I think you need to stop what you're doing.\n\nIf you're going to seek Tech advice from unknown people on the internet, a clear understanding of your system layout is needed.\n\nWe seem to be in agreement that you have too many electronics on one circuit. The only solution to that, is another circuit. Until that is available, I would only use as many subwoofers as you are able to without inducing a hum.\nYep that is it. When I unplugged one subwoofer the hum goes away. When i plug it back in the hum returns. \n\nI only have one outlet on that wall can I use a power condotioner or anything? \nSetup:\nTv\nPs4\nRouter\nModem\nAv\n2 subwoofer tramsmitters.