Polk Audio DXi1201 720W Peak Single 12" DXi Series Ported Subwoofer Enclosure 720W Single 12" Ported Subwoofer Enclosure Power Handling: Peak: 720 Watts / RMS: 360 Watts Recommended power range: 150 - 360 watts RMS @ 2 ohms Final Impedance: 2 ohms Preloaded with single 12" DXi Series Subwoofers