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Audio Research VT200 Biasing Schematic ETC.

Since Audio Research Corp. will not provide a PCB schematic for the biasing of my VT200 behemoth I would request anyone with a circuit board scan and/or schematic to come forward. I hesitate to do this with merely their 2 page biasing instructions as I also know any tech, even at ARC, would rely on a detailed image of the printed circuit board, component values, test points and detailed procedure.

Thanks,
John
dischief

Showing 1 response by jea48

jea48
4,765 posts
 
Dischief,

Not sure about the VT200 but the biasing of a VT100 mark 1&2 can be a bear if changing the small signal tubes along with the power tubes.If done improperly the new tubes and or the amp could be damaged.

My understanding changing the power tubes only is some what simple....

You might want to give ARC a call and find out if the VT200 bias like the VT100 mark 1&2.

http://mycollins.net/audio/artube1.html
http://mycollins.net/audio/artube1.html
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