Fostex FW168HS
Woofer
6.5″ / 160 mm
Nominal diameter
42 Hz
Resonance
0.34
Q factor
87 dB
Sensitivity
± 4 mm
Linear excursion
100 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.6
dB
Frequency response
42 - 10000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
42.0
Hz
Mechanical quality factor
QMS
13.80
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
53
cm³
Power handling
P
35
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.9
Ω
Inductance (1kHz)
LE
0.47
mH
VC Diameter
50
mm
Magnet
Force factor
Bl
10.56
N/A
Motor constant
Bl/√RE
4.35
N/√W
Weight
1.09
kg
Material
Ferrite
Diaphragm
Effective diameter
130
mm
Effective area
SD
133
cm²
Moving mass
MMS
25
g
Moving mass (without air load)
MMD
23.8
g
Suspensions
Stiffness
KMS
1.67
N/mm
Compliance
CMS
600
µm/N
Equivalent volume to the compliance
VAS
14.3
L
Mechanical resistance
RMS
0.48
N·s/m
Dimensions
Nominal diameter
6.5
″
160
mm
Overall diameter
190
mm
Baffle cutout diameter
151
mm
Overall depth
100
mm
Volume occupied by the driver (estimated)
1.2
L
Net weight
3.87
kg
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SpeakerbenchSimilar woofers to Fostex FW168HS
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6.5″Woofer
fS
39 Hz
SD
127 cm²
39 - 3000 Hz
QTS
0.30
xmax
4.0 mm
SPL1W
87 dB
Bl/√RE
3.85
Pmax
120 W
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6.5″Woofer
fS
40 Hz
SD
104 cm²
20 - 4000 Hz
QTS
0.32
xmax
7.0 mm
SPL1W
87 dB
Bl/√RE
3.12
Pmax
300 W
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