Power-satellite: RMS15W? Subwoofer: RMS30W Frequency Response: 50Hz-20KHz Power Supply:110V-220V/50Hz-60Hz S/N Ratio:81db Impedance:4 Drive Units:5"+3"? Dimension-satellite:125(W)X133(D)X210(H)MM Dimension-subwoofer:225(W)X225(D)X240(H)MM Dimension-Color box:433(W)X294(D)X272(H)MM Dimension-Carton box:605(W)X445(D)X565(H)MM