|
Tech Square Technical and speculative discussion of amps, cables and other topics. |
|
|
|
Tech Square Technical and speculative discussion of amps, cables and other topics. |
|
In Reply to: Polypropylene or polyester posted by ned664 on March 10, 2008 at 14:23:35:
Hi.
Technically, the E/H hysteresis curve of PET (polyester, or polyethylene
terephthalate) is very slightly less linear than PP, but is already much better than mica, & low voltage ceramic.
I've used PP in hi-pass filters in loudspeaker X-over networks & signal paths where space is available. But for large cap values up to 10uF & low DC voltages, & space is not available, I've used PET (aka Mylar) as coupling caps in my tube & SS amps, even for the crucial phonostage I/P & O/P coupling.
Sound pretty OK & PET is much cheaper than PP of the same large capacitance.
c-J
PS: FYI, paper in oil caps is most linear but really good ones cost a fortune.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- I use both PP & PET.. - cheap-Jack 11:58:48 03/17/08 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
