Fostex FF165WK
Full-range
6.3″ / 160 mm
Nominal diameter
50 Hz
Resonance
0.34
Q factor
92 dB
Sensitivity
± 1.85 mm
Linear excursion
90 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
92.3
dB
Frequency response
50 - 21000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.0
Hz
Mechanical quality factor
QMS
4.19
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
1.85
mm
Air volume displaced at xmax
VD
24
cm³
Power handling
P
30
W
Program power
Pmax
90
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.5
Ω
Inductance (1kHz)
LE
0.06
mH
VC Diameter
35
mm
Magnet
Force factor
Bl
7.23
N/A
Motor constant
Bl/√RE
2.83
N/√W
Weight
0.848
kg
Diaphragm
Effective diameter
130
mm
Effective area
SD
132
cm²
Moving mass
MMS
9.5
g
Moving mass (without air load)
MMD
8.4
g
Suspensions
Stiffness
KMS
0.94
N/mm
Compliance
CMS
1068
µm/N
Equivalent volume to the compliance
VAS
27.8
L
Mechanical resistance
RMS
0.71
N·s/m
Dimensions
Nominal diameter
6.3
″
160
mm
Overall diameter
166
mm
Baffle cutout diameter
146
mm
Overall depth
77
mm
Volume occupied by the driver (estimated)
0.58
L
Net weight
1.95
kg
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SpeakerbenchSimilar speaker drivers to Fostex FF165WK
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8″Mid Bass
fS
53 Hz
SD
220 cm²
60 - 7000 Hz
QTS
0.31
xmax
6.0 mm
SPL1W
92 dB
Bl/√RE
5.09
Pmax
600 W
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6.5″Low frequency
fS
49 Hz
SD
154 cm²
70 - 7000 Hz
QTS
0.38
xmax
6.0 mm
SPL1W
90 dB
Bl/√RE
3.56
Pmax
300 W