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Old 06-21-2013, 10:48 AM   #7
Andy Hamm
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Join Date: May 2011
Location: Canada
Posts: 1,371

Gates do nothing but get rid of the noise when you aren't playing. There are a few things that can cause this (at home) that you can look at.

1. Your VGA Monitor and computer - shield them. The case should be metal and cover the entire PC, empty drive bays should have the little metal 'space holders' put back in place etc. This is easy to test, yurn the PC and monitor off and see if the noise is reduced.

2. Florecent lighting uses balasts which give off noise that can be picked up by your pickups. Even the CFL ones have them. Light dimmers also induce noise on an AC line, as do motors. Turn off all the lights and unplug the fridge or whatever might be the cause of the noise to test.

To fix AC problems, the best way is to put all of the noisy 110v stuff on one leg of the AC, and put your audio stuff on the other. A different circuit, meaning a different breaker, but on the same leg will make no difference. A large UPS that recreates the AC sinewave (like a Powerware 9 series) may be a quick fix as well.

Of course, there is also gain structure to consider as well, but I assume that you are having an environmental issue.
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