Paradigm Cinema Sub<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Single driver， bass reflex， high-velocity low-turbulence resitive ports， built-in amplifier</li><li>Flexible positioning: gloss side up or cloth side up with feet</li><li>Subwoofer Cut-Off Frequency 300 watts Dynamic Peak; 100 watts RMS Sustained</li><li>Sub / Sat Phase Switch - 0° or 180°; Impedance:10k ohms</li><li>Two RCA (L/R-Mono) for L/R lineout or Sub-Out/LFE-Out of receiver/processor or other line-level source</li></ul></div><img src="http://ecx.images-amazon.com/images/I/21sLJrhq0fL.jpg" noproxy>