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Old 22nd July 2015, 04:37 AM   #1
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Default Fountek Full-Range FR58EX and FR88EX

I recently purchased Fountek FR58EX and FR88EX full-range drivers. The packaging box of each model contains a pair. "Matched pair" is printed on the box. Does Fountek really put two matched drivers in a box? I will check the drivers to see how are they matched.

I will build enclosures for the drivers as well. But no solid plan yet.
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Old 22nd July 2015, 04:56 AM   #2
zman01 is offline zman01  Bangladesh
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Couple of threads on FR88EX builds:

MARTELLO enclosure for FR88EX

Fountek FR88-EX
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Old 22nd July 2015, 07:19 AM   #3
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I bought two set of fountek fe85 to make a computer and a TV speakers set.

The computer ones are adapted from the martello enclosure in a 2L (internal) and reach 80hz : tuned at 95hz(low level but I heard them )
The TV one are a iBIB (inverted bigger is better) enclosure in around 8L (internal) and this one reache 55hz ! tuned at 62 hz. Still lacking bass for action movies but really nice for the place it take (15*19.7*73.5 cm including feet).


According to the bass extension you're aiming, you should have a look to the Frugel Horn Lite or a iBIB (the two design look very similar).
Planet10 may have a fonken-type plan for this driver.
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Old 22nd July 2015, 09:13 AM   #4
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Quote:
Originally Posted by zman01 View Post
Couple of threads on FR88EX builds:

MARTELLO enclosure for FR88EX

Fountek FR88-EX
Thank you for the links. I initially want to do sealed and passive radiator boxes.
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Old 22nd July 2015, 09:25 AM   #5
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I used CLIO Pocket to measure impedance of the drivers (no run-in). TS parameters were derived using delta mass method (2 g). First figure shows free air and added mass impedance curves for FR58EX (red/green and orange/blue). Second figure shows free air and added mass impedance curves for FR88EX (red/green and orange/blue).
Attached Images
File Type: png FR58EX impedance.png (30.3 KB, 117 views)
File Type: png FR88EX impedance.png (30.4 KB, 118 views)
Attached Files
File Type: txt FR58EX 60-43 2g TS.txt (267 Bytes, 6 views)
File Type: txt FR58EX 64-88 2g TS.txt (267 Bytes, 3 views)
File Type: txt FR88EX 60-37 2g TS.txt (267 Bytes, 0 views)
File Type: txt FR88EX 60-44 2g TS.txt (266 Bytes, 0 views)
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Old 22nd July 2015, 11:12 PM   #6
sk971 is offline sk971  United Kingdom
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I have just completed my first one of a pair of Fr58ex desktop speakers in slightly under 1 litre Bass reflex boxes.
With a bit of equalising to compensate for baffle step and a boost a 64hz this sounds fantastic, smooth, detailed and for its size great bass and soundstage.

Unfortunately I damaged the second driver and am waiting for the replacement.
Hope you like them too.
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Old 22nd July 2015, 11:49 PM   #7
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Zman, do't forget these The Fountek Five for FR88ex

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