Cadence Acoustics UDB122 600 Watt Peak Single 12-Inch 2 Ohm Passive Subwoofer Enclosure Cadence UDB122 single 12-inch passive subwoofer enclosure Power Handling: 300W RMS / 600W Peak Frequency Response: 25Hz - 1.5 kHz Sensitivity: 92dB @ 1w/1m SPL