Check the listing for details. Satori 1" Beryllium Dome Tweeter TW29B-B SB Acoustics 4 Ohm. Condition: New. Listed at 330.00 USD. Satori TW29B-B 29mm Beryllium Dome Tweeter 4 OhmBeryllium dome for non-resonant high frequency extensionTwo part aluminium faceplate with integrated mechanical decouplingDual balanced compression chambers for improved dynamicsDual copper caps for absolute minimum voice coil inductance and minimum phase shiftNon-reflective cast aluminium chamber with optimized damping for improved dynamicsShallow flow optimized magnet structure for optimum coupling to rear chamberCCAW voice coil for low moving massLong life silver lead wiresLow resonance frequency for extended range Specifications:Nominal Impedance 4 ΩDC resistance, Re 3.0 ΩVoice coil inductance, Le 0.02 mHEffective piston area, Sd 9.6 cm2Voice coil diameter 29.0 mmVoice coil height 2.0 mmAir gap height 2.5 mmLinear coil travel (p-p) 0.5 mmMoving mass incl. air, Mms 0.46 gFree air resonance, Fs 600 HzSensitivity (2.83V/1m) 92 dBForce factor, Bl 2.0 TmRated power handling* 80 WNet weight 0.53 kg