Specification:  Power Output:------------------------------------------------------RMS48W (18W+15Wx2)Subwoofer: ---------------------------------------------------------18WSatellite: -------------------------------------------------------------15Wx2Speaker Driver: --------------------------------Woofer: 4 inch; Satellite: (3 inch+1inch)  x 2Subwoofer Speakers: -------------------------------------------30Hz-180HzSatellite Speakers:------------------------------------------------180Hz-18KHzSeparation: --------------------------------------------------------->=45dBS/N ratio: ------------------------------------------------------------>=75dB