Cadence Acoustics XLERATOR8.2 8" 360W Active Subwoofer Enclosure, Set of 2 Double 8" Passive Subwoofer Enclosure RMS Power: 160 Watts Peak Power: 360 Watts Frequency Response: 20Hz - 200Hz|SPL @ 1w/1m: 72dB Impedance: 2 ohm