Paradigm Cinema Sub Single driver, bass reflex, high-velocity low-turbulence resitive ports, built-in amplifier Flexible positioning: gloss side up or cloth side up with feet Subwoofer Cut-Off Frequency 300 watts Dynamic Peak; 100 watts RMS Sustained Sub / Sat Phase Switch - 0 or 180; Impedance:10k ohms Two RCA (L/R-Mono) for L/R lineout or Sub-Out/LFE-Out of receiver/processor or other line-level source