swop electrolytic's for solid

[goodsguys]

Hi and thanks for reading this post.

Do you think it would be a good idea to replace the usual aluminium electrolytic capacitors on an amp board for the better specs of a solid state (polymer) type capacitor.

I have 4 aluminium electrolytic's around the dac chip (47uf 35v) and 4x 10uf 63v output coupling caps in the analog section, so 8 caps to replace in all, do you think a like for like replacement of the stock aluminium electrolytics for solid state polymer type caps would be okay in this situation.

I have done a google search and people have performed this on pc motherboards but there is not much on amps.

Many thanks in advance. John.

[jcx]

solid polymer electrolyte caps excell at low esr, esl - where those properties are important they can be technical "improvements"


last I looked they were only made for lower WVdc, no bi-polar versions

if you read Bateman's articles the latter properties point to their being poor choices for "signal path" coupling/DC blocking - if you believe nonlinear distortion has anything to do with "audio quality" in capacitors

[gootee]

Why not try polypropylene types?

[Speedskater]

I don't think that polypropylene's will fit.

[gootee]

Originally Posted by Speedskater

I don't think that polypropylene's will fit.

Oh, right. This is an existing unit. The PP caps would probably be larger than the size of a D-cell battery, for 47 uF. Never mind.