Home < Budget Home Theatre - Satellite < SN 640 HT Budget Home Theatre-Satellite-Subwoofer System for AV Receiver SN 640 HT SN 640 HT Specification: 5 x 100 watts RMS per channel Frequency Response 30Hz-200khz Spl 88 db/W/M ± 3db 10" Active Sub-woofer 0.05 THD module ±3db 130RMS @ 8 ohms