N.C. Madsensvej 1 6920 Videbæk Denmark Phone: +45 6040 5200 www.scan-speak.dk
MIDWOOFER
15WU/4741T00
The Illuminator midranges and midwoofers are in every aspect unusual designs with
the open construction, the extremely long linear excursion and patented under-hung
SD-3 (Symmetrical Drive) neodymium motor system, which due to copper caps and its
construction ensures very low distortion, adding the unique patented cones, low-loss
linear suspension the result is: “The Very Best Money Can Buy”!
KEY FEATURES:
Under-Hung Neodymium Motor Design
Patented Sandwich Paper Cone
Low-loss linear suspension
Patented Symmetrical Drive (SD-3)
Exceptionally Long Linear Excursion
Patented Design
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]
34 Hz
Mechanical Q factor [Qms]
3.47
Electrical Q factor [Qes]
0.25
Total Q factor [Qts]
0.23
Force factor [Bl]
6 Tm
Mechanical resistance [Rms]
0.80 kg/s
Moving mass [Mms]
13 g
Suspension compliance [Cms]
1.69 mm/N
Effective diaph. diameter [D]
108 mm
Effective piston area [Sd]
92 cm²
Equivalent volume [Vas]
20.0 l
Sensitivity (2.83V/1m)
85.9 dB
Ratio Bl/√Re
3.35 N/√W
Ratio fs/Qts
146 Hz
Electrical Data
Nominal impedance [Zn]
4 Ω
Minimum impedance [Zmin]
4.6 Ω
Maximum impedance [Zo]
47.6 Ω
DC resistance [Re]
3.2 Ω
Voice coil inductance [Le]
0.5 mH
Power Handling
100h RMS noise test (IEC 17.1)
80 W
Long-term max power (IEC 17.3)
150 W
Voice Coil and Magnet Data
Voice coil diameter
42 mm
Voice coil height
8 mm
Voice coil layers
4
Height of gap
20 mm
Linear excursion
± 9 mm
Max mech. excursion
± 13 mm
Unit weight
1.7 kg
