MAIN CHANNEL:2WX2(RMS)4(OHM) SUB-WOOFER:4W(RMS)4(OHM) SPEAKERS:3INCH+2.5INCHX2 SATELLITE CHANNEL:180Hz-18KHz SUB-WOOFER:45Hz-200Hz DIMENSION(SUB-WOOFER):140X135X135MM (MAIN SATELLITE):91.5X87X87MM CARTON SIZE:506X422X550MM/4SETS