Fostex W400A-HR

Woofer

15″ / 400 mm
Nominal diameter
25 Hz
Resonance
0.31
Q factor
93 dB
Sensitivity
± 5.5 mm
Linear excursion
200 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1w, 1m, infinite baffle)
SPL1W
92.8
dB
Frequency response
25 - 2500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
25.0
Hz
Mechanical quality factor
QMS
8.20
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.31

Large signal parameters

Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
451
cm³
Power handling
P
67
W
Program power
Pmax
200
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
2.64
mH
VC Diameter
100
mm

Magnet

Force factor
Bl
19.5
N/A
Motor constant
Bl/√RE
7.96
N/√W
Weight
3.1
kg
Material
Alnico

Diaphragm

Effective diameter
323
mm
Effective area
SD
820
cm²
Moving mass
MMS
130
g
Moving mass (without air load)
MMD
113.1
g

Suspensions

Stiffness
KMS
3.03
N/mm
Compliance
CMS
330
µm/N
Equivalent volume to the compliance
VAS
310
L
Mechanical resistance
RMS
2.49
N·s/m

Dimensions

Nominal diameter
15
400
mm
Overall diameter
395
mm
Baffle cutout diameter
357
mm
Overall depth
242
mm
Volume occupied by the driver (estimated)
9.8
L
Net weight
21.4
kg
Fostex W400A-HR SPL & Impedance
Fostex W400A-HR Dimensions

Export this driver to a simulation software:

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