D2905/9700 PDF - Madisound

TWEETER D2905/970000The Classic tweeters are among the many highly praised designs in Classic series. Theyhave enjoyed success over 3 decades. And still among the best tweeters available. TheD2905/9000 tweeter kick-started a new era with a line of very high quality 1"tweeters, today known as -9300, -9500, -9700 and -9800. Despite their many yearson the marked still used in many top High-End speakers around the world.KEY FEATURES: 1" Textile Dome Diaphragm Patented Symmetrical Drive (SD-2) motor Frequency Extension to above 30KHz Low Resonance Rear Chamber Black Painted Alu Face PlateT-S ParametersResonance frequency [fs]500 HzMechanical Q factor [Qms] 3.45Electrical Q factor [Qes] 0.54Total Q factor [Qts] 0.47Force factor [Bl]Mechanical resistance [Rms]Moving mass [Mms]Suspension compliance [Cms]Effective diaph. diameter [D]Effective piston area [Sd]Equivalent volume [Vas]Sensitivity (2.83V/1m)Ratio Bl/√ReRatio fs/Qts3.5 Tm0.41 kg/s0.45 g0.23 mm/N33 mm8.5 cm²0.02 l89.5 dB1.61 N/√W1068 HzNotes: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: February 22, 2011.Electrical DataNominal impedance [Zn]6 ΩMinimum impedance [Zmin]5.7 ΩMaximum impedance [Zo]34.6 ΩDC resistance [Re]4.7 ΩVoice coil inductance [Le]0.01 mHPower Handling100h RMS noise test (IEC 17.1)* 225 WLong-term max power (IEC 17.3)*- W*Filter: 2. order HP Butterworth, 2.8 kHzVoice Coil and Magnet DataVoice coil diameter28 mmVoice coil height3.3 mmVoice coil layers 2Height of gap2.5 mmLinear excursion± 0.4 mmMax mech. excursion± 1.5 mmUnit weight0.7 kgN.C. Madsensvej 1 6920 Videbæk Denmark Phone: +45 6040 5200 www.scan-speak.dk

TWEETER D2905/970000Advanced Parameters (Preliminary)Electrical data:Mechanical DataResistance [Re']- ΩForce Factor [Bl]- TmFree inductance [Leb]- mHMoving mass [Mms]- gBound inductance [Le]- mHCompliance [Cms]- mm/NSemi-inductance [Ke]- SHMechanical resistance [Rms]- kg/sShunt resistance [Rss]- ΩAdmittance [Ams]- mm/NN.C. Madsensvej 1 6920 Videbæk Denmark Phone: +45 6040 5200 www.scan-speak.dk