Bottlehead Forum
General Category => General Discussion => Topic started by: aragorn723 on December 22, 2014, 02:40:52 AM
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Hi,
Just got notification that my K75-10 russian capacitors will be here today! Can't wait to try the next upgrade in the Quickie as it has been quite a while. Is there a way to burn them in without using up battery power? Thanks,
Dave
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Dave,
You can put them across the speaker outputs of an amplifier and play some dynamic music on repeat for 3-4 days. Don't play too loud, don't have the speakers hooked up at the same time.
This puts higher voltage than you will see in the Quickie across them and gives 90% of break in.
I like these caps. I have bought several "lots" of them over the last 12 years.
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I don't think the K75's need a lot of break in. They're a little warm-sounding at first but tend to even out after a short while. Maybe 50 hours. Great caps!
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How big are the caps? A 2.2uF cap will have a reactance of around 8 Ohms at 10kHz, dropping to around 4 Ohms at 20kHz. This is probably just perfect to sit at the output of an amp, but breaking in a 22uF cap in this manner would be a rough load for most amps (An 8 Ohm resistor in series would fix that).
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The caps are 2.2 uf. Grainger, how would I do the burn-in? Plug a cd player direct into the amp, then have a cap across each set of amplifier outputs? Thanks,
Dave