Arny Krueger wrote:

"Serge Auckland" wrote in
message
Nick Gorham wrote:

http://members.aol.com/sbench102/caps.html

Interesting. I'll study it in the next day or two.

It's not what it seems. The testing procedures ignored the nonlinearity of
an audio transformer, and did not use the caps as they are typically used in
audio gear.

Very, very true. A ridiculous way to make such a test.

I can find *no* difference whatever between the various plastic film dielectrics
in a real world application whatever using Audio Precision test gear.

The business about ceramics is very old news and it seems he didn't test the
perfectly linear low-K types ( not available as 0.1 uF )

Furthermore, there's a very neat trick to avoiding any trouble with aluminium
electrlytics as coupling caps too ( as practiced by good pro-audio manufacturers
).

Graham