Configuration：2-Way full range Ventedloudspeaker systemFreq Response(-10dB):40-20 KHz Sensitivity (1W@1m):98dBNominal Impedance:8 ohms Amplifier: 250Watts 600 Wattsdispersion(HXV):90°X60° Crossover Freq:2.5KHz  Low Frequency:15"Woofer  High Frequency: 1.75" titanium diaphragm compression driver Input Connector: USB Player/MIC/RCACasing Dimension(WxDxH):460 X 420 X 765mm