Infinity Reference 1052w 10-Inch Dual Voice Coil Subwoofer (Silver/Black) Polypropylene Woofer Cone for improved bass output This woofer can handle up to 250 watts RMS and 1000 watt peaks This woofer has a propriety reduced-depth frame This woofer has a dual 4 Ohm voice coil The sensitivity is 91 db