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Loud hum with Direct out and Line out (to amp)
by skchoi2 on 2011-12-16 06:53:13

Hi, i've been really satisfied with all of the sounds and stuff on the x3 Live, but I recently ran into a problem. For the first time, i tried a direct out xlr to the PA and line out to an amp. As soon as I hooked up the instrument cable from the x3 to amp (the xlr was already hooked up), i got a LOUD hum/buzz through the PA and the amp. If I unplug the the xlr or the amp from the x3, then the humming stops immediately. I tried flipping the ground lift swich to no success. Is this a hardware fail? I guess it's not absolutely necessary to fix (I can just mic the amp, or do just direct outs), but it'd be nice to see if there was something i could do other than take it in for service, it's just not worth it to me anymore.

Thanks,

JR



Re: Loud hum with Direct out and Line out (to amp)
by Line6Don on 2011-12-20 17:27:46

What you are experiencing is known as a ground loop, which can be tricky to deal with. I would suggest you research more about ground loops, and see how that applies to your setup. I have included a link below that should explain the basics of ground loops as well as offer some things to try:

http://www.epanorama.net/documents/groundloop/">http://www.epanorama.net/documents/groundloop/">http://www.epanorama.net/documents/groundloop/



RE: Loud hum with Direct out and Line out (to amp)
by Line6Don on 2011-12-27 11:36:41

I have marked the answer that is correct for your question.

If you still have questions or are still experiencing an issue please start a new thread and mark the discussion as a question. To do so you can follow the link below and Ask a Question:

http://line6.com/support/community/support/

For more information about using the Online Technical Support System please review our FAQ at the link below:

http://line6.com/support/docs/DOC-1451

Thanks!




The information above may not be current, and you should direct questions to the current forum or review the manual.