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Electrolytic capacitor replacement

I want to swap out a couple of electrolytic caps with higher quality caps, also electrolytic. The ones I am looking at are all physically bigger than the ones I am replacing, and consequently the leads don’t fit the board. The rubicon’s I want to bin are have a diameter of around 3/4’ and the caps I’m considering are between 1’ and 2’. The big issue I have is the lead spacing.

I’m considering using a spacer between the pc board and the cap giving enough room for the leads to bend enough to fit the board. I have space on the board to fit a larger cap, but not enough to mount the caps on their side. The caps new will need to sit “upright”.

Id appreciate it if somebody has figured an eloquent solution for this.

Thanks
pauly
itsjustme
681 posts
 
I ought to have added, what i define as "superior" are the characteristics that affect sound quality, specifically both frequency and phase linearity. They are dissipation factor and dialectic absorption. Both are often on the datasheet. ’Lyics range from bad to worse. Films range from good to excellent, and are way more stable. But they are vastly less size efficient (small values in big packages) and so are only usefully applied in parallel to handle the frequencies that are most affected.
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mahlman
433 posts
 

On Klipsch Choprus speakers there is a little dinky 68uf electrolytic which does not last as long nor sound as good as an Audyn 68uf poly cap. Of course the size is 20 times larger at least.

  I take the old electrolytic off and reuse the holes in the PC board for the new cap leads. I have to mount it on top of the board pairs with hook and loop tape and then a cable tie over cap and tape for extra security. I have to extend the leads to reach the PC board holes with good tined buss wire which is then insulated with teflon sleeves and the bare joints where the buss wire is soldered to the cap lead wires is protected by heat shrink tubes.

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