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Used briefly, condition accordingly to pictures.
KEY FEATURES: Patented Symmetrical Drive Motor Design Low-Loss linear suspension Die cast Alu Chassis vented below spider Sliced Cone (Controls Cone Breakups) Low Damping SBR Rubber Surround Large Ferrite Magnet SystemNotes: IEC specs. refer to IEC 60268-5 third edition. All Scan-Speak products are RoHS compliant. Data are subject to change without notice. Datasheet updated: January 29, 2011.T-S ParametersResonance frequency [fs] 28 HzMechanical Q factor [Qms] 5.10Electrical Q factor [Qes] 0.39Total Q factor [Qts] 0.36Force factor [Bl] 6.8 TmMechanical resistance [Rms] 0.60 kg/sMoving mass [Mms] 17.5 gSuspension compliance [Cms] 1.85 mm/NEffective diaph. diameter [D] 138 mmEffective piston area [Sd] 150 cmEquivalent volume [Vas] 58.2 lSensitivity (2.83V/1m) 87 dBRatio Bl/Re 2.82 N/WRatio fs/Qts 77 HzElectrical DataNominal impedance [Zn] 8 Minimum impedance [Zmin] 6.4 Maximum impedance [Zo] 81.6 DC resistance [Re] 5.8 Voice coil inductance [Le] 0.35 mHPower Handling100h RMS noise test (IEC 17.1) 60 WLong-term max power (IEC 17.3) – WVoice Coil and Magnet DataVoice coil diameter 38 mmVoice coil height 18 mmVoice coil layers 2Height of gap 5 mmLinear excursion 6.5 mmMax mech. excursion 11 mmUnit weight 1.7 kg
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