6.5″ / 180 mm
Nominal diameter
36 Hz
Resonance
0.35
Q factor
88 dB
Sensitivity
± 9 mm
Linear excursion
150 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.9
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
36.0
Hz
Mechanical quality factor
QMS
3.72
Electrical quality factor
QES
0.39
Total quality factor
QTS
0.35
Large signal parameters
Maximum linear excursion
xmax
9.0
mm
Maximum excursion before damage
xlim
16.0
mm
Air volume displaced at xmax
VD
139
cm³
Power handling
P
70
W
Program power
Pmax
150
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.37
mH
VC Diameter
42
mm
Winding height
HVC
8
mm
Magnet
Force factor
Bl
5.9
N/A
Motor constant
Bl/√RE
3.25
N/√W
Air gap height
HAG
20
mm
Material
Neodymium
Diaphragm
Effective diameter
140
mm
Effective area
SD
154
cm²
Moving mass
MMS
18.1
g
Moving mass (without air load)
MMD
16.7
g
Material
Black Anodized Aluminium
Suspensions
Stiffness
KMS
0.91
N/mm
Compliance
CMS
1100
µm/N
Equivalent volume to the compliance
VAS
36
L
Mechanical resistance
RMS
1.1
N·s/m
Dimensions
Nominal diameter
6.5
″
180
mm
Volume occupied by the driver (estimated)
0.69
L
Net weight
1.7
kg
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar woofers to Scan-Speak 18WU/4747T00
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8″Woofer
fS
34 Hz
SD
211 cm²
35 - 4000 Hz
QTS
0.31
xmax
5.5 mm
SPL1W
88 dB
Bl/√RE
4.11
Pmax
160 W
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6.5″Woofer
fS
36 Hz
SD
129 cm²
36 - 8000 Hz
QTS
0.41
xmax
4.3 mm
SPL1W
87 dB
Bl/√RE
2.46
Pmax
80 W