Pyle-Pro PDS221 300 Watt 1.12-inch Titanium Compression Horn Driver (Screw-on Type, 8 Ohm) 150 Watts RMS / 300 Watts Peak Power Handling - 20 oz. Magnet Structure Midrange / Tweeter Compression Driver - 1.12'' (28.6mm) Flat Aluminum Voice Coil - Titanium Diaphram Sensitivity (1w/1m): 102dB SPL - Frequency Response:: 800Hz ~ 20kHz Fits Horns with 1 3/8" x 18 TPI Threads - 3.2 Diameter x 3 Depth 8 Ohm Impedance Frequency response: 800Hz-20kHz 150 watts RMS/ 300 watts peak 8 ohm impedance 20 oz. magnet structure Terminals 205-Type Frequency response: 800Hz-20kHz 150 watts RMS/ 300 watts peak 8 ohm impedance 20 oz. magnet structure Terminals 205-Type