In Reply to: RE: Ground is ignored in a balanced system. posted by Cut-Throat on April 19, 2021 at 15:47:56:
Chassis and audio grounds must not be the same thing in a single-ended system.
You have to ground the chassis thru the power cord for safety reasons- that is where ground loops really start to show up.
If there is some isolation between the chassis and audio ground of the amp or preamp, then you won't get ground loops. A resistor might be all that's needed to sort this out. Older equipment of course solved this by not grounding the equipment at all.
Balanced connections in high end audio will not always be ground-loop free although they *should*. If AES48 is observed in the equipment there will be no ground loop problems even though all the chassis involved are grounded.
If you had to lift grounds to get rid of ground loops there is a design flaw with the grounding scheme of at least some of your equipment. BTW A GFCI won't give you much protection if the grounds have been lifted!
You should be able to just plug and play. But so much of high end audio is done by folks who don't have a full grasp of how stuff like this works. Grounding in particular is poorly understood.
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Follow Ups
- RE: With single-ended stuff - Ralph 10:01:18 04/20/21 (5)
- RE: With single-ended stuff - Cut-Throat 10:15:03 04/20/21 (4)
- RE: That's a new one on me! - Ralph 10:53:20 04/20/21 (3)
- RE: That's a new one on me! - Cut-Throat 13:42:36 04/20/21 (2)
- RE: Good work - Ralph 14:21:45 04/20/21 (1)
- RE: Good work - Cut-Throat 14:33:22 04/20/21 (0)