Pyle PDS342 1.35-Inch Titanium Horn Driver 8 Ohm 13/8-Inch x 18 TPI
Midrange/Tweeter Compression Horn Driver Titanium Diaphragm  1.35'' (34.4mm) Flat Aluminum Voice Coil  20 oz Magnet Structure  Frequency Response: 1kHz - 20kHz  Sensitivity: 104dB @ 1W/1M  8 Ohm Impedance  200 Watts RMS/400 Watts Peak  Terminals 205 Type  Fits Horns with 1 3/8'' x 18 TPI Threads