This slot-loading vented bypass subwoofer is specifically tuned to compliment all full-range Control Contractor Series systems; includes a unique passive attenuation called the Load Baffle, a special geometric combination of rigid and pliable materials. 10”, dual voice coil, 38 Hz to 160 Hz, 340 watts continuous, 100 dB, 8 ohms, dual-slope 80 Hz and 160 Hz low-pass crossover to woofer, 160 Hz high-pass crossover to satellite outputs, vinyl-covered particle board enclosure, spring-loaded input terminals, 15.5”H x 23”W x 13.5”D, 42 lb.