Should (as common sense dictates) amplifier "chassis ground" be wired to the electrical (3-prong outlet ground wire) ground or should be left to float?Consider the fact that depending on the source its "signal ground" may or may not be isolated from the AC mains.
Most "common" CD changers use a "floating ground" design with a switching power supply, while there seems to be less of an issue with more "high-end" CD changers.
I got a Marantz CC4300, which is my main signal source and supposedly it uses a traditional transformer power supply.
I measured the voltage between signal ground on it and the AC (wall socket ground) and there is about 12-15 volts AC. Which seems to tell me isolation is pretty good.
A common DVD player, however, measures about 50-60 volt AC potential between its signal ground (floating) and AC ground.
Could there be issues with ground loops when trying to connect various CD changers to an amplifier, which signal ground ultimately "meets" chassis ground and that goes to AC line ground?
I appreciate any experience anyone may have in this area.
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Topic - Chassis ground vs. source signal ground? - A.A. 18:54:27 04/25/07 (28)
- Re: Chassis ground vs. source signal ground? - arend-jan 04:04:53 04/28/07 (0)
- Ground is the wrong term today. - Ron Oehlert 14:32:44 04/26/07 (23)
- Oh yeah? - Triode_Kingdom 21:16:56 04/26/07 (11)
- YES. This is AC grounding. - cheap-Jack 08:36:34 04/27/07 (10)
- My point was apparently missed - Ron Oehlert 09:28:52 04/27/07 (9)
- I guess I am missing your point too - Russ57 09:54:24 04/27/07 (8)
- Re: I guess I am missing your point too - Dave Cigna 17:03:43 04/27/07 (0)
- Re: I guess I am missing your point too - Ron Oehlert 12:51:24 04/27/07 (3)
- In what way is electrical ground different than earth ground? - Russ57 13:36:08 04/27/07 (2)
- Re: In what way is electrical ground different than earth ground? - Ron Oehlert 15:15:01 04/27/07 (1)
- DC amps still need AC grounding. - cheap-Jack 09:28:06 04/28/07 (0)
- Re: I guess I am missing your point too - danlaudionut 10:57:46 04/27/07 (2)
- I don't make the codes - Russ57 12:03:46 04/27/07 (1)
- Re: I don't make the codes - danlaudionut 15:21:22 04/27/07 (0)
- Part 2: Ground is the wrong term today. - Ron Oehlert 14:48:18 04/26/07 (10)
- Re: Part 2: Ground is the wrong term today. - danlaudionut 16:39:13 04/26/07 (9)
- Gotcha - Ron Oehlert 09:14:02 04/27/07 (3)
- Re: Gotcha - danlaudionut 10:11:40 04/27/07 (2)
- Gotcha Again - Ron Oehlert 19:32:07 04/27/07 (1)
- Re: Gotcha Again - danlaudionut 20:49:47 04/27/07 (0)
- "That is why anything with a metal case... - kurt s 08:54:15 04/27/07 (4)
- Re: "That is why anything with a metal case... - danlaudionut 10:21:29 04/27/07 (3)
- Dan... - Henry Pasternack 18:46:37 04/27/07 (2)
- Re: Dan... - danlaudionut 20:36:53 04/27/07 (1)
- Unfortunately, - kurt s 21:10:10 04/27/07 (0)
- Re: Chassis ground vs. source signal ground? - TimRFox 05:07:15 04/26/07 (0)
- Re: Chassis ground vs. source signal ground? - Rob Mercure 02:18:49 04/26/07 (0)
- Re: Chassis ground vs. source signal ground? - Triode_Kingdom 21:03:48 04/25/07 (0)