Russian coupling cap preference .....

Posted by vinnie2 (A) on October 15, 2014 at 05:38:32

I know this is very subjective, that is why I said preference. Quite a few years ago I bought a bunch of different types of Russian caps; k40-y9, K42-y2, ccr, k6f, m6f, k72 and t-3 (the letter names are what they look like to me).
I got quite a few different values for most of them except the t-3, that one is only 0.1uf at 1000v.
One of the last things I do with any piece of gear I build is have a cap rolling session for any coupling caps in the unit.
I am in the process of doing that now with the bread boarded low voltage 845.
I have tried them all at least once, and so far my favorite is a 0.1uf k40-y9, although I have to admit the k72 is pretty darn good too. I was surprised that I did not like the T-3 more than I did given all the praise it seems to have found on the net, but it sounded kind of dry to me.
I have used multiples in parallel with some of them to try larger values, but I am also finding that I prefer the lower values for a cleaner sound. With the k40 I started at 0.22uf and worked down to 0.01 then back up to 0.1 where it sounded best. It was pretty easy to hear the spot where it seemed to have the best all around sound by playing 3 or 4 different types of music at each point and listening carefully. It takes a little time, but definitely worth the trouble.
Basically I am wondering who else may have done this and what your preferences are?

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Topic - Russian coupling cap preference ..... - vinnie2 05:38:32 10/15/14 (26)

RE: Russian coupling cap preference ..... - johnsonad 18:22:19 10/16/14 (3)

RE: Russian coupling cap preference ..... - drlowmu 09:26:26 10/17/14 (0)

RE: Russian coupling cap preference ..... - amnesiac 03:13:31 10/17/14 (1)

RE: Russian coupling cap preference ..... - drlowmu 09:21:23 10/17/14 (0)

RE: Russian coupling cap preference ..... - vinnie2 13:26:32 10/15/14 (6)

now the ssg sounds better! - vinnie2 17:37:30 10/15/14 (5)

RE: now the ssg sounds better! - drlowmu 09:55:26 10/17/14 (1)

RE: now the ssg sounds better! - vinnie2 10:30:34 10/17/14 (0)

Try the K75-10 - Jon L 16:06:44 10/16/14 (2)

RE: Try the K75-10 - vinnie2 17:05:13 10/16/14 (1)

RE: Try the K75-10 - drlowmu 09:52:15 10/17/14 (0)

RE: Russian coupling cap preference ..... - sony6060 12:10:39 10/15/14 (0)

Another vote for the SSG silver and mica - twystd 11:04:37 10/15/14 (0)

RE: Russian coupling cap preference ..... - Lew 07:00:28 10/15/14 (8)

RE: Russian coupling cap preference ..... - vinnie2 09:08:45 10/15/14 (0)

"Russian silver mica caps, SSG" +1 (nt) - Tre' 08:15:27 10/15/14 (6)

RE: "Russian silver mica caps, SSG" +1 (nt) - vinnie2 09:07:32 10/15/14 (5)

You have an 0.5uF SSG? - Lew 11:01:18 10/15/14 (3)

RE: You have an 0.5uF SSG? - vinnie2 13:15:53 10/15/14 (0)

I was going to ask the same. - Tre' 12:28:23 10/15/14 (1)

RE: I was going to ask the same. - vinnie2 13:14:38 10/15/14 (0)

Yes (nt) - Tre' 10:28:20 10/15/14 (0)

FT-3 take an Extremely long time to break in... even the 200 volt ones* - Cleantimestream 06:39:38 10/15/14 (3)

RE: FT-3 take an Extremely long time to break in... even the 200 volt ones* - vinnie2 09:09:50 10/15/14 (2)

200 hours or more - Mossback 11:01:05 10/15/14 (1)

RE: 200 hours or more - vinnie2 13:19:57 10/15/14 (0)

Russian coupling cap preference .....

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