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Old 1st July 2011, 10:35 PM   #11
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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!
Balancing the things I must do, with the things I'd like to do...This is a skill (or a luxury) amongst many that I do not possess.
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Old 2nd July 2011, 12:44 PM   #14
Bigun is offline Bigun  Canada
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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.
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
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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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