SB ACOUSTICS SB26STC-C000-4, 25mm TEXTILE DOME TWEETERFeatures Copper cap for reduced voice coil inductance and minimum phase shift Non-reflective rear chamber with optimized damping for improved dynamics Flow optimized vented pole piece for optimum coupling to rear chamber Fine weave soft fabric dome for smooth frequency response Saturation controlled motor system for low distortion CCAW voice coil for low moving mass Long life silver lead wires Low resonance frequency Specs Nominal Impedance 4 Ω DC resistance, Re 3.2 Ω Voice coil inductance, Le 0.4 mH Effective piston area, Sd 6.2 cm2 Voice coil diameter 25.4 mm Voice coil height 1.3 mm Air gap height 2.5 mm Linear coil travel (p-p) 1.2 mm Moving mass incl. air, Mms 0.3 g Free air resonance, Fs 750 Hz Sensitivity (2.83 V / 1 m) 91.5 dB Mechanical Q-factor, Qms 3.0 Electrical Q-factor, Qes 1.78 Total Q-factor, Qts 1.12 Force factor, Bl 1.6 Tm Rated power handling* 120 W Magnetic flux density 1.15 T Magnet weight 0.22 kg Net weight 0.53 kg * IEC 268-5, high-pass Butterworth, 2600 Hz, 12 dB/oct.
