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Old 28th March 2012, 08:36 PM   #4081
dvv is offline dvv  Serbia
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Quote:
Originally Posted by john curl View Post
Did you BREAK IN the BG's T?
Does "breaking in" a cap mean properly forming it?

As in letting it slowly charge at 5V, then discharging it with a resistor (and hopefully keeping all your finger skin in place), then the same but at 15V, and lastly the same at 30V?

Over the years, by trial and error, I found that this gives me two benefits:

1) It preps the capacitor for its place in a circuit, shortening the time of the whole circuit break in (after all, the biggies are not the only caps there), and

2) So formed caps definitely have a longer useful service life by approximately 20...30%, which is hardly negligible.

I have been at it for over 20 years now. I was taught the trick by an elderly RF engineer, then about to retire, but still willing to teach us newbies a good trick or two, or rather, proper engineering practice, old school.
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Old 28th March 2012, 08:39 PM   #4082
a.wayne is offline a.wayne  United States
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You cant just throw BG's in ... well so i was told , there is a systematic way of making them sing ...
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Old 28th March 2012, 08:51 PM   #4083
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I find this discussion of capacitor differences, disturbing.
First of all, we had 'generic' aluminum caps from the beginning of time, just about, and the only REAL improvements, for many years was with the Japanese. This culminated with Black Gate, that is a PATENTED real breakthrough in capacitor design and construction. The PROBLEM with these capacitors is that they were expensive, and HAD to be BROKEN-IN! The tech sheet said so. I met the inventor of the Black Gate capacitor, in Tokyo in 1986. He seemed an OK guy to me.
I personally tried to remove ANY electrolytic caps from critical audio circuits, so I was able to avoid them, for the most part, especially the Black Gates, because they were just too darn expensive to buy.
Now, for years, many people have been openly annoyed at the VERY IDEA that ANY electrolytic caps could sound different from each other, including the majority of people posting here. NOW, you European guys tell us that the European caps are distinctly better than the PREMIUM Japanese caps. How can this be, and what is the reason?
Is it just bias? Is it superior technology?
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Old 28th March 2012, 08:53 PM   #4084
dvv is offline dvv  Serbia
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Quote:
Originally Posted by a.wayne View Post
You cant just throw BG's in ... well so i was told , there is a systematic way of making them sing ...
You have to cuddle them? Discuss the circuit with them to see if they are willing to work in it?

By the time you complete all the song and dance, you will hear them play better even if they are in the cupboard.

Please ...
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Old 28th March 2012, 09:33 PM   #4085
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You haven't taught me anything about electrolytic caps, dvv. Please try harder.
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Old 28th March 2012, 09:34 PM   #4086
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Break-in for BG consists of running an AUDIO SIGNAL through the cap for many hours.
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Old 28th March 2012, 09:37 PM   #4087
tvrgeek is offline tvrgeek  United States
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OK, I see many brands of caps being bantered about, but as we know, each vendor makes many series of caps. They do tend to know what the heck they are doing. How about some recommendations of which series caps, from which vendors, for which applications?
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Old 28th March 2012, 09:39 PM   #4088
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Oh do they? Where is their DA spec?
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Old 28th March 2012, 09:42 PM   #4089
a.wayne is offline a.wayne  United States
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Yes BG,'s need to be cuddled , Install , change , install, change , use your ears, you cannot swap value for value ...Just saying ...





Any word on Kendeil caps .... ?
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Old 28th March 2012, 09:53 PM   #4090
tvrgeek is offline tvrgeek  United States
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Of course the other problem is you find the series you want from the OEM WEB site, and then can only get them in 50,000 lots with a 6 month lead. I wanted to buy just simple 10 turn trimmers, Out of 12 series in the catalog, only one was available in single quantity.
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