10-inch subwoofer driver (300W, 4 ohm) 10" 4-ohm subwoofer metallic-finish polypropylene cone with nitrile-butylene rubber surround power range: 50-300 watts RMS peak power handling: 600 watts frequency response: 25-250 Hz sensitivity: 84.53 dB top-mount depth: 4-7/16" sealed box volume: 0.625 cubic feet ported box volume: 1.0 cubic foot warranty: 1 year