[sdiy] Non-polar cap poll

[Joe Kramer]

Dear Friends,
    I would second that first choice of polystyrene for audio, but my second
choice would be polypropylene, and third would be polyester.  The audible
difference is hard to define, but could be described as "open", "natural,"
"airy," or something along those lines.  But it depends on what you want.
I've put big old ceramic disks in a filter and it sounded gritty and peaky
and microphonic and beautiful.

Regards,
Joe Kramer

patchell wrote:

>     For audio signals, my first choice is polystyrene.  Second choice is
> Polyester (mylar).  I have done some measurements on these two type of
> capacitors, and there really is a big difference between them (as far as
> dialectric memory goes)...however, that being said, in listening tests,
> I can't tell the difference...go figure.
>
> Tim Ressel wrote:
>
> > Hey all,
> >
> > Query: what kind of capacitor do you prefer for use in
> > filters?  I'm starting my ladder filter and ladder
> > phasor and am wondering what to use.
> >
> > Thanks!
> >
> > --tim
> >
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> --
>  -Jim
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> * Visit:http://www.silcom.com/~patchell/
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