Fostex FE88-Sol
Full-range
3.4″ / 85 mm
Nominal diameter
100 Hz
Resonance
0.45
Q factor
89 dB
Sensitivity
± 1.1 mm
Linear excursion
15 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.1
dB
Frequency response
100 - 30000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
100
Hz
Mechanical quality factor
QMS
3.91
Electrical quality factor
QES
0.51
Total quality factor
QTS
0.45
Large signal parameters
Maximum linear excursion
xmax
1.1
mm
Air volume displaced at xmax
VD
4.1
cm³
Power handling
P
10
W
Program power
Pmax
15
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.0
Ω
Inductance (1kHz)
LE
0.06
mH
VC Diameter
16
mm
Magnet
Force factor
Bl
4.47
N/A
Motor constant
Bl/√RE
1.69
N/√W
Weight
0.584
kg
Diaphragm
Effective diameter
69
mm
Effective area
SD
37
cm²
Moving mass
MMS
2.2
g
Moving mass (without air load)
MMD
2
g
Suspensions
Stiffness
KMS
0.96
N/mm
Compliance
CMS
1040
µm/N
Equivalent volume to the compliance
VAS
2
L
Mechanical resistance
RMS
0.35
N·s/m
Dimensions
Nominal diameter
3.4
″
85
mm
Overall diameter
112
mm
Baffle cutout diameter
90
mm
Overall depth
57
mm
Volume occupied by the driver (estimated)
0.26
L
Net weight
1.145
kg
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Export this driver to a simulation software:
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QSpeakers
SpeakerSim
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SpeakerbenchSimilar speaker drivers to Fostex FE88-Sol
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4″Full-range
fS
111 Hz
SD
54 cm²
110 - 18000 Hz
QTS
0.37
xmax
2.2 mm
SPL1W
89 dB
Bl/√RE
2.44
Pmax
80 W
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4″Full-range
fS
110 Hz
SD
51 cm²
100 - 20000 Hz
QTS
0.47
xmax
2.8 mm
SPL1W
90 dB
Bl/√RE
2.58
Pmax
80 W
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4.5″Mid-range
fS
104 Hz
SD
54 cm²
180 - 3000 Hz
QTS
0.41
xmax
2.0 mm
SPL1W
90 dB
Bl/√RE
2.16