Kicker 48CWR82 CompR Series 8" subwoofer with dual 2-ohm voice coils

8" Dual 2 ohms CompR/CWR Series Subwoofer Power Handling: Peak: 600 watts RMS: 300 watts Polypropylene Cone Ribbed Santoprene Surround Forced Air Cooling to help our subs run 25% cooler than before High Temperature Voice coil 10.5 mm Xmax Ferrite magnet motor structure Frequency Response: 25 - 500 Hz Resonance Frequency (Fs): 44.1 Hz Sensitivity: 82.1 dB Sealed box volume: 0.4 cubic feet Ported box volume: 0.8 cubic feet Top-mount depth: 4 1/8" Cutout diameter: 7"