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coupling caps

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charnich74

Member
2019-11-07 12:45 am
Hi, I'm looking for grid coupling caps for my sherwood s-5000ii. I'm trying to find 0.1u, 600V. I see that antique electronic supply had orange drops rated at 85, in either polypropylene or polyester. Are either of those a a good option in this application? ( Advanced Search | Antique Electronic Supply )

Alternatively digikey has these cornell dubiliers film caps rated at 105C.
( 940C6P1K-F Cornell Dubilier - CDE | Mouser )

Cheers
 

rayma

Member
2011-04-29 8:37 pm
Avoid polyester types (they have audible distortion), but polypropylene is very good.
The 716P series has copper leads, and sounds better than their 715P series, which has steel leads.
The CDE caps having a 105C rating is not important for coupling use.
 
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Another viewpoint on coupling capacitors, which I attribute to DF96: if there's no voltage across it, what effect can it have? Makes sense to me.


However, just to appease the wrathful Goddess of Audio, I use the affordable and reliable (never heard of a failure of any kind, ever) and ordinary, type 716P. Also contains Lanolin (Flanders and Swann reference for the children in the audience.)


All good fortune,
Chris
 
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