Exit Throat Diameter: 50.8 mm Rated Impedance: 8 Ω Power handling capacity: 1 Continuous Program above 1 kHz: 160 W AES above 1 kHz: 80 W Sensitivity 1W, 1M on-axis on horn 2: 108 dB Frequency Range -3dB: 400 Hz - 20000 Hz Distortion 4 2nd harmonic: 5.0 % 3nd harmonic: 0.5 % Diaphragm Material: Pure Titanium Diaphragm Thickness: 0.05 mm Suspension Material: Pure Titanium Suspension Design: Progressive, Eliptical Alternating Mass Minimum Impedance: 8.4 Ohms @ 3 kHz Voice Coil Diameter: 74.4 mm Voice Coil Material: Edgewound Aluminium Voice Coil Former Design and construction material: Direct Drive / Nomex Number of layers: 1 Kind of layer: Outside Electrical polarity: A positive voltage applied on the red terminal produces forward cone motion. BL Factor: BL 11.8 T · m Flux Density: 1.8 Tesla (18.000 Gauss) Phase Plug Design: 3-slot radial Phase Plug Material: Pure Aluminum Magnetics: Ceramic Voice Coil Demodulation Gap: Mounted Copper Ring