![background image](/i/scanspeak/81577/scanspeak-22w-4851t00/h/scanspeak-22w-4851t00-001.png)
N.C. Madsensvej 1 6920 Videbæk Denmark Phone: +45 6040 5200 www.scan-speak.dk
WOOFER
22W/4851T00
The Revelator woofers and subwoofers features very rigid cones in paper or aluminium
that operates as a piston over a wide frequency range, in combination with Scan-
Speaks low-loss linear suspension and the patented Symmetrical Drive (SD-1) it
results in very low distortion and a smooth and well behaved frequency response as
well as perfect transient reproduction.
KEY FEATURES:
Patented Symmetrical Drive Motor Design
Low-Loss linear suspension
Die cast Alu Chassis vented below spider
Rigid Paper Cone
Low Damping SBR Rubber Surround
Ferrite Magnet System w. Rubber Boot
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]
21 Hz
Mechanical Q factor [Qms]
5.20
Electrical Q factor [Qes]
0.23
Total Q factor [Qts]
0.22
Force factor [Bl]
8.2 Tm
Mechanical resistance [Rms]
0.81 kg/s
Moving mass [Mms]
32.5 g
Suspension compliance [Cms]
1.85 mm/N
Effective diaph. diameter [D]
167 mm
Effective piston area [Sd]
220 cm²
Equivalent volume [Vas]
126 l
Sensitivity (2.83V/1m)
89 dB
Ratio Bl/√Re
4.26 N/√W
Ratio fs/Qts
93 Hz
Electrical Data
Nominal impedance [Zn]
4 Ω
Minimum impedance [Zmin]
4.5 Ω
Maximum impedance [Zo]
87.4 Ω
DC resistance [Re]
3.7 Ω
Voice coil inductance [Le]
0.3 mH
Power Handling
100h RMS noise test (IEC 17.1)
170 W
Long-term max power (IEC 17.3)
- W
Voice Coil and Magnet Data
Voice coil diameter
50 mm
Voice coil height
24 mm
Voice coil layers
2
Height of gap
6 mm
Linear excursion
± 9 mm
Max mech. excursion
± 14 mm
Unit weight
3.6 kg