Fostex W Series Specifications

Features

• 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.
• Newly developed zincky die-cast frame
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.
• UDR tangential surround & spider are
equipped to realize the less anti-resonance
and superior amplitude characteristic.
Specifications
&
Thiele/Small Parameters
Size :
Voice Coil Diameter
:
Cast / Stamped :
Impedance :
Reproduction Frequency Response
:fs -
Sound Pressure Level
:
Rated Input :
Music Power :
Magnet Material :
Magnet Weight : 3,100
Net Weight 21,400
a : 161.3
Sd : 0.082
Zn :
Fs :
Re :
Le : 2.64
Qms :
Qes : 0.32
Qts : 0.31
Mms :
BL : 19.5
Vas :
Xmax :
Eff/η0 :
Cms : 0.33
EBP : 78.1
Frequency Response / Impedance
110
395 mm / 15 in
100
90
100 mm / 3.9 in
80
Cast
70
8 Ω
60
2.5
kHz 50
40
94 dB/W(m)
30
67 W
20
200 W
Alnico
Dimensions & Mounting Information
g / 6.83 lb
g / 47.18 lb
mm
2
m
8 Ω
25 Hz
6 Ω
mH
8.2
130 g
Telsa/m
310 L
5.5 mm
1.4 %
mm/N
W400A-HR
dB
10 20 Hz 50 100 200
8-9.5 X 7
Overall Diameter :
Baffle Hole Diameter
Depth
W-series
500 1K 2K 5K 10K
ø395
ø194
ø350
mm /
395
: mm /
350
: 242 mm /
Ω
64
32
16
8
20K
in
15
in
13
9.5 in