System Type: 1 x 12" Professional Active Battery Speaker Frequency Response: 55Hz-20KHz (-10 dB) Sensitivity (1W/1m): 96dB Woofer: 12" (75mm voice coil) ferrite driver Tweeter: Ferrite, 1×1” port tweeter/36mm voice coil Maximum sound pressure level (SP L): 123dB/129dB Impedance (Ω): 8Ω Peak power (W): 30-100W Power (W): 500W Power supply mode: external 12V/20A battery/AC-220V Dimensions (W×D×H): 410×368×876(mm) Product net weight (kg): 32.5kg