Need suggestion for the replacement capacitor

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I am thinking to replace the C1 25uF, 25V non polar capacitor on my power amp. A 25uF, 25V non polar is very hard to find. I wonder can I replace it with a polystyrene or polypropylene capacitor to improve the sound coming out from the power amp.

Thanks in advance.
 

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Hi,

25uF in that position is a silly value for a DC blocking capacitor.
Around 2.7uF will give a ~ 3Hz -3dB downpoint. Most film caps
are far higher voltage than 25V, minimum being 100V typical.

rgds, sreten.
 
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