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Hi,
Does anyone have the schematic of Joe's upgrade RIAA phono? Also, the B+ voltage going into it?
Follow Ups:
Without having the time to sketch out the schematic for you - The changes are all in the four RIAA feedback components to the original PAS schematic. This circuit is a series connection of two paralleled pairs and they terminate at the cathode of the first gain stage tube - you should be able to work backwards from there and determine the four referenced components
The Curcio phono is nothing more than a modified PAS phono. Try the link below.
Ciao
http://www.curcioaudio.com/Dynaco%20PAS%20RIAA%20EQ%20Correction%20Mod.pdf
Thanks but I am not using the PC board. I built a point to point version of it and I would need to know on a schematic of where to make the changes.
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