RMS: woofer 30W Satellite: 5 x 10W Frequency response: 40Hz - 20KHz Channel crosstalk: > 50dB S/N ratio: >70dB Speaker system: 5.25" woofer on main unit 5 x 3" drivers on satellite units Product size Subwoofer: W155 x H300 x D280mm Satellite Speaker: W94 x H160 x D104mm