Cadence Acoustics FXB12S2 1000-Watt Peak 4-Ohm Super Slim Passive Subwoofer Enclosure Cadence FXB12S2 dual 12-inch passive subwoofer enclosure Power Handling: 800W RMS / 1000W Peak Frequency Response: 40Hz - 500Hz Sensitivity: 92dB @ 1w/1m SPL Dimensions (L x W x H): 16.75 x 7.5 x 13.25 inches