Midrange/Tweeter Compression Horn Driver - Sensitivity:99db 1W/1M.Neodymium Magnet /Titanium Diaphragm - 8 Ohm Impedance.1'' (44.4mm) Flat Aluminum Voice Coil - 100 Watts RMS/200 Watts Peak.21 oz Magnet Structure - Terminals 205 Type.Frequency Response:2000Hz-20KHz - Fits Horns with 1 3/8'' x 18 TPI Threads This 1” horn driver may be small, but it packs a big punch, providing 200 watts peak power. It’s all because of the 21 oz. neodymium magnet with titanium diaphragm, ultimately achieving a frequency response of 2000 Hz to 20 kHz. The 1” flat aluminum voice coil provides rich mids and sweet highs. 205-type terminals, 8 ohm impedance. Fits horns with 1 3/8” x 18 TPI threads.