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290
290
50
408
450
450
219
Sound
160
Absorbents
Sands
Sands
Sound
220
100
Absorbents
• FE206En is designed for use in a back load-
ed horn type enclosure and it is generally
unsuitable for bass reflex because of its over
damping sound characteristics. However, it
is possible to use the FE206En in a bass re-
flex enclosure as shown.
• This example is a narrow and tall style bass
reflex type enclosure. Internal volume of 45
liters tuned to approximately 50Hz (Fb).
• Low frequency response from around 120Hz
is gently damped with a controlled peak at
350
50 - 60Hz.
350
80
450
• This example has sufficient internal volume. However, if you prefer 'tighter'
313
sound reproduction, you can reduce airspace using sands or other fill material.
• 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 filler and sound absorption material.
Bass Reflex Type Enclosure
350
50
100
219
160
220
100
350
180
180
unit : mm
240
276
313
350
50
100
unit : mm
ø80
75
264
300
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