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In Reply to: Audio note caps reliablity posted by Todduk on March 27, 2007 at 14:37:13:
It may not have been the voltage. I have found that the AN and Jensen PIO caps are very sensitive to the thermal environment. I have not had any problems with preamp applications, but if you use them in a tube power amp they HAVE to be away from any close proximity to tubes. They will begin to develop DC leakage and eventually fail.
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My experience as well.
Thanks for the info. I was a bit sceptical about the use of vegetable oil in caps. great for salads and frying but in capacitors? nah veggie oil is prone to oxidise and generally degrade. Happily I have found replacements for free in the form of Wima mylar capacitors from my junk box. These aren't as quite as sweet as the ANs but I like free!
All other coupling caps have been fine.
Same here. Cardas Caps better the AN Cu PIOs in my amp,YMMV. More affordable too!
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