General HIFI > Amplification (Pre/Power)

Bypassing PSU caps

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ozcal:
Hi guys , my Supratek has a large 10000uf cap in the psu. I have read that bypassing this with a 2.2uf film cap may improve hf performance.
What are your thoughts on using bypass caps?
I have a 2.2uf Obligatto film cap I can use.
Gordon

tuyen:
Give it a go Gordon and let us know how it is.

I've tried some Jensen copper 0.01uf bypass caps on my 220uF Jensens in the powersupply for the dac.

Added more air and highs in the sound, but took away some body in the mids too.  It was exciting at first, but after I while I realised I preferred having more texture and body in the midrange so I removed them. :)

ozcal:
Ta T,.
Tried it this arvo , sound has more weight and solidity in the mids but the upper mid and treble is thinned and the bass is now boomy.
I don't think I like the Nichicon FG ST so I might try putting the original cap back in until I can afford a 10 000UF Jensen to compare.
Gordon

tuyen:
Try different values mate. 0.1uf  and 0.01uf :)

I can lend you some vintage 0.01uf  jensens next time  :)

stevenvalve:

--- Quote from: ozcal on October 29, 2010, 02:30:12 PM ---Hi guys , my Supratek has a large 10000uf cap in the psu. I have read that bypassing this with a 2.2uf film cap may improve hf performance.
What are your thoughts on using bypass caps?
I have a 2.2uf Obligatto film cap I can use.
Gordon

--- End quote ---
I have never liked bypass caps. In the old days when caps where slow and rolled off it was Ok. gives the sound a high frequency boost almost peaky. The best of todays caps don't need it.

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