Fostex FW137 User Manual
Fw137, Specifications & thiele/small parameters, Low flux leakage woofer
Features
Frequency Response / Impedance
Dimensions & Mounting Information
Overall Diameter :
Baffle Hole Diameter
:
Depth
:
mm /
in
mm /
in
mm /
in
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
(main)
:
(cancel)
:
Net Weight
mm /
in
mm /
in
Ω
kHz
dB/W(m)
W
W
g /
lb
g /
lb
g /
lb
a :
Sd :
Zn :
Fs :
Re :
Le :
Qms :
Qes :
Qts :
Mms :
BL :
Vas :
Xmax :
Eff/
η0 :
Cms :
EBP :
mm
m
2
Ω
Hz
Ω
mH
g
Telsa/m
L
mm
%
mm/N
FW137
Low Flux Leakage Woofer
130
5
30.4
1.2
Cast
8
8
87
25
75
Ferrite
226
0.498
152
0.335
1,495
3.296
155
6.1
122
4.8
86.8
3.4
• Kenaf-Cellgaia hybrid cone
• Reasonable Qts value for easy
bass-reflex enclosure design
• Newly designed aluminum die-
cast frame
• Ferrite magnet & repulsion type
magnet shielded circuit
55
0.0095
8
55
7.4
0.067
3.58
0.57
0.5
11.7
7.06
10.202
1
0.24
0.0008
96.491
ш155
ш91.5
ш121
ш150
(77)
(86.8)
9.8
(8)
5-ш4.2 hole
20
50
100
200
500
1k
2k
5k
10k
20k
50
60
70
80
90
100
110
(dB)
Hz
Ω
64
32
16
8
4
Impedance
60
0
30
0