Fountek FR88EX 3" build - Page 2

malibujeff · 1st July 2011, 10:35 PM

Quote:

Originally Posted by AdamThorne

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.

tuxedocivic · 2nd July 2011, 01:07 AM

That walnut looks to have much nicer grain than mine. So, how do they sound. I have a pair of FRs ready for use.

mondogenerator · 2nd July 2011, 08:49 AM

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!

Bigun · 2nd July 2011, 12:44 PM

Quote:

Originally Posted by tuxedocivic

So, how do they sound.

They sound a lot better than such a small driver and box has any right to.

dolphin123 · 16th January 2013, 11:57 AM

Which crossover is used in this project? I build this project in a few days..

0,33mH 8,2uF 4,7uF ?

Scottmoose · 16th January 2013, 12:17 PM

It's a single driver, so no electrical XO. The values you refer to are presumably the bafflestep filter.

malibujeff · 16th January 2013, 04:55 PM

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.

pajazo · 17th January 2013, 05:44 AM

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.

dolphin123 · 17th January 2013, 09:18 AM

Ok thanks, I will do measurements and I will show here..

2nd July 2011, 08:49 AM	#13
mondogenerator diyAudio Member Join Date: Sep 2009 Location: City Of Villans Blog Entries: 1	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! __________________ It still amazes me every time I get something right

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2nd July 2011, 01:07 AM	#12
tuxedocivic diyAudio Member Join Date: Jan 2011 Location: Ladysmith, BC	That walnut looks to have much nicer grain than mine. So, how do they sound. I have a pair of FRs ready for use.

16th January 2013, 11:57 AM	#15
dolphin123 diyAudio Member Join Date: Aug 2010	Which crossover is used in this project? I build this project in a few days.. 0,33mH 8,2uF 4,7uF ?

16th January 2013, 12:17 PM	#16
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	It's a single driver, so no electrical XO. The values you refer to are presumably the bafflestep filter.

16th January 2013, 04:55 PM	#17
malibujeff diyAudio Member Join Date: Mar 2010 Location: Georgia	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.

17th January 2013, 05:44 AM	#18
pajazo diyAudio Member Join Date: Sep 2004 Location: Helsinki/Finland	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.

17th January 2013, 09:18 AM	#19
dolphin123 diyAudio Member Join Date: Aug 2010	Ok thanks, I will do measurements and I will show here..