50W-100W per channel; 5.25 poly woofers with butyl rubber surrounds & ferrofluid-cooled dome tweeters; Mounting provision for IR device; Dual 5.25, 2-way rectangular design; Imp: 8ohm nominal; Freq resp: 45Hz-20kHz ; Sensitivity: 91dB @ 1W/1m; Overall dim: 15.75H x 9W; Required cutout: 14.44H x 7.88W; Required depth: 3.5; Each;