VB70 Posted February 18, 2017 Share Posted February 18, 2017 Does anyone here have crazy absolute intolerable buzz when trying to connect Helix to switch channels on your tube amp. Part of me purchasing this unit was for that reason and and "Holy Crap Marie" it works but i cant use it!!!! Is there a fix? Quote Link to comment Share on other sites More sharing options...
PiFromBRC Posted February 18, 2017 Share Posted February 18, 2017 Is it a ground loop? If so, I can tell you that I run everything through a Furman power conditioner except for my amps (ran out of outlets on the Furman). The result was an intolerable ground loop off my right channel. I bought a Ebtech Hum Eliminator and it has solved the problem across the board. Highly recommended. Quote Link to comment Share on other sites More sharing options...
bassguy129 Posted February 18, 2017 Share Posted February 18, 2017 +1 to a hum eliminator. I had the exact same problem, and an isolation transformer fixed it. I picked up the Behringer version for something like $20, and it worked perfectly. Quote Link to comment Share on other sites More sharing options...
ricstudioc Posted February 19, 2017 Share Posted February 19, 2017 ...and another vote for the Ebtech (or equivalent, didn't know about the Behringer). I'm always tinkering around with new board builds, Ebtechs have been a godsend for stopping noise problems.... Quote Link to comment Share on other sites More sharing options...
jbuhajla Posted February 19, 2017 Share Posted February 19, 2017 Does anyone here have crazy absolute intolerable buzz when trying to connect Helix to switch channels on your tube amp. Part of me purchasing this unit was for that reason and and "Holy Crap Marie" it works but i cant use it!!!! Is there a fix? My Blues Deluxe Reissie does this. When I unplug the cable on the Helix that goes to the foot switch input of the amp, the buzzing goes away. I have not tried to troubleshoot it though since I don't play in that configuration. Quote Link to comment Share on other sites More sharing options...
MusicLaw Posted February 19, 2017 Share Posted February 19, 2017 Symptoms are that of an insidious Ground Loop (different gound potentials) amongst the devices. Quote Link to comment Share on other sites More sharing options...
spikey Posted February 20, 2017 Share Posted February 20, 2017 If you are going aux send out from Helix into your amp I highly recommend one of these. Quote Link to comment Share on other sites More sharing options...
HonestOpinion Posted February 22, 2017 Share Posted February 22, 2017 Just a reminder there is a ground switch on the Helix itself. Worth a try I suppose. Quote Link to comment Share on other sites More sharing options...
jbuhajla Posted February 22, 2017 Share Posted February 22, 2017 Keep in mind, the original post I believe is referencing the relay channel switching of the amp, and not the audio signal itself. I know for sure my Fender amp has the same issue when connecting the relay switching output to the channel foot switch input on the amp. As soon as I unplug the cable going to the amps channel switching input, the extreme buzz is gone. I'll hook it up this weekend and troubleshoot what the cause is Quote Link to comment Share on other sites More sharing options...
MusicLaw Posted February 22, 2017 Share Posted February 22, 2017 Floating internal grounds can also be a real headache to correct. Not unheard of (no pun intended) in some gear. This could be contributing to the relay switching issue if on the amp. Or, possibly on the Helix's side. Quote Link to comment Share on other sites More sharing options...
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