Scan-Speak 18W/8545-01
Mid Bass
7″ / 180 mm
Nominal diameter
25 Hz
Resonance
0.2
Q factor
88 dB
Sensitivity
± 6.5 mm
Linear excursion
120 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
25.0
Hz
Mechanical quality factor
QMS
1.55
Electrical quality factor
QES
0.22
Total quality factor
QTS
0.20
Large signal parameters
Maximum linear excursion
xmax
6.5
mm
Maximum excursion before damage
xlim
10.0
mm
Air volume displaced at xmax
VD
94
cm³
Power handling
P
100
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.39
mH
VC Diameter
42
mm
Winding height
HVC
19
mm
Magnet
Force factor
Bl
8.4
N/A
Motor constant
Bl/√RE
3.52
N/√W
Air gap height
HAG
6
mm
Diaphragm
Effective diameter
136
mm
Effective area
SD
145
cm²
Moving mass
MMS
18
g
Moving mass (without air load)
MMD
16.7
g
Material
Coated Air Dried Paper/Carbon Fibre
Suspensions
Stiffness
KMS
0.44
N/mm
Compliance
CMS
2300
µm/N
Equivalent volume to the compliance
VAS
68.6
L
Mechanical resistance
RMS
1.8
N·s/m
Surround material
SBR Rubber
Dimensions
Nominal diameter
7
″
180
mm
Volume occupied by the driver (estimated)
0.95
L
Net weight
2.3
kg
Frame material
Aluminium
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Export this driver to a simulation software:
WinISD
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QSpeakers
SpeakerSim
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SpeakerbenchSimilar woofers to Scan-Speak 18W/8545-01
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VOLT BM165.18 Ω
6.5″Mid Bass
fS
30 Hz
SD
154 cm²
50 - 3000 Hz
QTS
0.24
xmax
6.3 mm
SPL1W
87 dB
Bl/√RE
4.18
Pmax
200 W
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7″Coaxial
fS
30 Hz
SD
126 cm²
30 - 25000 Hz
QTS
0.24
xmax
3.0 mm
SPL1W
89 dB
Bl/√RE
3.13
Pmax
300 W
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