This Eminence Asd1001s Is A 1"" High Frequency Compression Driver That Handles 50 Watts Rms 2, 5khz, This Is An 8 Ohm Screw-on Type High Frequency Driver, Clean Sound Makes This An Affordable 1"" Replacement High Frequency Driver, Works Well For Mobile Dj Systems, Sound Reinforcement, Etc, Horn Throat Exit Diameter: 1"" / 25, 4mm, Impedance: 20, Frequency Response: 2, 5kHz - 19kHz, Power Rating 2, 5kHz: 50 Watts, Minimum Cut-off Frequency: 2, 5kHz 18Db, Sensitivity(2, 83v 1m on APT200): 104, 3dB, Voice Coil Diameter: 1, 357"" / 34mm, Voice Coil Former: Polyimide, Diaphragm Material: Diamond Titanium, Re: 6, 5 ohms, Le: 1, 0mH, SKU: TBALL8332