FAITAL PRO FD371-8 4-inch Bullet Tweeter HF Drivers Professional Audio Systems 8-Ohms 35 Watts Rms 70 Watts Max || The FAITAL PRO FD371-8 is a high-frequency bullet tweeter. This tweeter is designed for use in professional audio systems that require controlled directivity, high output, and a smooth frequency response || NOMINAL SPECIFICATIONS || Overall Diameter : 115.2/102 mm (4.54/4.0 in) || Bolt Circle Diameter : 107 mm (4.21 in) || Baffle Cutout Diameter : 91 mm (3.58 in) || Depth : 79 mm (3.11 in) || Flange and gasket Thickness : 5.5 mm (0.22 in) || Net Weight : 1.3 kg (2.8 lb) || Shipping Box (Single carton box) : 150 x 123 x 102 mm (5.9 x 4.8 x 4.0 in) || Shipping Weight : 1.3 kg (2.9 lb) || || TECHNICAL PARAMETERS || Nominal Impedance : 8 Ohm || Minimum Impedance : 6.6 Ohm || AES Power Handling (1) : 35 W || Maximum Power Handling (2) : 70 W || Minimum Crossover Frequency (3) : 2.6 kHz || Sensitivity (1W/1m) (4) : 107 dB || Frequency Range : 2.6÷20 kHz || Dispersion Angle : 40° || Voice Coil Diameter : 37 mm (1.46 in) || Winding Material : Al || Former Material : Kapton || || TECHNICAL PARAMETERS || Diaphragm Material : Ketone Polymer || Diaphragm Shape : Annular || Winding Depth : 2.1 mm (0.08 in) || Magnetic Gap Depth : 2.6 mm (0.10 in) || Flux Density : 1.5 T || Magnet : Ferrite Ring || Re : 5.5 Ohm || Phase Plug Design : Annular || NET Air Volume filled by HF Driver : 0.3 dm^3 (0.011 ft^3) || || Brand : FAITAL PRO || Model Number : FD371-8 | FD371 || UPC : 810130951444 || PART NUMBER (P/N) Faston Terminals - 8 Ohm Version : 374110 || NOTES || (1) 2 Hours Test According to AES 2-1984 Rev. 2003 || (2) Maximum power is defined as 3dB greater than nominal power || (3) 12 dB/oct or higher slope high-pass filter || (4) Averaged within the frequency range ||