In Reply to: Re: Grounding issues posted by Tarbaby on January 5, 2007 at 07:25:59:
A turntable is a special case, the signal is not necessarily grounded to anything on the turntable, and chassis or signal grounding the tonearm tube and/or plinth base (or the top metal plate) is often helpful in intercepting hum.It might help to think of it this way: on a turntable, you are extending the system ground out TO the 'table, in order to provide shielding for the cartridge signal. A turntable is seldom a true SOURCE of a ground, so the old rule-of-thumb about using the source as the ground reference does not hold true.
Jon Risch
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Follow Ups
- Re: Grounding issues - Jon Risch 08:53:13 01/06/07 (0)