Film Capacitor materials

[BrianL]

Cyril Bateman's massive series of articles about capacitors from Electronics World magazine can now be ordered on CD.

See his website for some downloads as well as ordering info:

http://uk.geocities.com/cyrilb2@btinternet.com/

[artquake]

Originally posted by rtate
I would like to know the "pecking" order for materials used in film capacitors for audio.
So generally speaking would polypropelyne be better than polyester? as well as metalized compared to non metalized?.
Where do foil and film/foil combinations fit in?
Are they better?
....

In generally speaking, ask you ask:
Why don't you try finding it out by listening ? Are those you want to order so expensive ? If yes, buy the cheapest ones to start and comparison in listening. The biggest improvement is done by beginning on lo-fi ... you'll have more fun in improvements ... AND you are sure that you can HEAR them ...
Ask a blind musician, in fact he/she will rather hear a difference ...
... maybe on oscilloscope there are differences, but I can't hear any in my set, or maybe I even specially like this very difference. Even very cheap parts have their privilege in circuits .

[Lumba Ogir]

jcx,
since dielectric is the decisive factor for audio quality (and other features), DA cannot be used as a general measure. It follows however that order of precedence within the family of film capacitors.

[jcx]

but what property of the dielectric?

[Lumba Ogir]

jcx,
clarification, I should have said:dielectric material (materials used for insulation are of primary importance).

I will try to answer your question, give me some time, please.