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Hum from Subwoofers after Dev 200 power off
#1
I finally got my subs hooked up and like the sound. But when I turn the power off, both subs hum quietly. If I disconnect from the Dev, the humming stops. I also have connected them to the Yamaha receiver I us for AV and there is no hum. . .

I have replaced the cables and it makes no difference.

Any ideas?
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#2
+1 I have the same problem. Once the 200 powers off the hum goes away. Everything is on the same power block.


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• Devialet 400 + Magico Q1
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#3
"Ground Loop" https://en.wikipedia.org/wiki/Ground_loop_(electricity). This article is somewhat flawed but is good enough. You may have two units connected to different circuit breakers or something is connected to TV that uses a cable or the internet.

There are isolators that work well for this, if you can't fix the problem yourself.
Synology 713+ -> Aurender N10 -> D 200 -> Legacy Audio Focus SE speakers. ClearAudio Emotion TT. Synergistic Atmosphere Level 3 UEF Speaker and Galileo (USB) Interconnects and Synergistic PowerCell UEF S - Virginia U. S. A.
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