Kicker CompR 48CWR104 CompR Series 10" subwoofer with dual 4-ohm voice coils

10" Dual 4 ohms CompR/CWR Series Subwoofer Power Handling: Peak: 800 watts RMS: 400 watts Polypropylene Cone Santoprene Rubber Surround Forced Air Cooling to help our subs run 25% cooler than before High Temperature Voice coil 14 mm Xmax Double Stacked Ferrite magnet motor structure Frequency Response: 25 - 500 Hz Resonance Frequency (Fs): 34.9 Hz Sensitivity: 84.6 dB Sealed box volume: 0.8 cubic feet Ported box volume: 1.25 cubic feet Top-mount depth: 5-1/4" Cutout diameter: 9-1/8"