Configuration: Vented subwoofer Freq Response(-10dB): 38-800Hz Sensitivity (1W@1m): 97dB Nominal Impedance: 8 ohms Rated power: 400 Watts Max. Power: 800 Watts dispersion(HXV): / Crossover Freq: 125Hz Low Frequency: 18" Woofer Mid Frequency: / High Frequency: / Input Connector: 1 X Speakon (4P) Output Connector: 1 X Speakon (4P) Dimension(WxDxH): 590 X 600 X 810mm