{"product_id":"performance-optimized-down-fire-sealed-dual-12-enclosure-alpine-rs-w-shallow","title":"Performance Optimized Down Fire Sealed Dual 12\" Enclosure | Alpine RS-W Shallow","description":"\u003cp\u003eThe \u003cstrong\u003ePerformance Optimized Down Fire Sealed Dual 12\" Enclosure for the Alpine RS-W Shallow\u003c\/strong\u003e is a two-chamber sealed cabinet built around a pair of Alpine's neodymium shallow 12s. At \u003cstrong\u003e9.4375 inches tall\u003c\/strong\u003e on a 30 by 15 inch footprint, it puts two full 12s into a cabinet shorter than most dual 10 enclosures, with roughly 6 dB more maximum output than one RS-W12 in the same alignment.\u003c\/p\u003e\u003cp\u003eEach Alpine RS-W12 is available as the \u003cstrong\u003eRS-W12D2\u003c\/strong\u003e (dual 2Ω) or \u003cstrong\u003eRS-W12D4\u003c\/strong\u003e (dual 4Ω), 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 uses a \u003cstrong\u003ehigh-grade neodymium magnet\u003c\/strong\u003e 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. Die-cast aluminum frame, black anodized threaded rear mounting frame, aluminum dust cap, and a trim ring compatible with Alpine's RS grille kit. Cone area is 572 cm² per driver, \u003cstrong\u003e1144 cm² across the pair\u003c\/strong\u003e, the most in the Proline X Down Fire line.\u003c\/p\u003e\u003cp\u003eThis enclosure follows the Proline X standing design rule for dual sealed builds: \u003cstrong\u003etwo fully separate chambers\u003c\/strong\u003e divided by a bonded full-height 3\/4 inch MDF panel, giving each driver its own dedicated airspace. Two drivers sharing one sealed volume interact acoustically, with each driver's compression phase becoming the other's pressure environment, which smears transient response and blurs the alignment each would have on its own. Separate chambers eliminate that entirely.\u003c\/p\u003e\u003cp\u003eTotal internal gross volume is 1.502 cubic feet split into two chambers, giving \u003cstrong\u003e0.70 cubic feet net per driver\u003c\/strong\u003e after Alpine's published 0.05 cubic foot displacement. That sits between Alpine's small and medium sealed recommendations, placing the \u003cstrong\u003eF3 in the low 30 Hz range\u003c\/strong\u003e per driver. Each driver sees the same alignment as the single-driver Down Fire cabinet.\u003c\/p\u003e\u003cp\u003eNeodymium is what makes this cabinet practical. A pair of conventional ferrite 12s in separate chambers would demand substantially more height for the same net volume per driver. At 0.05 cubic feet displaced each, both of these drivers together consume less internal volume than a single conventional 12 typically does.\u003c\/p\u003e\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.\u003c\/p\u003e\u003cp\u003eConstruction is the full Proline X Performance Optimized platform: ShopSabre CNC-cut Langboard Elite MDF with \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, perimeter cross-bracing, and \u003cstrong\u003edouble-layer 1.5 inch front baffles\u003c\/strong\u003e (two 3\/4 inch sheets bonded) at both driver positions. Corners are square on Down Fire cabinets. Both drivers fire down into the floor, and \u003cstrong\u003eone side-mounted\u003c\/strong\u003e Proline X ABS\/carbon fiber composite terminal cup serves both chambers, fed in parallel to both driver positions with 12 gauge OFC.\u003c\/p\u003e\u003cp\u003eBring your own pair of RS-W12D2 or RS-W12D4 subwoofers. Both are dual voice coil, so you set your final impedance at the drivers. Wire both drivers identically.\u003c\/p\u003e\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year enclosure warranty.\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540240461913,"sku":"PO 12D-S DF RS","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_5f7fe6bd-c055-4e0c-bf5d-044a5b84c44e.jpg?v=1787106562","url":"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-12-enclosure-alpine-rs-w-shallow","provider":"Audio Intensity","version":"1.0","type":"link"}