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Old 8th February 2004, 09:53 PM   #1
GAK is offline GAK
diyAudio Member
Join Date: Apr 2001
Location: Greece
Default caps for RIAA network

What kind of caps are best for RIAA network?
I need caps for tube based circuits.This means that caps must be 400 to 630V.
let's boom chitty boom
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Old 8th February 2004, 10:48 PM   #2
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Location: Belgium

Usually metallised polystyrenes or silvered micas are used.

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Old 8th February 2004, 11:05 PM   #3
JonPike is offline JonPike  United States
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Join Date: Feb 2004
Location: Irvine
Polyproplyne is good too.. probably the the best easily available type, since it seems polystyrene is going extinct.

You want close tolerances, at least 5%, if not 2% or better. If you're a pervert for perfection, try to match left and right channel values to as good as you can with a cap meter. (i.e. buy several and use the close pair) This may improve image reproduction.

Digikey has some 2% polyprop caps, though they may not be up to the tube level voltage rating you're looking for. Probably they do in the 5% range. Mouser is another parts supplier that has tons of parts and probably a few suitable choices.

Happy hunting!
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