Configuration; 2-way Active speaker system Freq Response(-10dB); 50-20 KHz Sensitivity (1W@1m); 97dB Nominal Impedance; 4 ohms Amplifier; LF 150 Watts HF 30 Watts dispersion(HXV); 90°X45° Crossover Freq; 3.5 KHz Low Frequency; 12" Woofer High Frequency; 1.35" titanium diaphragm compression driver Input Connector; USB MP3 Player/MIC/RCA Casing Dimension(WXDXH); 475 X 380 X 650mm