Line Level Input Sensitivity 200 mV mono Line Level Input Impedance 50k ohms Speaker Level Input From left / right speaker terminals of receiver, amplifier or main / satellite speakers Speaker Level Input Sensitivity 1.5V stereo Internal Volume 56 L / 1.98 cu ft Height, Width, Depth 42.5 x 38.7 x 52 cm 16-3/4 x 15-1/4 x 20-1/2 in Weight 25.5 kg / 56 lb each