7515-44 + BASS PARTY 8

Build a car-audio system around the 7515-44, a 15-inch dual 4-ohm competition subwoofer rated for 750W RMS and 1,500W peak. Pair it with an amplifier in the recommended 375W to 750W RMS range, and choose an enclosure with 1.5 cu ft net volume when sealed or 2.48 cu ft when vented. The Inverted Apex Surround increases surface area and Xmax for greater volume displacement, while Spider Plateau Venting targets cool air at the voice coil. A progressive layered spider controls excursion at high output, and the cast aluminum basket helps limit resonance. The bundle also includes a dual 8-inch battery-powered Bluetooth party speaker as a bonus for tailgating, backyard listening, or another room. It offers USB and SD playback, a microphone input for karaoke, a guitar input, bass and treble controls, and eight LED modes. The 12V 7Ah battery is listed for about 10 hours at 20% volume, four hours at 50%, or 2.5 hours at 90%.