3512-04S Pair, dB13 Amp, RWK41 Wiring Kit, REC69 Dual 12-Inch Enclosure

Build a dual-subwoofer bass system for a 2000-2016 F250, F350, or F450 Crew Cab with two 12-inch shallow-mount 3512-04S subwoofers, a dual 12-inch ported enclosure, a mono dB13 amplifier, and installation wiring. At 3.375 inches deep, each subwoofer suits tight mounting spaces, while the enclosure is designed to sit behind the rear seat. Its specified fitment calls for permanent removal of the jack kit, rear seat-belt cover, and rear carpet; the power-window motor must also be removed during installation. The amplifier includes adjustable low-pass and subsonic filters, phase control, bass adjustment, and a dashboard subwoofer remote. The included 4 AWG wiring kit has signal cables, plus 20 metal screws, 20 feet of 14 AWG speaker wire, and four spade terminals. Each sub handles 300 W RMS and recommends 150 to 300 W RMS amplifier power. Confirm the final wiring load and amplifier settings before use.