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Sub37 Electrical Hum Issue

Posted: Wed Mar 15, 2017 6:50 pm
by jtmatchett
Screen Shot 2017-03-15 at 6.42.42 PM.png
Hum

Has anyone else had electric noise issues with the Audio Out on their Sub37? A few days ago I noticed a 60hz (and higher) hum coming from my Sub37. It is not a ground loop issue as all my other equipment is plugged into the same outlet with no issues. I've tried plugging directly into my Apollo interface as well as leaving it plugged in through my mic pre. Any ideas?

Re: Sub37 Electrical Hum Issue

Posted: Thu Mar 16, 2017 11:28 am
by bichuelo
Have you tried using the Sub 37 alone with headphones only?

Re: Sub37 Electrical Hum Issue

Posted: Thu Mar 16, 2017 11:40 am
by jtmatchett
Yes and no issue on headphone out. Called Sweetwater Tech Support and they said there is a known issue with Sub37 Audio Out and they have had good results switching from a TS cable to a TRS cable. Super odd, given it's an unbalanced out but I'll give it a shot.

Re: Sub37 Electrical Hum Issue

Posted: Thu Mar 16, 2017 12:09 pm
by bichuelo
Yes that has worked for me on some Moogs

This is something that seems to happen only to gear with analog oscillators

Check out this thread: https://forum.moogmusic.com/viewtopic.p ... ape+ground

That might be able to fix it

Re: Sub37 Electrical Hum Issue

Posted: Thu Mar 16, 2017 2:39 pm
by jtmatchett
This issue was resolved by switching to a TRS - TRS cable. Thanks for the help!

Re: Sub37 Electrical Hum Issue

Posted: Sat Mar 25, 2017 12:06 pm
by dirx808
I was having the same problem, low-level buzzing. I'm running the Sub into some MFs so the TRS trick didn't work for me. Fixed it with an Ebtech Hum X on the AC line. Super quiet now!

Re: Sub37 Electrical Hum Issue

Posted: Thu Sep 07, 2017 9:39 am
by Toom
I'm getting really bad hum, noise/static on my line out as well. Any other ideas how this can be helped/fixed? I've tried TRS cables and still nothing.

Re: Sub37 Electrical Hum Issue

Posted: Wed Sep 13, 2017 11:43 am
by SuiGen
I just had to change the line in of my audiointerface from Hi-Gain to Lo-Gain to fix it