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Capacitor Questions Re-capping Dahlquist DQ-20s

I'd like to re-cap my Dahlquist DQ-20s, but I'm running into some problems finding replacements with the same values, especially among higher-end capacitors.

For instance, one of the specified caps in the crossover is "14.5 µF", but I've not found a single one of those online. There are plenty of 15µF capacitors though. Will that substitution work? I have the same questions about 3.0 vs 3.3 and 5.0 vs 4.7/5.6 which are way more common.

Finally, if anyone has done these specific speakers, would you mind sharing what you used and how you liked the results?

Thanks for reading!
joelv
zd542
5,339 posts
 
http://dahlquistspeakers.com/
justubes2
203 posts
 
You can parallel the closes values to make up 14.5uf =/- 10 % so you should be fine.

As for the smaller caps, tweeter caps? find some that are exact values, 3 3.3, 4.7, 5, 5.6uf are common values, do check out the different brands.
grannyring's avatar
grannyring
6,592 posts
 
15uf is fine and have them tested and sort for values closer to 14.5uf. Always better to bundle values coming close to 14.5 uf.
rodman99999
6,206 posts
 
15uF is less than plus 10% of 14.5uF and would sound more coherent than paralleling caps of different values. Jon Dahlquist's claim to fame was always time and phase coherent systems. It would be a shame to compromise that, by mixing the time constants of differing caps. I'll bet Percy could find caps, in his inventory, very close to 14.5uF(if not right on).
grannyring's avatar
grannyring
6,592 posts
 
Rodmann is right. Many do feel three 5uf caps would sound better however. Some pretty big dollar speakers use this method, but I have not compared.
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