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APT:50
Use with APT3 adaptor for 1 3/8” 18 NEF ext. for mounting on coaxial speakers or screw-on horns.

SPECIFICATION
Throat Size 1", 25.4mm
Nominal Impedance* 8 ohms
Power Rating** 45W @ 3.5kHz, 85Wrms @5kHz

Resonance 2.5kHz
Usable Frequency Range 3.5Hz - 20kHz
Sensitivity*** 105dB
Magnet Weight 7.75oz, 0.22kg
Voice Coil Diameter 1.0" / 25.4mm

THIELE & SMALL PARAMETERS
DC Resistance (Re) 6.3
Coil Inductance (Le) 1.5mH

MOUNTING INFORMATION
Overall Diameter 2.75", 70mm
Mounting Thread Use Apt Horn or Adaptor
Depth 1.57", 40mm
Weight 1.5 lbs, 682 kg

MATERIALS OF CONSTRUCTION
Diaphragm Material Phenolic
Magnet Compostion Ferrite