8″ / 200 mm
Nominal diameter
73 Hz
Resonance
0.36
Q factor
94 dB
Sensitivity
± 6 mm
Linear excursion
400 W
Program Power
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Available on (affiliate link)
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.8
dB
Frequency response
60 - 4500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
73.0
Hz
Mechanical quality factor
QMS
2.56
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.36
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
138
cm³
Power handling
P
280
W
Program power
Pmax
400
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.6
Ω
Inductance (1kHz)
LE
0.34
mH
VC Diameter
51
mm
Magnet
Force factor
Bl
7.2
N/A
Motor constant
Bl/√RE
4.47
N/√W
Diaphragm
Effective diameter
171
mm
Effective area
SD
230
cm²
Moving mass
MMS
18
g
Moving mass (without air load)
MMD
15.5
g
Suspensions
Stiffness
KMS
3.79
N/mm
Compliance
CMS
264
µm/N
Equivalent volume to the compliance
VAS
18.4
L
Mechanical resistance
RMS
3.23
N·s/m
Dimensions
Nominal diameter
8
″
200
mm
Overall diameter
210
mm
Baffle cutout diameter
186
mm
Overall depth
99
mm
Flange thickness
14
mm
Mounting depth
85
mm
Volume occupied by the driver (estimated)
1.1
L
Net weight
3.4
kg
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Export this driver to a simulation software:
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SpeakerbenchSimilar woofers to Eighteen Sound 8MB500
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