PRO Driver Tweter JIC DA 25 Speaker Diameter Voice Coil = 25.4 mm Throat Diameter = 25.4mm / 1 inch Impedansi = 8 ohm Program Power = 50 W Baut Sensitivity (1w/1m) = 106 dB Frequency Range = 1.5k - 20k Voice Coil Material = Round Aluminium Wire Voice Coil Former = Kapton