Infinity TSS-800CHR Home Theatre System - 5.1-channel . Tweeter size: 19 mm, Mid-range driver size: 63.5 mm, Woofer size: 254 mm. Peak Music Power Output (PMPO): 500 W, Sensitivity: 84 dB, Signal-to-Noise Ratio (SNR): 24 dB. Type: Home theatre speakers, Audio output channels: 5.1, Subwoofer dimensions (WxHxD): 273 x 425 x 400 mm