Product typeHigh-frequency DriversNominal Diameter4 x 1 ", 101.6 x 25.4 mmVoice Coil1.75 ", 44.4 mmOverall diameter107 x 85 mmPitch Circle Diameter76.2 x 50.8 mmDepth122 mmNominal Impedance8 Ohm(s)Nominal Load Capacity80 Wmaximum rated load450 WSensitivity (horn 1 W / 1 m)112Frequency response500 -20000 Hzrecommended crossover frequency1000 HzVoice Coil CarrierKaptonDiaphragm materialpolyesterMagnetNeodymiumMounting holes4Diameter of fixing holesM5Pitch Circle Diameter (bolt on)76.2 x 50.8 mmWeight1 kg