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/
η
0 :
Cms :
EBP :
mm
mm
m
2
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
