Configuration: Vented subwoofer Freq Response(-10dB): 38-2.5 KHz Sensitivity (1W@1m): 98dB Nominal Impedance: 8 ohms Rated power: 400 Watts Max. Power: 800 Watts dispersion(HXV): / Crossover Freq: 80-150Hz Low Frequency: 18" SUBWoofer Input Connector: 1 X Speakon (4P) Output Connector: 1 X Speakon (4P) Dimension(WxDxH): 580 X 500 X 665mm