Cadence SubWoofer CM12D2 600W 12? Specifications RMS Power Handling: 300 watts PEAK Power Handling: 600 watts Frequency Response: 28 - 800Hz Mica-filled polypropylene cone System Impedance: SVC DUAL 2 Ohm Stamped steel basket High temperature KSB voice coil CMD Motor with 54 oz. Magnet Top-mount depth: 14,2cm SPL @ 1w/1m : 88 dB