{"product_id":"performance-optimized-wedge-sealed-12-enclosure-alpine-r2-w12","title":"Performance Optimized Wedge Sealed 12\" Enclosure | Alpine R2-W12","description":"\u003cp\u003eThe \u003cstrong\u003ePerformance Optimized Wedge Sealed 12\" Enclosure for the Alpine R2-W12\u003c\/strong\u003e is a musical sealed cabinet built around Alpine's R2-Series 12-inch subwoofer. The R2 platform is Alpine's flagship woofer line, combining serious build quality with musical tuning intent.\u003c\/p\u003e\u003cp\u003eThe Alpine R2-W12 (R2-W12D2 dual 2Ω or R2-W12D4 dual 4Ω) is a 750-watt RMS subwoofer with 20mm of one-way Xmax, a reinforced parabolic 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), and custom cast aluminum frame with perimeter venting and airflow management (US Pat 7,684,585). The motor uses a double-stacked strontium ferrite magnet assembly (144 oz) driving a 65.5mm 4-layer DVC winding on an aluminum former, with Alpine's compound radius curve extended pole geometry (US Pat 6,639,993) and airflow-optimized dual flare pole vent for thermal management under sustained output. 8AWG push terminals with voice-coil configuration jumpers.\u003c\/p\u003e\u003cp\u003eThe 0.75 cubic foot net volume produces a Qtc of 0.68 with the D2 coil (near-Butterworth musical) and 0.81 with the D4 coil (punchy) based on Alpine's published T\/S parameters. This sits at the middle of Alpine's own recommended sealed range and delivers a tight, controlled alignment across both impedance options. Predicted F3 lands at 43-50 Hz depending on coil choice, with strong cabin gain typical of trunk installations extending that meaningfully lower in-vehicle. Fc lands at 48 Hz across both coils.\u003c\/p\u003e\u003cp\u003eConstruction is the full Proline X Performance Optimized platform: ShopSabre CNC-cut Langboard Elite MDF stack-fab layers, all four corners radiused 3\" viewed top-down, precision-milled magnet cavity for volume tuning and voice-coil cooling, perimeter cross-bracing, and a double-layer 1.5\" front baffle (two 3\/4\" MDF sheets bonded) for maximum baffle rigidity and driver isolation. Wedge geometry angles the cone rear-firing into the trunk at ~23° from vertical for optimum cabin loading. Terminal cup is our Proline X ABS\/carbon-fiber composite pre-wired with 12 gauge OFC.\u003c\/p\u003e\u003cp\u003eBring your own Alpine R2-W12 — mount cutout is direct-fit for either the R2-W12D2 or R2-W12D4. The 8AWG push terminals with VC configuration jumpers on the driver itself let you wire the dual voice coils in series or parallel at the driver.\u003c\/p\u003e\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year enclosure warranty.\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44536223105113,"sku":"PO 12-S W R2","price":289.99,"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_d4b6f129-8c74-469f-88dd-8a540f2e5da8.jpg?v=1787013505","url":"https:\/\/audiointensity.com\/products\/performance-optimized-wedge-sealed-12-enclosure-alpine-r2-w12","provider":"Audio Intensity","version":"1.0","type":"link"}