Rclere Posted March 27, 2016 Share Posted March 27, 2016 I am experiencing a loud audio hum when I am using my helix into two powered monitors. I went in to the output section and made sure that it was on "line" setting. I am plugging the melody side of the Chapman Stick into the guitar input and the Bass side into RCV 1 because the AUX impedance is not right. Any suggestions. thanks in advance Quote Link to comment Share on other sites More sharing options...
willjrock Posted March 27, 2016 Share Posted March 27, 2016 Not to sound dismissive but check EVERYTHING. You wouldnt believe that a drum machine sitting too close to your interface or a UPS too near your helix could cause hum or other noises similar, but it does, and im betting its something this simple. You havent given a bunch of info in your post, so im just thinking out loud here. :) Quote Link to comment Share on other sites More sharing options...
spikey Posted March 27, 2016 Share Posted March 27, 2016 A bad fluorescent ballast to a noisy brick on the desk, to a fridge in the kitchen, or a bad AC step-down transformer in the alley can cause noise, including poor or no grounding. Move it to the other side of the house if nothing else works, and see if the humm/noise changes. Quote Link to comment Share on other sites More sharing options...
Ka5par Posted March 27, 2016 Share Posted March 27, 2016 You could try the ground lift button on Helix if it makes things better. I'm also using the stick with Helix. For now I'm using the returns as inputs for both sides. Quote Link to comment Share on other sites More sharing options...
jpdennis Posted March 28, 2016 Share Posted March 28, 2016 Not sure if it addresses your issue or not ... I have had an audible hum (I agree with sound people that any audible hum is loud) for the past two shows with two different bands. Using the Helix ground lift last week went from bad to worse and this week no change. First show the fix was to run my power straight into the power conditioner the PA was plugged into (short run thank God). Today the fix was a Pyle PHE400 hum eliminator due to the inability to use the fix I used last week. Dennis Quote Link to comment Share on other sites More sharing options...
hideout Posted March 28, 2016 Share Posted March 28, 2016 Does it hum whether or not the instrument is plugged in? Are you using XLR cables or 1/4" phone plugs? If you're using the 1/4" plugs, are they shielded or are they unshielded speaker wire? Speaker wire will hum when used with powered speakers. Quote Link to comment Share on other sites More sharing options...
Gawwuf Posted March 28, 2016 Share Posted March 28, 2016 We should probably pin this topic as well, sooo many factors can lead to this I'll throw my latest one up here. My helix sounded great at home but every time went to band practice there was a horrible buzz, after swapping cables, guitars, speakers, turning off all equipment then back on.... turns out it was a Monster Power Strip that didn't have anything turned on in it, was hooked up to his home theater. Unplugged it and the buzz disappeared. So it doesn't have to be anything attached to the Helix or your sound equipment. Quote Link to comment Share on other sites More sharing options...
gkinder Posted March 28, 2016 Share Posted March 28, 2016 We should probably pin this topic as well, sooo many factors can lead to this I'll throw my latest one up here. My helix sounded great at home but every time went to band practice there was a horrible buzz, after swapping cables, guitars, speakers, turning off all equipment then back on.... turns out it was a Monster Power Strip that didn't have anything turned on in it, was hooked up to his home theater. Unplugged it and the buzz disappeared. So it doesn't have to be anything attached to the Helix or your sound equipment. Having the same kind of issue all of a sudden with XLR noise.....going to invest in a good Furmann Power Conditioner....buddy of mine has one and he gets zero noise no matter where his rig is plugged in....and his tube amp "hiss" is virtually gone as well....units are a little pricey but they do solve power/noise issues very well... Quote Link to comment Share on other sites More sharing options...
Rclere Posted March 28, 2016 Author Share Posted March 28, 2016 Dhaaaaaa! I also did not mention, that I am getting No sound from the instrument whatsoever! I was using the XLR just fine, and then this happened all of a sudden. I switched to using 1/4 and have no problem... I am sorry for not mentioning this before... (doofus attack) Quote Link to comment Share on other sites More sharing options...
Gawwuf Posted March 28, 2016 Share Posted March 28, 2016 When I was analyzing my band practice problem I forgot to mention, my bass player had a power conditioner, I plugged into that with no effect. Only when the Monster Strip was unplugged did it cease..... so weird. Quote Link to comment Share on other sites More sharing options...
Joepeggio Posted March 28, 2016 Share Posted March 28, 2016 When I was analyzing my band practice problem I forgot to mention, my bass player had a power conditioner, I plugged into that with no effect. Only when the Monster Strip was unplugged did it cease..... so weird. Go monster!!! Sounds defective ( no pun intended) :rolleyes: Quote Link to comment Share on other sites More sharing options...
Gawwuf Posted March 28, 2016 Share Posted March 28, 2016 Hehehe! Yeah, it was a noise reducing strip, we think it was pushing all such noise back through the rest of the basement circuitry to achieve its quietude. Solved now anywho! Quote Link to comment Share on other sites More sharing options...
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