In Reply to: RE: You sure about "most"? posted by John Elison on August 20, 2020 at 14:15:35:
80-90% would be my guess as well. I've owned many amplifiers and repaired many others through the years. Almost all of them have a common ground on the black terminal.
Nowadays, a number of multi-channel amplifiers will have "zone" modules configured to a single power supply. It's not unusual to see a 10 ohm (or so) resistor from each module to a common/chassis ground. But even in that case, it's the red terminal that is actively driven and not the black.
Dave.
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Follow Ups
- RE: You sure about "most"? - Davey 15:35:26 08/20/20 (20)
- RE: You sure about "most"? - Tre' 08:26:56 08/21/20 (19)
- RE: You sure about "most"? - rivervalley817 09:44:20 08/21/20 (12)
- RE: You sure about "most"? - Davey 10:46:28 08/21/20 (11)
- RE: You sure about "most"? - rivervalley817 11:45:24 08/21/20 (8)
- RE: You sure about "most"? - Davey 16:53:11 08/21/20 (5)
- RE: You sure about "most"? - rivervalley817 18:43:24 08/21/20 (4)
- RE: You sure about "most"? - Davey 19:44:41 08/21/20 (3)
- RE: You sure about "most"? - rivervalley817 20:09:27 08/21/20 (2)
- RE: You sure about "most"? - Davey 21:26:13 08/21/20 (1)
- RE: You sure about "most"? - rivervalley817 21:33:14 08/21/20 (0)
- RE: You sure about "most"? - Tre' 14:11:24 08/21/20 (1)
- RE: You sure about "most"? - rivervalley817 15:13:07 08/21/20 (0)
- RE: You sure about "most"? - Tre' 11:13:16 08/21/20 (1)
- RE: You sure about "most"? - Davey 11:37:15 08/21/20 (0)
- RE: You sure about "most"? - Davey 09:11:33 08/21/20 (5)
- RE: You sure about "most"? - Tre' 11:08:53 08/21/20 (4)
- RE: You sure about "most"? - John Elison 11:33:34 08/21/20 (3)
- RE: You sure about "most"? - Tre' 13:16:31 08/21/20 (2)
- RE: You sure about "most"? - John Elison 14:05:10 08/21/20 (1)
- RE: You sure about "most"? - Tre' 09:39:24 08/22/20 (0)