Features: 1) Output power: 30W + 10W x 2 2) Impedance: 4 ohms 3) Frequency response: 40Hz - 150Hz, 150Hz - 20KHz 4) S/N: 75dB 5) Subwoofer size (L x W x H): 330 x 160 x 270mm 6) Satellite size (L x W x H): 130 x 110 x 180mm Outer packing: 3sets/ctn Carton dimensions (L x W x H): 715 x 485 x 410mm Carton volume: 0.1422cbm N.W.: 25kg G.W.: 26kg