Klipsch Reference R-10SW 10" 300w Powered Subwoofer (Black) Powerful 10" copper-spun front-firing woofer All-digital amplifier delivers 300 watts of dynamic power Equally impressive with music and movies Low pass crossover and phase control,Dimensions:14(H) x 12.5(W) x 15.7(D) Inches Line/LFE inputs for compatibility with most receivers