Does Having the Turntable Grounded Through the Right RCA Effect Sound Quality?


I have a Thorens TD-160MKII (that I've posted about before). Does the way Thorens (and some other makers) ground through the right channel have a negative effect on sound quality? What's the advantage/disadvantage? And why do most makers seem to do it the other way with the connection going to a separate terminal on the preamp?

Thanks.

-Doug

dtgarf

Showing 1 response by dover

@dtgarf

With the old Thorens both the TT chassis AND the tonearm are often earthed to the same point - sometimes through the right channel, other times through a separate earth lead.

What I found when I separated the TT chassis earth from the arm earth and ran it to the AC outlet instead of the phono pre was a significant reduction in noise floor.

You should only run the arm ground to the phono pre.

You are better off to run a separate earth wire for the arm instead of using the right channel in my view - keep the signal cables as clean as possible.