{"product_id":"rockford-fosgate-r2d412","title":"Rockford Fosgate R2D4-12 12\" Dual 4-Ohm Subwoofer","description":"\u003cp\u003eThe Rockford Fosgate R2D4-12 is a 12-inch dual voice coil car subwoofer designed to add controlled low-frequency output to a vehicle audio system. Rated for 250 watts RMS, it is suited to systems that need a dedicated bass driver without requiring extreme amplifier power. Its dual 4-ohm voice coils provide wiring flexibility when matching the subwoofer to a compatible amplifier.\u003c\/p\u003e\u003cp\u003eThis model is a practical choice for listeners building a first subwoofer system or upgrading factory speakers with fuller low-end response. It can be used in either a sealed or vented enclosure, allowing the enclosure type to be selected around available space and listening preferences. The manufacturer provides recommended box volumes for both approaches.\u003c\/p\u003e\u003cp\u003eThe R2D4-12 uses a mica-injected polypropylene cone and a high-density poly-foam surround. Its poly-cotton spider, copper voice coil, and aluminum voice coil former are engineered for repeated cone movement under normal operating conditions. A linear spider with embedded 16 AWG tinsel leads helps support reliable signal transfer to the moving assembly.\u003c\/p\u003e\u003cp\u003eIts motor system uses an extended pole piece and bumped, vented backplate to support cooling and cone travel. The stamped steel StampCast basket incorporates spider venting, while a removable PVC motor cover and integrated PVC trim ring complete the exterior design. Dual 12 AWG compression terminals provide a secure connection point for speaker wire.\u003c\/p\u003e\u003cp\u003eFor system integration, the R2D4-12 should be paired with an amplifier and wiring configuration that safely matches its dual 4-ohm voice coils. Rockford Fosgate recommends an active low-pass crossover in the 80-100 Hz range at 12 dB per octave for subwoofer use. It is intended for custom enclosure installations and is supplied as a raw subwoofer rather than a loaded enclosure.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 4-Ohm Voice Coils:\u003c\/strong\u003e Supports flexible series or parallel wiring options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250-Watt RMS Handling:\u003c\/strong\u003e Matches moderate-power subwoofer amplifier systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Inch Driver:\u003c\/strong\u003e Adds dedicated low-frequency output to car audio systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMica-Injected Polypropylene Cone:\u003c\/strong\u003e Provides a durable, rigid cone structure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStampCast Vented Basket:\u003c\/strong\u003e Helps support motor cooling during operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed Or Vented Compatibility:\u003c\/strong\u003e Allows installation in either recommended enclosure type.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe R2D4-12 combines an injection-molded polypropylene cone, sealed half-roll poly-foam surround, tear- and fatigue-resistant poly-cotton spider, and heavy-gauge stamped steel frame. Its high-temperature copper voice coil is wound on an aluminum former, and the motor assembly includes an extended pole and vented backplate. A semi-flexible removable PVC motor cover, integrated trim ring, and all-metal compression terminals support the overall installation-ready design.\u003c\/p\u003e\u003cp\u003eAllow for a 5.067-inch mounting depth and an 11.25-inch cutout diameter when planning the enclosure baffle. Rockford Fosgate lists a 1.02 cubic foot sealed enclosure or a 1.79 cubic foot vented enclosure as recommended applications; the vented design uses a 4-inch diameter, 9.3-inch-long port tuned to 45 Hz. Wire the two 4-ohm voice coils only in a configuration compatible with the amplifier, and use an active 80-100 Hz low-pass crossover as recommended in the owner's manual.\u003c\/p\u003e","brand":"ROCKFORD FOSGATE","offers":[{"title":"Default Title","offer_id":48001349648547,"sku":"R2D412","price":70.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0657\/5416\/9507\/files\/71a5HxZ8ZFL_dd42e650-55ce-4715-b1d8-ce2f18038ca7.jpg?v=1786899576","url":"https:\/\/nsiexport.com\/products\/rockford-fosgate-r2d412","provider":"NSI Export","version":"1.0","type":"link"}