The P500 Powered Subwoofer is very similar to the P1000, but uses two 8-inch woofers and a 500-watt B.A.S.H.® amplifier. It uses the same Subwoofer Control Module, remote control and optical isolation as the P1000. It delivers thunderous bass, tightly and accurately, down to 24Hz , all in a remarkably small, one-foot-square cabinet!