N.C. Madsensvej 1 6920 Videbæk Denmark Phone: +45 6040 5200 www.scan-speak.dk
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.
KEY FEATURES:
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
Notes:
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.
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 cm²
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 Ω
Minimum impedance [Zmin]
5.6 Ω
Maximum impedance [Zo]
36.1 Ω
DC resistance [Re]
4.7 Ω
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
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
TWEETER D2905/990000 Advanced Parameters (Preliminary) Electrical data: Resistance [Re'] Mechanical Data -Ω Force Factor [Bl] Free inductance [Leb] - mH Moving mass [Mms] Bound inductance [Le] - mH Compliance [Cms] Semi-inductance [Ke] - SH Mechanical resistance [Rms] Shunt resistance [Rss] -Ω