50 cu ft Net\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003eFits Alpine RS-W10D4\u003c\/span\u003e\n\u003cspan class=\"pl-badge\"\u003e2015-2023 F-150, 2017-2023 F-250\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-stats\"\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.50\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.937\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e34 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-stat\"\u003e\n\u003cspan class=\"n\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"l\"\u003eRS-W10D4 mounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/Overview_-_visual_selection.png?v=1746500510\" alt=\"Alpine Subwoofer Features\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eBuilt Around the Alpine RS-W10D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this box is generic. Every layer is cut to the RS-W10D4's published sealed target, with clearance cut for its 3.25 in mounting depth.\u003c\/p\u003e\n\u003cp\u003eThe RS-W10D4 carries a published \u003cstrong\u003eFs of 31 Hz, Qts of 1.19 and Vas of 23.35 litres\u003c\/strong\u003e, and an EBP of 21, which puts it in sealed enclosure territory. We ran the alignment math on that data and built the box to land where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.50 cubic feet net\u003c\/strong\u003e, against a published recommendation of 0.45 to 1.0 cu ft. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.\u003c\/p\u003e\n\u003cdiv class=\"pl-highlight\"\u003e\n\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated by summing\neach CNC cut layer's opening, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eProline X Vehicle Specific Series Construction\u003c\/h3\u003e\n\u003cp\u003eThis enclosure is stack fabricated on our ShopSabre routers from Langboard Elite 3\/4 inch MDF,\na dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE.\nEach layer is cut to the cab profile and the stack does the joining. Dowel reinforcement runs between layers as tension hardware only, which is what lets the shell follow a behind seat contour without a corner joint in it.\u003c\/p\u003e\n\u003cdiv class=\"pl-grid\"\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eThreaded Inserts, Not Wood Screws\u003c\/h4\u003e\n\u003cp\u003e8\/32 threaded inserts are set on the backside of the baffle so the driver mounts on machine screws. Pull it a dozen times and the threads are still there.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. No CCA anywhere in the build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pl-card\"\u003e\n\u003ch4\u003eDamped and Finished\u003c\/h4\u003e\n\u003cp\u003ePolyfill is pre-installed to smooth the in box response, and the shell is wrapped in plush black carpet. Built in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-section\"\u003e\n\u003ch3\u003eEnclosure Only or Loaded\u003c\/h3\u003e\n\u003cp\u003eOrder the enclosure bare and mount your own RS-W10D4, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-enc\"\u003e\n\u003ch3\u003eSealed Enclosure Performance: Pre-Calculated\u003c\/h3\u003e\n\u003cp\u003eUsing the published Thiele Small parameters for the Alpine RS-W10D4, here is the predicted Qtc,\nsystem resonance (Fc) and F3 rolloff for this enclosure. Calculated with the same formulas\nas the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n\u003cdiv class=\"pl-enc-card\"\u003e\n\u003cdiv class=\"pl-enc-head\"\u003eAlpine RS-W10D4 4 ohm + 4 ohm  |  Qts 1.19  |  Fs 31 Hz  |  Vas 23.35 L\u003c\/div\u003e\n\u003ctable class=\"pl-enc-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pl-opt\"\u003e\n\u003ctd\u003e0.50 cu ft \u003cspan class=\"pl-char\"\u003eas built\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.937\u003c\/td\u003e\n\u003ctd\u003e50.5 Hz\u003c\/td\u003e\n\u003ctd\u003e34.1 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-graph\"\u003e\n\u003cp class=\"pl-graph-title\"\u003eAlpine RS-W10D4 Frequency Response | Sealed, 0.50 cu ft\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 680 300\" 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587.3,59.7 589.4,59.8 591.4,59.9 593.5,60.0 595.6,60.2 597.7,60.3 599.7,60.4 601.8,60.5 603.9,60.6 605.9,60.7 608.0,60.9 610.1,61.0 612.2,61.1 614.2,61.2 616.3,61.3 618.4,61.4 620.5,61.5 622.5,61.6 624.6,61.7 626.7,61.8 628.8,61.8 630.8,61.9 632.9,62.0 635.0,62.1 637.0,62.2 639.1,62.3 641.2,62.4 643.3,62.4 645.3,62.5 647.4,62.6 649.5,62.7 651.6,62.7 653.6,62.8 655.7,62.9 657.8,63.0 659.9,63.0 661.9,63.1 664.0,63.2\" fill=\"none\" stroke=\"#a78bfa\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n\u003cdiv class=\"pl-legend\"\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#a78bfa;\"\u003e\u003c\/span\u003e0.50 cu ft (Qtc 1.937)\u003c\/span\u003e\n\u003cspan class=\"pl-legend-item\"\u003e\u003cspan class=\"pl-sw\" style=\"background:#8b5cf6;\"\u003e\u003c\/span\u003e-3dB reference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-note\"\u003e\u003cp\u003e\u003cstrong style=\"color:#a78bfa;\"\u003eNote on this alignment:\u003c\/strong\u003e Alpine publishes a Qts of 1.19 for the RS-W10D4, which is high for a sealed application. In 0.50 cubic feet that produces a rise around system resonance rather than a flat response, along with an F3 of 34.1 Hz. Alpine's own sealed recommendation for this driver is 0.45 to 1.0 cubic feet, and the figure stays above 1.6 across that whole range. The numbers above are calculated straight from Alpine's published parameters, not adjusted. \u003ca class=\"pl-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pl-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eSelect your configuration above. This enclosure ships free to the lower 48 with a 2 year limited warranty, built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44879133212761,"sku":"VS FD1 10-S ALP D4","price":1049.99,"currency_code":"USD","in_stock":false}],"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":"alpine-rs-w12d4-r-series-shallow-12-inch-subwoofer","title":"Alpine RS-W12D4 | R-Series Shallow 12 inch Subwoofer | Dual 4 Ohm","description":"\u003cstyle\u003e\n .rf-wrap { max-width: 100%; font-family: inherit; color: #d1d5db !important; }\n .rf-hero { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #b91c1c !important; }\n .rf-eyebrow { color: #9ca3af !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n .rf-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n .rf-hero p { color: #d1d5db !important; font-size: 16px; margin: 0 0 18px 0; }\n .rf-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n .rf-badge { background: #b91c1c !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n .rf-badge-alt { background: #1f2937 !important; color: #d1d5db !important; border: 1px solid #374151 !important; }\n .rf-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #b91c1c !important; padding-left: 12px; }\n .rf-wrap p, .rf-wrap li { color: #d1d5db !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n .rf-wrap a { color: #f87171 !important; text-decoration: underline; }\n .rf-callout { background: #1f2937 !important; border: 1px solid #374151 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n .rf-callout p { color: #d1d5db !important; margin: 0 0 8px 0; }\n .rf-table { width: 100%; border-collapse: collapse; margin: 16px 0 22px 0; font-size: 15px; }\n .rf-table th { background: #b91c1c !important; color: #ffffff !important; padding: 10px 12px; text-align: left; }\n .rf-table td { background: #111827 !important; color: #d1d5db !important; padding: 10px 12px; border-bottom: 1px solid #1f2937 !important; }\n .rf-cta { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #b91c1c !important; }\n .rf-cta h3 { border-left: none !important; padding-left: 0; margin-top: 0; }\n @media (max-width: 600px) { .rf-table { font-size: 13px; } .rf-table th, .rf-table td { padding: 8px 6px; } }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rf-wrap\"\u003e\n\n \u003cdiv class=\"rf-hero\"\u003e\n \u003cp class=\"rf-eyebrow\"\u003eAlpine R-Series Shallow Subwoofer\u003c\/p\u003e\n \u003ch2\u003eAlpine RS-W12D4 12 Inch Shallow Subwoofer\u003c\/h2\u003e\n \u003cp\u003e600 watts RMS and 20 mm of Xmax from 3.25 inches of mounting depth. The RS-W12D4 gives a shallow 12 the same cone travel as Alpine's full-size R2 woofers, driven by a 4 inch voice coil and a neodymium motor, with dual 4 ohm coils for flexible wiring.\u003c\/p\u003e\n \u003cdiv class=\"rf-badges\"\u003e\n \u003cspan class=\"rf-badge\"\u003e600W RMS\u003c\/span\u003e\n \u003cspan class=\"rf-badge\"\u003e3.25 in Depth\u003c\/span\u003e\n \u003cspan class=\"rf-badge\"\u003e20 mm Xmax\u003c\/span\u003e\n \u003cspan class=\"rf-badge rf-badge-alt\"\u003eDual 4 Ohm\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eFull-Size Excursion in a Shallow Basket\u003c\/h3\u003e\n \u003cp\u003eMost shallow 12s give up excursion to save depth. The RS-W12D4 keeps 20 mm of one-way linear excursion and 54 mm of peak-to-peak mechanical travel in a 3.25 inch mounting depth. The cutout is 11-5\/8 inches (295 mm), the frame is 12.82 inches across, and the driver displaces only 0.05 cubic feet, so it fits behind truck seats, in thin floor boxes and anywhere a full-depth 12 will not clear.\u003c\/p\u003e\n \u003cp\u003eAlpine's Gen2 DD Linear dual magnetic gap keeps the 4 inch voice coil under control at high excursion for lower distortion, and a neodymium magnet keeps the motor light and short. The coil former is vented, a cooling fin draws heat off the voice coil, and the frame is die-cast aluminum with a removable trim ring and an aluminum dust cap. The trim ring accepts Alpine's KTE-RS12G grille kit, sold separately.\u003c\/p\u003e\n\n \u003ch3\u003eWiring the Dual 4 Ohm Coils\u003c\/h3\u003e\n \u003cdiv class=\"rf-callout\"\u003e\n \u003cp\u003e\u003cstrong\u003eOne woofer:\u003c\/strong\u003e coils in parallel give a 2 ohm load, coils in series give 8 ohms.\u003c\/p\u003e\n \u003cp\u003e\u003cstrong\u003eTwo woofers:\u003c\/strong\u003e wire each in series to 8 ohms and parallel the pair for a 4 ohm load, or wire each in parallel to 2 ohms and parallel the pair for 1 ohm.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cp\u003eAlpine rates the RS-W12D4 at 600 watts RMS and 1800 watts peak, with a recommended amplifier range of 500 to 600 watts RMS per woofer.\u003c\/p\u003e\n\n \u003ch3\u003eAlpine's Recommended Sealed Boxes\u003c\/h3\u003e\n \u003cp\u003eAlpine designs the R-Series Shallow for sealed enclosures and gives a sealed range of 0.6 to 1.5 cubic feet net for the 12. These are Alpine's own recommended boxes, built from 3\/4 inch MDF, with the F3 and Fb figures Alpine publishes for each.\u003c\/p\u003e\n \u003ctable class=\"rf-table\"\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eExternal (W x H x D)\u003c\/th\u003e\n\u003cth\u003eGross\u003c\/th\u003e\n\u003cth\u003eNet\u003c\/th\u003e\n\u003cth\u003eF3, Fb\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall\u003c\/td\u003e\n\u003ctd\u003e18\" x 15\" x 6.5\"\u003c\/td\u003e\n\u003ctd\u003e0.65 cu ft\u003c\/td\u003e\n\u003ctd\u003e0.60 cu ft\u003c\/td\u003e\n\u003ctd\u003e35 Hz, 49 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e22\" x 16\" x 7\"\u003c\/td\u003e\n\u003ctd\u003e0.95 cu ft\u003c\/td\u003e\n\u003ctd\u003e0.90 cu ft\u003c\/td\u003e\n\u003ctd\u003e30.5 Hz, 43 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e21\" x 16\" x 9\"\u003c\/td\u003e\n\u003ctd\u003e1.25 cu ft\u003c\/td\u003e\n\u003ctd\u003e1.20 cu ft\u003c\/td\u003e\n\u003ctd\u003e29 Hz, 40 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eEnclosures We Cut for the RS-W12\u003c\/h3\u003e\n \u003cp\u003eWe build two Proline X down fire sealed cabinets for this driver in Tullahoma, Tennessee, with the 11-5\/8 inch cutout and 3.25 inch mounting depth cut direct fit:\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-12-enclosure-alpine-rs-w-shallow\"\u003eDown fire sealed 12 inch enclosure\u003c\/a\u003e for one RS-W12, 0.70 cubic feet net.\u003c\/li\u003e\n \u003cli\u003e\n\u003ca href=\"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-12-enclosure-alpine-rs-w-shallow\"\u003eDown fire sealed dual 12 inch enclosure\u003c\/a\u003e for a pair, 0.70 cubic feet net per chamber.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003eBoth are listed in the Enclosures tab on this page. For a smaller space, see the \u003ca href=\"https:\/\/audiointensity.com\/products\/alpine-shallow-10-inch-subwoofer-rsw10d4\"\u003eAlpine RS-W10D4 shallow 10\u003c\/a\u003e, and every cabinet we cut for Alpine drivers is in our \u003ca href=\"https:\/\/audiointensity.com\/collections\/alpine-subwoofer-box\"\u003eAlpine subwoofer box collection\u003c\/a\u003e.\u003c\/p\u003e\n\n \u003cdiv class=\"rf-cta\"\u003e\n \u003ch3\u003eQuestions About Fitment or Wiring?\u003c\/h3\u003e\n \u003cp\u003eCall 931-563-5151 and talk to someone who installs these. We will help you pick the load and the box for your vehicle.\u003c\/p\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Alpine","offers":[{"title":"Default Title","offer_id":44960153272409,"sku":"RSW12D4","price":799.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/alpine-rs-w12d4-shallow-12-subwoofer-angle.jpg?v=1790201014"}],"url":"https:\/\/audiointensity.com\/collections\/alpine.oembed","provider":"Audio Intensity","version":"1.0","type":"link"}