Cadence Acoustics ZRS12-1000-2 12-Inch 2000 Watt Peak Single Voice Coil 2 Ohm Subwoofer Cadence ZRS12-1000-2 12-inch 2 ohm single voice coil subwoofer Power Handling: 1000W RMS/2000W Peak Frequency Response: 25Hz - 500Hz Sensitivity: 89dB @ 1w/1m Mounting Depth: 7.90-inch