This Pioneer® TS-WX1210A is a powerful, sealed, preloaded subwoofer enclosure. It features a built-in, high-output, low-distortion, 1,300-watt max Class D amplifier paired with a 12-in. subwoofer that has a urethane surround and an oversized magnet structure, specifically optimized for use in sealed enclosures. User-adjustable controls include an LPF, phase control, variable bass boost level, and bass boost to provide enhanced subwoofer control. With the included RCA (low-voltage) input and speaker line (high-voltage) input cables, you can start your setup right out of the box. Designed for easy integration, this powered subwoofer makes installation easy, whether or not your source unit has pre-outs. The innovative trapezoid shape is designed for high rigidity and to reduce internal standing waves, while also increasing installation flexibility. You can install it freely in the cabin or trunk space and re-positioned with the subwoofer firing rear, front, or upwards for optimal bass tuning. The enclosure is fully carpeted, creating a non-slip, durable and scratch-resistant surface. This subwoofer uses Pioneer's VCCS (Voice-Coil Cooling System) to create better airflow around the motor drive unit, including the voice coil within the extended pole-piece and magnet. This design achieves better power handling and heat management within the sealed enclosure. And to expand system flexibility, you can control the output volume using the included wired remote bass control knob.