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  • Model: Scan-Speak D2905/990000
  • Shipping Weight: 0.5kg


TWEETER D2905/990000

D2905/990000 - The original Revelator tweeter - is build on the heritage of our
successful Classic tweeters, continuing with Symmetrical Drive (SD-2) motor design which includes copper caps, the non resonant chamber and the special treated textile 29mm dome and further optimized optimized for the ultimate performance utilizing a large machined aluminium wave guide front.

— Excellent Sound Reproduction
— Patented Symmetrical Drive (SD-2) motor
— Large Wave Guide Front
— 1" Textile Dome Diaphragm
— Wide Surround Textile Diaphragm
— Black Anodized Mashined Alu Face Plate

T-S Parameters
Resonance frequency [fs] 500 Hz
Mechanical Q factor [Qms] 4.83
Electrical Q factor [Qes] 0.72
Total Q factor [Qts] 0.63
Force factor [Bl] 3.5 Tm
Mechanical resistance [Rms] 0.29 kg/s
Moving mass [Mms] 0.45 g
Suspension compliance [Cms] 0.23 mm/N
Effective diaph. diameter [D] 33 mm
Effective piston area [Sd] 8.5 cm▓
Equivalent volume [Vas] 0.02 l
Sensitivity (2.83V/1m) 91 dB
Ratio Bl/√Re 1.61 N/√W
Ratio fs/Qts 795 Hz
Electrical Data
Nominal impedance [Zn] 6 L
Minimum impedance [Zmin] 5.6 L
Maximum impedance [Zo] 36.1 L
DC resistance [Re] 4.7 L
Voice coil inductance [Le] 0.01 mH
Power Handling
100h RMS noise test (IEC 17.1)* 225 W
Long-term max power (IEC 17.3)* - W
*Filter: 2. order HP Butterworth, 2.8 kHz
Voice Coil and Magnet Data
Voice coil diameter 28 mm
Voice coil height 3.3 mm
Voice coil layers 2
Height of gap 2.5 mm
Linear excursion ▒ 0.4 mm
Max mech. excursion ▒ 1.5 mm
Unit weight kg

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