MAIN CHANNEL:8W(RMS)x2(RMS) SUB-WOOFER:12W(RMS) SPEAKERS:4INCH+3INCHX2 SATELLITE CHANNEL:160Hz-18KHz SUB-WOOFER:45Hz-180Hz DIMENSION(SUB-WOOFER):160X280X250MM (MAIN SATELLITE): 100X120X160MM