Fostex FW405N
Woofer
15″ / 400 mm
Nominal diameter
27 Hz
Resonance
0.45
Q factor
94 dB
Sensitivity
± 7.9 mm
Linear excursion
150 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.3
dB
Frequency response
27 - 2500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
27.0
Hz
Mechanical quality factor
QMS
6.76
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.45
Large signal parameters
Maximum linear excursion
xmax
7.9
mm
Air volume displaced at xmax
VD
703
cm³
Power handling
P
50
W
Program power
Pmax
150
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.9
Ω
Inductance (1kHz)
LE
0.64
mH
VC Diameter
80
mm
Magnet
Force factor
Bl
15.7
N/A
Motor constant
Bl/√RE
5.98
N/√W
Weight
2.29
kg
Material
Ferrite
Diaphragm
Effective diameter
337
mm
Effective area
SD
890
cm²
Moving mass
MMS
100.8
g
Moving mass (without air load)
MMD
82.3
g
Suspensions
Stiffness
KMS
2.91
N/mm
Compliance
CMS
344
µm/N
Equivalent volume to the compliance
VAS
393
L
Mechanical resistance
RMS
2.53
N·s/m
Dimensions
Nominal diameter
15
″
400
mm
Overall diameter
395
mm
Baffle cutout diameter
350
mm
Overall depth
180
mm
Volume occupied by the driver (estimated)
5.0
L
Net weight
10.0
kg
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SpeakerbenchSimilar subwoofers to Fostex FW405N
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15″Woofer
fS
23 Hz
SD
788 cm²
23 - 4000 Hz
QTS
0.43
xmax
5.0 mm
SPL1W
95 dB
Bl/√RE
5.08
Pmax
240 W
.jpg.webp)
15″Woofer
fS
23 Hz
SD
788 cm²
23 - 4000 Hz
QTS
0.43
xmax
5.0 mm
SPL1W
95 dB
Bl/√RE
5.08
Pmax
240 W