I have been racking my brains on this issue I have been having. Every time I try to take an audio out feed from my audio consol and plug it into our video recording system a hum emulates from the house PA. I have tried every possible solution I could think of to resolve this. I have tried ground lifts, hum eliminators, using the same power source as the pa, using a power source from a completely different panel, nothing stops the hum. It does not matter what output I use on the board either weather it's an aux, bus, sub out or record out there is a hum in the pa only when I try to feed the video system. The board is a mackie vlz24-4 and I am trying to feed a DVD recorder. What am I missing here? To get sound for our video recordings I currently am using a in ear receiver to feed the DVD recorder which is not the proper way but it works and no hum. Has anybody experienced this and if so how did you solve this?
Thanks in advanced