
N.C. Madsensvej 1 · 6920 Videbæk · Denmark · Phone: +45 6040 5200 · www.scan-speak.dk
MIDWOOFER
18W/8535-01
This unit is an improved version of the highly praised 18W/8535-00 midwoofer, where
a new aluminum chassis and an updated cone as wells as a few other details are
introduced, these updates improves mechanical stability and sound performance. High-
quality magnet system design with patented Symmetric Drive(SD-1) continues to be
key feature.
KEY FEATURES:
·
Patented Symmetrical Drive Motor Design
·
38mm Voice Coil
·
Low Damping SBR Rubber Surround
·
Coated Air Dried Paper/Carbon Fibre Cone
·
Low-Loss linear suspension
·
Aluminium Chassis
T-S Parameters
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: December 20, 2012.
Resonance frequency [fs]
25 Hz
Mechanical Q factor [Qms]
2.1
Electrical Q factor [Qes]
0.46
Total Q factor [Qts]
0.38
Force factor [Bl]
5.9 Tm
Mechanical resistance [Rms]
1.33 kg/s
Moving mass [Mms]
17.2 g
Compliance [Cms]
2.30 mm/N
Effective diaph. diameter [D]
136 mm
Effective piston area [Sd]
145 cm²
Equivalent volume [Vas]
68.9 l
Sensitivity (2.83V/1m)
87.2 dB
Ratio Bl/√Re
2.44 N/√W
Ratio fs/Qts
67.4 Hz
Electrical Data
Voice Coil & Magnet Data
Nominal impedance [Zn]
8 Ω
Minimum impedance [Zmin]
6.8 Ω
Maximum impedance [Zo]
32 Ω
DC resistance [Re]
5.85 Ω
Voice coil inductance [Le]
0.33 mH
Power Handling
100h RMS noise test (IEC 17.1)
70 W
Long-term max power (IEC 17.3)
190 W
Voice coil diameter
38 mm
Voice coil height
15 mm
Voice coil layers
2
Height of gap
5 mm
Linear excursion
± 5 mm
Max mech. excursion
± 10 mm
Unit weight
1.1 kg