High Quality Driver PD01:
Throat diameter: 1" (25mm)
Mounting type: screw on 1-3/8"
Nominal impedance: 8 ohms
Power rating: 50 watts RMS
Sensitivity: 105 dB
Frequency response: 1.5k-20kHz
Recommended crossover: 2.5kHz or higher(12dB/oct. Minimum)
Diaphragm material: phenolic
Voice coil: 1" (25mm) , polyimide film, copper winding
Magnet weight: 11 oz (ferrite)