12-inch subwoofer driver (600W, dual 4 ohm voice coils) 12" subwoofer with dual 4-ohm voice coils polypropylene W-Cone with polyester foam surround solid cast-alloy basket power range: 150-600 watts RMS peak power handling: 1,200 watts frequency response: 20-200 Hz sensitivity: 85.9 dB top-mount depth: 7-5/8" sealed box volume: 1.25 cubic feet ported box volume: 1.5 cubic feet warranty: 1 year