Tube DIY Asylum

RE: 12AX7A contact-potential biasing

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Yes gents, this is what puzzled me and prompted my initial post - although what was going on in my mind was converting to true c-p biasing with multi-Meg grid-return and a small cap on input. I can understand that.

My application would involve use only with high impedance/high output vintage variable reluctance cartridges playing 78s & pre-Sixties vinyl.


Brian.



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