Configuration: 2-way Active speaker system Freq Response(-10dB): 50-20KHz Sensitivity (1W@1m): 97dB Nominal Impedance: 4 ohms Amplifier: LF 150 Watts HF 30 Watts dispersion(HXV): 90°X45° Crossover Freq: 3.5KHz Low Frequency: 12" Woofer High Frequency: 1.35" titanium diaphragm compression driver Input Connector: USB MP3 Player/MIC/RCA Casing Dimension(WXDXH): 425 X 345 X 645mm