8″ / 203 mm
Nominal diameter
34 Hz
Resonance
0.34
Q factor
88 dB
Sensitivity
± 5.5 mm
Linear excursion
200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.3
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
34.0
Hz
Mechanical quality factor
QMS
7.78
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
115
cm³
Power handling
P
130
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.7
mH
VC Diameter
50
mm
Winding height
HVC
18
mm
Magnet
Force factor
Bl
8.8
N/A
Motor constant
Bl/√RE
4.92
N/√W
Air gap height
HAG
7
mm
Weight
1.36
kg
Diaphragm
Effective diameter
163
mm
Effective area
SD
209
cm²
Moving mass
MMS
35.6
g
Moving mass (without air load)
MMD
33.4
g
Suspensions
Stiffness
KMS
1.59
N/mm
Compliance
CMS
630
µm/N
Equivalent volume to the compliance
VAS
41.6
L
Mechanical resistance
RMS
2.37
N·s/m
Dimensions
Nominal diameter
8
″
203
mm
Volume occupied by the driver (estimated)
1.4
L
Net weight
3.2
kg
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Export this driver to a simulation software:
WinISD
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Hornresp
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SpeakerSim
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SpeakerbenchSimilar woofers to Audes 75W87-4
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8″Woofer
fS
35 Hz
SD
211 cm²
35 - 7000 Hz
QTS
0.33
xmax
5.5 mm
SPL1W
88 dB
Bl/√RE
4.36
Pmax
160 W
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