{"product_id":"rockford-fosgate-r2sd4-12-12-dual-4-ohm-shallow-subwoofer","title":"Rockford Fosgate R2SD4-12 12\" Dual 4-Ohm Shallow Subwoofer","description":"\u003cp\u003eThe Rockford Fosgate Prime R2SD4-12 is a 12-inch shallow-mount subwoofer designed for vehicle audio systems with limited enclosure depth. Its dual 4-ohm voice coils provide wiring flexibility while its 250-watt RMS rating supports a properly matched external amplifier. It is a practical option for compact trunks, behind-seat truck installations, and other space-conscious bass upgrades.\u003c\/p\u003e\u003cp\u003eThis subwoofer is engineered to add low-frequency support without requiring the depth of a conventional full-size 12-inch driver. Its published frequency response is 43 to 250 Hz, making it intended for bass reproduction rather than full-range speaker duty. A sealed enclosure is the primary recommended application for controlled, space-efficient bass performance.\u003c\/p\u003e\u003cp\u003eThe R2SD4-12 uses a mica-injected polypropylene cone and high-density poly-foam surround to support repeated cone movement. A high-temperature copper voice coil on an aluminum former is paired with stitched flexible lead wires and a poly-cotton spider. These components are intended to support stable operation at its rated power level.\u003c\/p\u003e\u003cp\u003eIts shallow motor assembly is supported by a heavy-gauge stamped-steel StampCast basket with integrated spider venting. The venting design helps move heat away from the motor structure during operation. An integrated semi-flexible PVC trim ring gives the installed woofer a finished appearance.\u003c\/p\u003e\u003cp\u003eWith dual 4-ohm coils, a single R2SD4-12 may be wired for a 2-ohm or 8-ohm final load, depending on amplifier capability and wiring method. It needs a compatible subwoofer amplifier, enclosure, wiring, and installation hardware to operate as part of a complete system. Its 3.602-inch mounting depth and 11.25-inch cutout requirement should be checked before building or selecting an enclosure.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShallow-Mount 12-Inch Design:\u003c\/strong\u003e Uses a 3.602-inch mounting depth for installations with limited space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 4-Ohm Voice Coils:\u003c\/strong\u003e Allows 2-ohm or 8-ohm single-subwoofer wiring configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250 Watts RMS Handling:\u003c\/strong\u003e Supports amplifier matching up to its continuous rated power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMica-Injected Polypropylene Cone:\u003c\/strong\u003e Provides a rigid cone material for bass reproduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpider-Vented StampCast Basket:\u003c\/strong\u003e Helps manage motor heat through integrated basket venting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed-Enclosure Optimization:\u003c\/strong\u003e Supports compact sealed-box installations with recommended enclosure data.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe R2SD4-12 combines a mica-injected polypropylene cone, poly-foam surround, polypropylene dustcap, single poly-cotton spider, and aluminum voice-coil former. Its heavy-gauge stamped-steel frame incorporates integrated spider venting, while the all-metal dual compression terminals accept 12 AWG speaker wire. The subwoofer also includes an integrated PVC trim ring.\u003c\/p\u003e\u003cp\u003ePlan for an 11.25-inch cutout diameter and 3.602 inches of mounting depth, plus clearance behind the motor and around the terminals. Rockford Fosgate specifies a 0.90-cubic-foot sealed enclosure as a recommended alignment; a 1.79-cubic-foot ported enclosure tuned to 40 Hz is also published. Use a compatible external amplifier and configure the two 4-ohm voice coils only for an impedance load the amplifier is rated to drive.\u003c\/p\u003e","brand":"Rockford Fosgate","offers":[{"title":"Default Title","offer_id":45642676076614,"sku":"R2SD4-12","price":179.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/812VBovZxRL.jpg?v=1784436182","url":"https:\/\/audiowatt.store\/products\/rockford-fosgate-r2sd4-12-12-dual-4-ohm-shallow-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}