just plug & play
trimpot is for Jfets operation
Thanks for your response.
Can you tell me how to make sure the trimmers are adjusted correctly? I assume I am supposed to measure some location on the board and check for a specific voltage?
I got the preamp 2nd hand so want to make sure everything is good.
just check +/20V points
re- set with pot if needed
but - if nobody didn't tweak them , they're probably fine
Thanks so much! Exactly what I needed.
The previous owner told me John Rutan of Audio Connection did the tube change couple of years ago. And perhaps he messed with the trimmers...
I want to make sure.
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