PRO Driver Tweter JIC DA 51 Speaker Diameter Voice Coil = 50.8/ 2inch mm Throat Diameter = 50.8 mm / 2 inch Impedansi = 8 ohm Program Power = 120 W Baut Sensitivity (1w/1m) = 109 dB Frequency Range = 0.6k - 20k Voice Coil Material = Round Aluminium Wire Voice Coil Former = Kapton