Fountek FR88EX 3" build - Page 2 - diyAudio
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Old 1st July 2011, 10:35 PM   #11
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Quote:
Originally Posted by AdamThorne View Post
What did you make the frame of the grill out of? Oh wait, those are the grills in post 5... ok...
Thanks, I found some 1/8" panel board at Lowes to make the grills. I actually cut away a lot more if it than the round hole you see in the pictures. I forgot to take a picture before I added the grill cloth.
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Old 2nd July 2011, 01:07 AM   #12
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That walnut looks to have much nicer grain than mine. So, how do they sound. I have a pair of FRs ready for use.
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Old 2nd July 2011, 08:49 AM   #13
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Default very cool

absolutely love walnut....seriously jealous

I was considering going a similar route with a pair of TB W3-1285SG, but the low Q and 100Hz fs puts me off a little. I like this project alot!
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Old 2nd July 2011, 12:44 PM   #14
Bigun is online now Bigun  Canada
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Quote:
Originally Posted by tuxedocivic View Post
So, how do they sound.
They sound a lot better than such a small driver and box has any right to.
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Old 16th January 2013, 11:57 AM   #15
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Which crossover is used in this project? I build this project in a few days..
0,33mH 8,2uF 4,7uF ?
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Old 16th January 2013, 12:17 PM   #16
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It's a single driver, so no electrical XO. The values you refer to are presumably the bafflestep filter.
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Old 16th January 2013, 04:55 PM   #17
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Correct, no crossover used in this build.

FYI, I am still using these daily in my desktop system and still very happy with the results.
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Old 17th January 2013, 05:44 AM   #18
pajazo is offline pajazo  Finland
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I have a pair of fr88ex in 2,5l ported tuned to 70Hz. I have tested many options but found that they sound better with the notch. I'm using 15uF, .22mH, 4.7ohm which makes a bit narrower (more Q) notch than that posted above, but it's still centered at 2700Hz.

If you use them as desktop speakers, BSC is not absolutely necessary, but I have had best results with about 2dB BSC.
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Old 17th January 2013, 09:18 AM   #19
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Ok thanks, I will do measurements and I will show here..
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Old 10th February 2014, 01:14 AM   #20
DloKs is offline DloKs  United States
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Thanks for the great build thread - I think I've been inspired to attempt my first DIY speaker project!
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