Output Power: 10W(5W*+2W*2) Frequency Response: 60Hz - 20KHz Channel Crosstalk: >35dB S/N Ratio: >70dB Product Size Subwoofer: L121*W194 *H132mm Satellite Speaker: L76*W98*H95mm Packing Size: L680*W490*H524mm Packing: 16set/carton Q`TY 20′: 2565set 40′: 5315set 40′HQ: 6231set