{"product_id":"hifonics-hfx12d4-12-dual-4-ohm-car-subwoofer","title":"Hifonics HFX12D4 12\" Dual 4-Ohm Car Subwoofer","description":"\u003cp\u003eThe Hifonics HFX12D4 is a 12-inch dual voice coil subwoofer designed to add dedicated low-frequency output to a vehicle audio system. It is rated for 400 watts RMS and 800 watts peak power handling, making it suited to systems that need more bass impact than full-range speakers can provide. Its round, standard-depth design is intended for universal mobile-audio installation.\u003c\/p\u003e\u003cp\u003eThis subwoofer is a practical option for listeners building a first bass system or replacing an existing 12-inch driver. Dual 4-ohm voice coils offer wiring flexibility, allowing a single subwoofer to be configured for a 2-ohm or 8-ohm load when the amplifier supports the selected load. Proper amplifier matching and gain setup remain important for dependable performance.\u003c\/p\u003e\u003cp\u003eThe HFX12D4 uses a vented aluminum voice-coil former with a 2-inch voice coil to help exchange heat during operation. A pressure-treated foam surround and poly-cotton spider support controlled cone movement. The result is a design focused on maintaining linear motion while handling bass duties in a dedicated enclosure.\u003c\/p\u003e\u003cp\u003eIts heavy-gauge, powder-coated stamped-steel basket provides a rigid mounting structure, while the vented frame and motor assembly promote airflow around the driver. Heavy-duty magnets and back venting are incorporated into the motor system to support power handling and reliability. Spade-style quick-disconnect terminals simplify connection during installation.\u003c\/p\u003e\u003cp\u003eThe HFX12D4 can be used in either a sealed or vented enclosure, depending on the desired system layout. Hifonics provides a 1.5-cubic-foot sealed recommendation as well as a 1.5-cubic-foot vented design tuned to 38 Hz. With a 10.94-inch cutout and 5.61-inch mounting depth, it should be measured against the enclosure and available mounting clearance before installation.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400W RMS Handling:\u003c\/strong\u003e Supports amplifier matching for sustained bass output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 4-Ohm Voice Coils:\u003c\/strong\u003e Allows 2-ohm or 8-ohm single-sub wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Inch Subwoofer:\u003c\/strong\u003e Adds dedicated low-frequency capability to a vehicle system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVented Aluminum Former:\u003c\/strong\u003e Helps the 2-inch voice coil exchange heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Basket Construction:\u003c\/strong\u003e Powder-coated stamped-steel frame supports the driver assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed Or Vented Compatibility:\u003c\/strong\u003e Works with manufacturer-recommended enclosure alignments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe HFX12D4 is built around a heavy-duty powder-coated steel frame, pressure-treated foam surround, and specialized poly-cotton spider. Its vented high-energy motor assembly uses heavy-duty magnets, while the frame's back venting is designed to circulate cooler air around the motor and voice-coil area. The subwoofer uses spade-style quick-disconnect terminals for its wiring connections.\u003c\/p\u003e\u003cp\u003ePlan the enclosure around the 12.25-inch outside diameter, 10.94-inch cutout diameter, and 5.61-inch mounting depth. Hifonics recommends a 1.5-cubic-foot sealed or 1.5-cubic-foot vented enclosure, with 3\/4-inch MDF specified in its enclosure-construction guidance. Use an amplifier and wiring configuration compatible with the final impedance load, apply a low-pass filter, and consider a subsonic filter for protection in a vented system.\u003c\/p\u003e","brand":"Hifonics","offers":[{"title":"Default Title","offer_id":45631926632518,"sku":"HFX12D4","price":71.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/710_KPs-ejL.jpg?v=1784389839","url":"https:\/\/audiowatt.store\/products\/hifonics-hfx12d4-12-dual-4-ohm-car-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}