Fostex W Series - Manual
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Features
Frequency Response / Impedance
Dimensions & Mounting Information
Overall Diameter :
Baffle Hole Diameter
:
Depth
:
mm /
in
mm /
in
mm /
in
Specifications
&
Thiele/Small Parameters
a :
Sd :
Zn :
Fs :
Re :
Le :
Qms :
Qes :
Qts :
Mms :
BL :
Vas :
Xmax :
Eff/
η
0 :
Cms :
EBP :
mm
m
2
Ω
Hz
Ω
mH
g
Telsa/m
L
mm
%
mm/N
Size
:
Voice Coil Diameter
:
Cast / Stamped
:
Impedance
:
Reproduction Frequency Response
:fs -
Sound Pressure Level
:
Rated Input
:
Music Power
:
Magnet Material
:
Magnet Weight
:
Net Weight
mm /
in
mm /
in
Ω
kHz
dB/W(m)
W
W
g /
lb
g /
lb
W400A-HR
W-series
395
15
100
3.9
Cast
8
2.5
94
67
200
Alnico
3,100
6.83
21,400
47.18
395
15
350
13
242
9.5
• Hi-rigid and reduced inherent resonance HR
diaphragm is employed. By using the radial pa-
permaking technique and whizzy hybrid ma-
terials, HR diaphragm realizes low distortion,
high durability, large internal-loss and fast
propagation speed like a metal diaphragm. This
unique-shaped diaphragm offers smooth fre-
quency response and superior low frequency
reproduction that the conventional cone dia-
phragm has never achieved.
• N e w l y d e v e l o p e d z i n c k y d i e - c a s t f r a m e
based on the strength analysis by the fine-
element method.
• Stronger magnetic circuit using 3,100g alnico
magnet is equipped for higher input durability
and larger amplitude driving.
• Oval mounting hole can be adjusted between
ø370 - ø375mm. W400A-HR has the com-
patibility with not only FOSTEX old 15” drivers
but some famous woofers’ replacements.
• U D R t a n g e n t i a l s u r r o u n d & s p i d e r a r e
equipped to realize the less anti-resonance
and superior amplitude characteristic.
161.3
0.082
8
25
6
2.64
8.2
0.32
0.31
130
19.5
310
5.5
1.4
0.33
78.1
10
20
50
100
200
500
1K
2K
5K
10K
20K
110
100
90
80
70
60
50
40
30
20
Hz
dB
32
16
8
64
Ω
ø395
ø194
ø350
242
18
11
5
109
ø372.5
8-9.5 X 7
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