Output Power: 115W(15W*5+40w*1) Frequency Response: 40Hz - 20KHz Channel Crosstalk: >65dB S/N Ratio: >75dB Per Front Speaker: 1.5"tweeter*1+3"full-range driver*1 Per Rear Speaker: 3"tweeter*1+3"full-range driver*2 Center Speaker: 1.5"tweeter*1+3"full-range driver*2 Subwoofer Speaker: 6.5" woofer*1 Product Size Subwoofer: W200*H330*D360mm Satellite Speaker: W130*H195*D135mm Rear Speaker: W105*H805*D111mm CEN: W355*H110*D130mm Packing Size: L888*W458*H415mm Packing: 1set/carton Q`TY 40′: 345set 40′HQ: 410set