Configuration: 2-way Active speaker system Freq Response(-10dB): 43-20 KHz Sensitivity (1W@1m): 98dB Nominal Impedance: 4 ohms Rated power: LF 180 Watts Max. Power: HF 30 Watts dispersion(HXV): 90°X45° Crossover Freq: 2.5 KHz Low Frequency: 15" Woofer High Frequency: 1.35" titanium diaphragm compression driver Input Connector: USB MP3 Player/MIC/RCA Dimension(WxDxH): 530 X 430 X 795mm