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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: You would still have a ground loop. posted by Pooge on July 4, 2007 at 17:27:16:
Difficult to say without more diagnosis. First I would disconnect the preamp cables from the power amps.
>>>>>>>>>>>>>>>
I believe in one of Steve's earlier posts he did disconnect the ics from the preamp and the two amps. No hum with the ics disconnected.
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I would be curious what the effect, result, would be if Steve left the ics connected to the preamp but unplug the preamp from the 120V power outlet. Also disconnect all input ics from the preamp.
This test would still have the two power amps signal ground tied together at the preamp jacks. Would there still be a hum?
Your thoughts, or Al's, or any one else's.......
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Follow Ups
- RE: You would still have a ground loop. - jea48 07:14:55 07/05/07 (3)
- We also know that Steve's setup with two AC circuits does not hum. - Al Sekela 15:59:03 07/05/07 (2)
- Agree... - jea48 06:05:22 07/06/07 (1)
- Good experiment. - Al Sekela 13:31:32 07/06/07 (0)
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