Fostex FW168HR
Woofer
6.5″ / 160 mm
Nominal diameter
45 Hz
Resonance
0.35
Q factor
87 dB
Sensitivity
± 2.65 mm
Linear excursion
100 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.3
dB
Frequency response
45 - 10000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
45.0
Hz
Mechanical quality factor
QMS
3.25
Electrical quality factor
QES
0.38
Total quality factor
QTS
0.35
Large signal parameters
Maximum linear excursion
xmax
2.65
mm
Air volume displaced at xmax
VD
29
cm³
Power handling
P
35
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.1
Ω
Inductance (1kHz)
LE
0.07
mH
VC Diameter
35
mm
Magnet
Force factor
Bl
8.98
N/A
Motor constant
Bl/√RE
3.37
N/√W
Weight
1.09
kg
Material
Ferrite
Diaphragm
Effective diameter
120
mm
Effective area
SD
110
cm²
Moving mass
MMS
15.7
g
Moving mass (without air load)
MMD
14.7
g
Suspensions
Stiffness
KMS
1.21
N/mm
Compliance
CMS
830
µm/N
Equivalent volume to the compliance
VAS
15.1
L
Mechanical resistance
RMS
1.37
N·s/m
Dimensions
Nominal diameter
6.5
″
160
mm
Overall diameter
190
mm
Baffle cutout diameter
151
mm
Overall depth
97
mm
Volume occupied by the driver (estimated)
1.1
L
Net weight
3.64
kg
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6″Woofer
fS
46 Hz
SD
85 cm²
47 - 4200 Hz
QTS
0.37
xmax
4.0 mm
SPL1W
87 dB
Bl/√RE
2.29
Pmax
80 W