40W PA Speaker Horn Driver with 70V Transformer 
Specifications:
Exit Diameter: 1" (fits 1-3/8” -18 TPI threaded horn)
Power Handling (RMS): 5W, 10W, 20W, 40W
Impedance: 70v
Frequency Response: 160 - 8000 Hz
Sensitivity: 107 dB 1W/1m
Voice Coil Diameter: 2"
Voice Coil Material: Kapton / Copper
Overall depth: 169mm
Weight: 5 Lbs.