{"product_id":"rockford-fosgate-t1d415-15-dual-4-ohm-subwoofer","title":"Rockford Fosgate T1D415 15\" Dual 4-Ohm Subwoofer","description":"\u003cp\u003eThe Rockford Fosgate T1D415 is a 15-inch dual voice coil car subwoofer designed for systems that need substantial low-frequency output without moving to multiple drivers. Its dual 4-ohm voice coils and selectable impedance terminal support flexible amplifier matching. It is intended for a properly designed sealed or ported enclosure and a dedicated subwoofer amplifier.\u003c\/p\u003e\u003cp\u003eWith 1,000 watts RMS power handling, the T1D415 is suited to listeners building a high-power bass system with controlled, deep output. Its 15-inch format provides significant cone area for reproducing demanding bass passages. A 3-inch high-temperature aluminum voice coil and cooling-focused motor design support sustained use at appropriate power levels.\u003c\/p\u003e\u003cp\u003eThe woofer uses Rockford Fosgate's VAST surround design, which increases effective radiating cone area while retaining the external dimensions needed for installation. Its Kevlar fiber-reinforced semi-pressed paper cone is paired with a Santoprene surround for a durable moving assembly. The 16.4 mm Xmax specification gives the driver room for substantial linear cone travel.\u003c\/p\u003e\u003cp\u003eRockford Fosgate equips the T1D415 with an IDHS inductive damping heat sink, a double-stack ferrite motor, vented pole and spider cooling, and a rigid die-cast aluminum frame. These elements are designed to manage heat and maintain mechanical stability during demanding bass playback. The SWIFT terminal uses a reversible jumper to configure the dual coils for the intended amplifier load.\u003c\/p\u003e\u003cp\u003eThe T1D415 works well as the foundation of a trunk, hatch, or SUV bass upgrade when enclosure space and amplifier capacity are available. Rockford Fosgate specifies a 2.25-cubic-foot sealed enclosure or a 2.66-cubic-foot vented enclosure for this model. Pair it with an amplifier selected for its final 2- or 8-ohm configuration and use appropriate crossover and subsonic-filter settings for the enclosure type.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15-Inch Power Subwoofer:\u003c\/strong\u003e Provides large cone area for serious low-frequency reproduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Watt RMS Handling:\u003c\/strong\u003e Supports high-output systems when matched with a suitable amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 4-Ohm Voice Coils:\u003c\/strong\u003e Enables 2- or 8-ohm nominal wiring configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVAST Surround:\u003c\/strong\u003e Increases effective radiating cone area by up to 25%.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIDHS Heat Sink:\u003c\/strong\u003e Helps manage heat at the motor and voice coil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSWIFT Terminal:\u003c\/strong\u003e Uses a reversible jumper for series or parallel coil configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe T1D415 combines a Kevlar fiber-reinforced semi-pressed paper cone, Santoprene surround, hard-anodized aluminum dust cap, poly-cotton spiders, and a die-cast aluminum frame. Its double-stack ferrite magnet structure, extended vented pole, bumped backplate, and spider cooling vents are engineered for high-power subwoofer operation. A removable, reversible trim ring provides a finished mounting appearance, and a protective grille is included.\u003c\/p\u003e\u003cp\u003eAllow for a 13-15\/16-inch mounting cutout and 8-25\/64-inch mounting depth before selecting an enclosure location. Use a rigid, well-braced enclosure; Rockford Fosgate recommends 3\/4-inch MDF construction and specifies a 2.25-cubic-foot sealed box or 2.66-cubic-foot vented box. The SWIFT jumper should be securely configured for the amplifier's supported load, and Rockford Fosgate advises authorized-dealer setup for jumper changes.\u003c\/p\u003e","brand":"Rockford Fosgate","offers":[{"title":"Default Title","offer_id":45655529881670,"sku":"T1D415","price":849.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71-DVS7Y0IL_8db3f401-cf17-42b7-9103-6ba444119b49.jpg?v=1784443452","url":"https:\/\/audiowatt.store\/products\/rockford-fosgate-t1d415-15-dual-4-ohm-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}