{"product_id":"rockford-fosgate-m2d4-12ib-12-marine-infinite-baffle-subwoofer","title":"Rockford Fosgate M2D4-12IB 12\" Marine Infinite-Baffle Subwoofer","description":"\u003cp\u003eThe Rockford Fosgate M2D4-12IB is a 12-inch marine subwoofer engineered for infinite-baffle installations where a conventional subwoofer enclosure is not practical. It is designed for boats and powersports systems that need dedicated low-frequency output while preserving usable storage space. A properly isolated mounting baffle separates the front and rear sound waves to help prevent bass cancellation.\u003c\/p\u003e\u003cp\u003eThis model is intended for listeners building a marine audio system with substantial bass capability and weather-conscious components. Its 400-watt RMS power rating supports use with a suitably matched external amplifier, while the dual 4-ohm voice-coil design provides installation flexibility. The built-in VersaSwitch changes the final impedance configuration to either 2 or 8 ohms without conventional series or parallel jumper wiring.\u003c\/p\u003e\u003cp\u003eThe M2D4-12IB is tuned for low- and mid-bass reproduction, with a published frequency response of 20 Hz to 750 Hz. Its 15 mm Xmax and VAST surround design support substantial cone movement and increased effective radiating area. The result is a purpose-built subwoofer for adding bass impact to open-air listening environments.\u003c\/p\u003e\u003cp\u003eIntegrated Color Optix RGB LED lighting adds configurable illumination to the speaker assembly. Lighting control requires the separately sold Rockford Fosgate PMX-RGB Color Optix controller and the RF Connect app. Integrated Deutsch and Amphenol connections are designed to simplify the marine-grade lighting connection process.\u003c\/p\u003e\u003cp\u003eFor marine and powersports use, the M2D4-12IB combines UV-stable materials, corrosion-resistant terminals, sealed lighting connections, and Element Ready construction. Its black finish can be paired with the supplied two-piece grille arrangement for a coordinated installation appearance. It is sold individually and fits naturally into a Rockford Fosgate Color Optix system upgrade.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfinite-Baffle Design:\u003c\/strong\u003e Delivers bass without requiring a conventional enclosure when mounted on a properly isolated baffle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-Watt RMS Handling:\u003c\/strong\u003e Supports amplifier matching for substantial low-frequency output in marine systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersaSwitch Impedance Control:\u003c\/strong\u003e Selects a 2-ohm or 8-ohm final load without additional coil-jumper wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Optix RGB Lighting:\u003c\/strong\u003e Provides configurable multicolor illumination with the optional PMX-RGB controller and RF Connect app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElement Ready Construction:\u003c\/strong\u003e Uses marine-focused materials and sealed connections for exposure to water, salt, and UV.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchangeable Grille Styling:\u003c\/strong\u003e Two-piece grille design supports stainless-steel or sport-style visual accents.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe M2D4-12IB uses an injection-molded mineral-filled polypropylene cone, UV-stable foam surround, composite spider, and a high-temperature injection-molded frame. Gold-plated marine-grade brass terminals support corrosion-resistant signal connections, while the grille and frame use UV-stable plastic construction. The integrated lighting system uses wide-angle RGB LEDs with sealed marine-style connectors.\u003c\/p\u003e\u003cp\u003eInstall this subwoofer in an infinite-baffle location with an 11-inch cutout and at least 5.13 inches of mounting depth. A rigid mounting baffle is required to isolate the rear wave from the front wave, even though a conventional enclosure is not required. Match the amplifier to the selected 2-ohm or 8-ohm VersaSwitch setting, and add the separately sold PMX-RGB controller when Color Optix lighting control is desired.\u003c\/p\u003e","brand":"Rockford Fosgate","offers":[{"title":"Default Title","offer_id":45633949302854,"sku":"M2D4-12IB","price":599.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71_veJMGwUL.jpg?v=1784426845","url":"https:\/\/audiowatt.store\/products\/rockford-fosgate-m2d4-12ib-12-marine-infinite-baffle-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}