GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Analog Playback
In the Thread: The last phonocorrector: “End of Life" Phonostage

Post Subject: Where is the Bolt?Posted by Romy the Cat on: 11/22/2011

N-set, it is difficult to say anything without seeing the circuit. I think that you did not exactly my version but made some modifications; I do not know/remember what they were. The major think that I see at your picture is that your main grounding point is too far from where I accustom to have it. In my view the main grounding point, the location where everything need to come together, including the negative from filament and contact o chasses is the spot where you phono cable enter the box. Right next to RCA jack you need to have a big bolt driven into chasses and to this bolt everything needs to go. When you do ground bypassing and trace the source of your hum then you need to bypass everything in the respect to this bolt. I do not insist that this is how it always needs to be done. I am not an experience equipment builder – you have much more experience and knowledge. But how I described I bolt all my 4 phonostages and I never had any problems with noise, I presume that something I did right.

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