3512-04 + RS12 + K1

Put a single-subwoofer car audio setup together with the 3512-04 12-inch, 4-ohm subwoofer, a sealed 12-inch enclosure, and the wiring and mounting pieces for installation. The sub is rated for 250 W RMS and 500 W peak, with a recommended amplifier range of 125 to 250 W RMS. Its 28 Hz to 130 Hz response and 86 dB sensitivity provide the key performance figures for planning the system. An inverted Apex surround increases surface area, progressive suspension controls excursion at high power, and Spider Plateau Venting directs cooling air toward the voice coil. The included enclosure is built from 3/4-inch MDF and has gold spring-loaded terminals. The package also contains 12 feet of 14 AWG blue speaker wire, two spade terminals, and 10 metal screws for mounting and connections. This one-box package covers the subwoofer, enclosure, and basic installation hardware without requiring separate sourcing for those listed parts.