Fostex FE87E User manual

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 :
D :
Sd :
Zn :
Fs :
Re :
Le :
Qms :
Qes :
Qts :
Mms :
BL :
Vas :
Xmax :
Eff/η0 :
Cms :
EBP :
mm
mm
m2
Ω
Hz
Ω
mH
g
Telsa/m
L
mm
%
mm/N
FE87E
LOW LEAKAGE FLUX TYPE FULL RANGE
SPEAKER UNIT
83 3.3
70 2.8
45.6 1.8
80 3
16 0.6
Stamped
8
30
89
5
10
Ferrite
48.4 0.107
27.9 0.062
288 0.635
•‘ES cone’ paper made of ba-
nana plant’s fiber
•Newly designed center cap
•Repulsion type magnetically
shielded circuit
•Ferrite magnet
30
60
0.00283
8
140
7.7
n/a
3.77
1.20
0.92
1.4
2.81
1.03
0.40
0.22
0.00092
117
20 50 100 200 500 1k 2k 5k 10k 20k 40k
50
60
70
80
90
100
110
(dB)
Hz
Ω
16
8
4
Impedance
ø75
83
21.6
45.6
ø70
ø53.8
R43
4-4 X 6
ø77.4
3.8