Fostex Speaker FW137 User Manual

Low Flux Leakage Woofer  
FW137  
Features  
• 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  
Specifications  
&
Thiele/Small Parameters  
Size  
:
130 mm /  
5 in  
Voice Coil Diameter  
:
30.4 mm / 1.2 in  
Cast  
Frequency Response / Impedance  
Cast / Stamped  
Impedance  
:
:
8
110  
100  
90  
Reproduction Frequency Response  
:fs - kHz  
Sound Pressure Level  
8
:
:
:
:
87 dB/W(m)  
25 W  
80  
Rated Input  
Music Power  
Magnet Material  
Magnet Weight  
(main)  
70  
64  
32  
16  
8
75 W  
600  
60  
Ferrite  
300  
20k  
Impedance  
50  
(dB)  
4
:
:
226  
152  
g / 0.498 lb  
g / 0.335 lb  
20 Hz  
50  
100  
200  
500  
1k  
2k  
5k  
10k  
(cancel)  
Net Weight  
1,495 g / 3.296 lb  
a :  
mm  
55  
Dimensions & Mounting Information  
Sd :  
Zn :  
m2  
0.0095  
5-ø4.2 hole  
8
55  
ø155  
Fs :  
Hz  
Re :  
7.4  
Le :  
mH  
0.067  
3.58  
0.57  
0.5  
Qms :  
Qes :  
Qts :  
ø91.5  
ø121  
Mms :  
BL :  
g
11.7  
7.06  
10.202  
1
ø150  
Telsa/m  
L
Vas :  
Xmax :  
Eff/η0 :  
Cms :  
EBP :  
mm  
%
0.24  
0.0008  
96.491  
mm/N  
Overall Diameter  
:
mm /  
in  
155  
6.1  
Baffle Hole Diameter  
:
mm /  
mm /  
in  
in  
122  
4.8  
3.4  
Depth  
:
86.8  
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