12" 4-ohm shallow subwoofer interlaced basalt and carbon reinforced IMPP cone 3-layer urethane and fiber-woven radial surround cast aluminum basket Air Suspension Control System eliminates traditional spider structure power range: 50-400 watts RMS (1,500 watts peak power) frequency response: 20-230 Hz sensitivity: 93 dB mounting depth: 3-1/4" sealed box volume: 0.5-1.0 cubic feet ported box volume: 0.65-1.0 cubic feet