Features: 1) Output power: 40W + 15W x 2 2) Impedance: 4 ohms 3) Frequency response: 30Hz-150Hz, 150Hz-20kHz 4) S/N: 80dB 5) Subwoofer size (L x W x H): 400 x 185 x 350mm 6) Satellite size (L x W x H): 150 x 120 x 320mm Outer packing: 2sets/ctn Carton dimensions (L x W x H): 850 x 470 x 420mm Carton volume: 0.1678cbm N.W.: 23kg G.W.: 24kg