Page 1
Features
φ220
4-φ5
208
φ182
87.9
48 3.5
φ145
• ES cone and center cap are adapted.
This new diaphragm material has the
fine, supple and high density fiber, and
its characteristics successfully improve
the mid-high frequency reproduction.
• ø146mm strong ferrite magnet is em-
ployed.
• Well tuned Qts / Mms values for ease of
use in the back loaded horn enclosure.
Specications
&
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
1,067 2.352
n/a n/a
3,200 7.055
mm / in
200 7.9
35
Stamped
8
20
96
30
90
Ferrite
1.4
mm / in
Ω
kHz
dB/W(m)
W
W
g / lb
g / lb
g / lb
FULL RANGE SPEAKER UNIT
FE206En
Frequency Response / Impedance
Xmax :
Eff/η0 :
a :
D:
Sd :
Zn :
Fs :
Re :
Le :
Qms :
Qes :
Qts :
Mms :
BL :
Vas :
Cms :
EBP :
81
162
0.0206
45
6.8
0.0525
4.57
0.194
0.19
12.2
10.65
70.99
0.8
2.68
1.172
231.96
mm
mm
2
m
8
Ω
Hz
Ω
mH
g
Telsa/m
L
mm
%
m/N
Dimensions & Mounting Information
Overall Diameter :
Bafe Hole Diameter
:
Depth :
208 8.2
185 7.3
87.9 3.5
mm / in
mm / in
mm / in
Page 2
Recommended Back Loaded Horn Type Enclosure
FE206E
T90A
Capacitor 0.68 - 0.33 F
20 50 100 200 500
1000
2k 5k
10k
20k
50
60
70
80
90
100
110
(dB)
Hz
14
15
16
17
18
522
440
220
50
290
275
50
120
47
40
50
100 100 100 100 100 100 100
100
450
100
125
150
50
100 100 100
255
160
74
52
87
(111)
250
313
408
42
42
219
50
5
1
2
3
4
6
7
8
9
10
11
12
13
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
145
900
21
21
350
392
300
( 22 )
200
35
36
• This exam p l e shows a ‘ b a ck
loaded horn’ type enclosure for
FE206En.
• FE206En’s magnetic circuit with
ø146 m m large fe r r i te magnet
provides sharper resonance and
makes the unit suitable for a back
loaded horn type enclosure.
• 21mm thick plywood is used for
main section and side panels to
ensure a strong enclosure.
• Tw o w a y system using super
tweet e r T 90A i s also rec o m -
mended.
Page 3
Sound
Absorbents
Sound
Absorbents
Sands
Sands
180
180
300
264
400
75
786
240
276
ø185
ø80
600
200
750
unit : mm
180
180
392
392
858
900350 350
80
80
450
450
450
350
80
408
290
290
80
50
12
19
26
30
31
32
33
35
36
392
392
858
900350 350
80
80
450
450
450
350
80
408
290
290
80
50
1
2
3
4
5
6
7
8
9
10
11
13
14
15161718
20
21 2223
24
25
27
28
29
12
19
26
30
31
32
33
35
36
*Italic font means part number.
3005222001504-1004-50
440
290
275
255250
219
150
150
150
150
780780
74
40
350
350
100
50
160
219
313
100
220
80
145
145
1
18
28
10
21
24
23
25
3
17 16
15
14 13
7 5 8
6
20 22 29
4
27
9
2
11
• This example has sufficient internal volume. However, if you prefer ‘tighter’
sound reproduction, you can reduce airspace using sands or other ll material.
• FE206En is designed for use in a back load-
ed horn type enclosure and it is generally
unsuitable for bass reex because of its over
damping sound characteristics. However, it
is possible to use the FE206En in a bass re-
ex enclosure as shown.
• This example is a narrow and tall style bass
reex type enclosure. Internal volume of 45
• Placing thin sound absorbent material as shown enable reduction of peaks & dips
around 150 to 400Hz band width. However, it may reduce transient response. You
should adjust it to your taste.
• In order to avoid unwanted mid/high frequency dispersion of the horn, we recom-
mend damping the enclosure with ller and sound absorption material.
liters tuned to approximately 50Hz (Fb).
• Low frequency response from around 120Hz
is gently damped with a controlled peak at
50 - 60Hz.
Bass Reex Type Enclosure
Page 4
Distributor / Authorised Dealer
www.fostex.jp
In accordance with our policy of continuous development, we reserve the right to change specifica tions without notice.
Fostex Co. ,3-2- 35 Musa shino, Akishima,T okyo,J apa n 196-0 021
Tel :+81(0) 42-546-497 4 Fax:+8 1(0)42 -546-92 22
Printed in China 500134
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