3512-02 + dB11 + RWK81 + RS12 + K1

This single-sub car audio package combines a 12-inch, 2-ohm subwoofer, a sealed enclosure, a mono amplifier, and wiring accessories for an in-car bass system. The 3512-02 subwoofer is rated at 250 W RMS and 500 W peak, with a 26 Hz to 130 Hz response, 86 dB sensitivity, a single 1.75-inch voice coil, and a 5.313-inch mounting depth. The inverted Apex surround increases surface area for air movement; progressive suspension controls excursion, and Spider Plateau venting directs cool air to the voice coil.

The RS12 enclosure holds one 12-inch subwoofer and uses 3/4-inch MDF, gold spring terminals, and machine-cut mounting holes. Its 0.75 cu ft net volume differs from the subwoofer specification calling for a 1.0 cu ft sealed enclosure, so review the volume mismatch before installation. The included dB11 mono amplifier is rated at 350 W RMS at 2 ohms, above the subwoofer's stated 125-250 W RMS recommended amplifier range; configure amplifier output conservatively. An 8-gauge installation kit with 100% copper RCA cables, a 60 A fuse, and split loom, plus 12 ft of 14-AWG speaker wire, 10 metal screws, and two spade terminals complete the package.