Pyle-Pro PDS682 3'' Titanium 8 Ohm Horn Bolt On Driver Midrange/Tweeter Compression Horn Driver - Frequency Response:600Hz-18KHz - Overall Dimensions: 7'' Diameter x 3.2'' Depth Titanium Diaphragm - Sensitivity:105db 1W/1M Terminals 205-Type - 8 Ohm Impedance 3'' (50.8mm) Flat Aluminum Voice Coil - 300 Watts Watts Rms /600 Watts Peak Power Handing 50oz Magnet Structure - Fits Horns With Four M6 Threaded Holes 90 Apart on 4'' (102mm) Diameter Circle