Subwoofer: Power output: 30W Frequency response: 35Hz to 18kHz Driver unit: 5.5-inch S/N ratio: 62dB Impedance: 4 Ohms Dimensions(L x W x H): 165 x 320 x 275mm FM/ without remote control Satellite: Power output: 15W x 2 Frequency response: 150Hz to 15kHz Driver unit: 3-inch x 2 S/N ratio: 80dB Universal power supply: 100 to 240V, 50/60Hz Satellite(L x W x H): 130 x 150 x 200mm