Configuration: 2-way Active speaker system Freq Response(-10dB): 48-20KHz Sensitivity (1W@1m): 97dB Nominal Impedance: 4 ohms Amplifier: LF 150 Watts HF 25 Watts dispersion(HXV): 90°X45° Crossover Freq: 2.5 KHz Low Frequency: 12" Woofer High Frequency: 1" titanium diaphragm compression driver Input Connector: USB MP3 Player/MIC/RCA Dimension(WxDxH): 495 X 435 X 730mm