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Faint Buzz/Whine from USB-C Interface


MisterGreen

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I just got a new interface for my new build and I'm noticing a faint buzz or static coming out of my HS-50's (but strangely, not from my Event TR8's). It gets worse when I move my mouse around. Whether the interface is on or off, it's there. I've isolated it to the USB-C connection. When I unplug the cable, the noise goes away. I've tried 3 different USB-C connections on the computer and even one of the Type A connections with an adapter, with no luck. Also tried unplugging the display power and moving one of the HS-50's away from the computer. Has anyone ever experienced this?

Also, you don't hear it through the headphone outputs; only the speakers.

Edited by MisterGreen
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4 minutes ago, OutrageProductions said:

You've got electromagnetic field issues which are common in consumer grade audio electronics. Make sure that power & audio/data  cables are not physically laid in parallel, move things around to minimize noise, and use a USB cable with a ferrite choke on it.

Regarding that, none of the cables have moved and this wasn't present with my old PC.

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Presumably the speakers are powered from the wall AC sockets (the headphones wouldn't be), so you may have a ground loop; this would only be audible in the things connected to the wall.

Is the new computer a laptop?  If so, unplug it's ac adapter and see if ti goes away.  if it does, you can get isolation devices for the ac adapter (1:1 transformers that go between it and the wall) that should fix this.

 

If it's a desktop then you don't have the option of unplugging it, but you could move it to the same outlet as the speakers as a test.   

Also, if the interfrace has it's own ac adapter, *that* could be the source of the groundloop.  

Edited by Amberwolf
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