10-inch Champion Series PRO subwoofer with 3000 Watts maximum (800 nominal) power handling * Basalt/carbon fiber reinforced IMPP cone with fiber-woven aramid surround * Dual 4-ohm voice coil for 2 or 8 ohm operation * 20 Hz to 150 Hz frequency response with 90 dB sensitivity * 169.2 millimeter mounting depth