SB ACOUSTICS SB29BNC-C000-4, 29mm BERYLLIUM DOME NEODYMIUM TWEETERFeatures Beryllium dome for non-resonant high frequency extension Copper cap on pole piece for reduced voice coil inductance and minimum phase shift CCAW voice coil for low moving mass Internal pressure equalization and flow resistor for non-resonant coupling of cavities Long life flexible lead wires Inherently shielded neodymium motor system Compact design Low resonance frequency Specs Nominal Impedance 4 Ω DC resistance, Re 3.0 Ω Voice coil inductance, Le 0.05 mH Effective piston area, Sd 9.6 cm2 Voice coil diameter 29.0 mm Voice coil height 2.0 mm Air gap height 2.5 mm Linear coil travel (p-p) 0.5 mm Moving mass incl. air, Mms 0.46 g Free air resonance, Fs 950 Hz Sensitivity (2.83V/1m) 95 dB Mechanical Q-factor, Qms 1.36 Electrical Q-factor, Qes 1.40 Total Q-factor, Qts 0.69 Force factor, Bl 2.6 Tm Rated power handling* 80 W Magnetic flux density 1.2 T Magnet weight 31 g Net weight 0.17 kg * IEC 268-5, high-pass Butterworth, 2600 Hz, 12 dB/oct
