amp pop question

[fig]

Ok, will do thanks. I may have a 22nF orange drop around I could put there. Probably the only high voltage cap I have in that range.
[/quote]

Brian, I have some 223,333,473 orange drops if you need 'em sir.

[danfrank]

The 5R4 rectifier while only having a 2amp heater draw, so in that sense comparable to 5Y3, it has as first filter cap allowance according to datasheet only 4uF max rating for first node filter cap, so that might be a problem if you substitute that in.

Wow! I never checked that. Makes sense though as the amp I saw them in was an old Altec 1570B which uses a 6uf oil cap.
Thanks for bringing it to my attention

[cooder]

The 5R4 rectifier while only having a 2amp heater draw, so in that sense comparable to 5Y3, it has as first filter cap allowance according to datasheet only 4uF max rating for first node filter cap, so that might be a problem if you substitute that in.

Wow! I never checked that. Makes sense though as the amp I saw them in was an old Altec 1570B which uses a 6uf oil cap.
Thanks for bringing it to my attention

I do think that rectifier was not really intended for audio use where a very clean DC line matters. Unfortunately...