PA SPEAKER,715B Model No. 715BDriver Unit3"x2+8"Rated Impedance8 OhmsRated Power50WLong Term Power180WFrequency Response50Hz-20000HzSensitivity91dB¡À3dBCrossover Frequency3000HZNet Weight7.8kg/pcGross Weight18kg/PRDimension266x450x251(mm)Carton Size545x640x347(mm)*driver:3"x2+8" *impedance:8Ω *power rating:50w *frequency response:50Hz-20kHz *sensitivity:91dB±2dB *N.W.: 15.4kg *G.W.: 17.5kg