I have been having a constant hum in my system that I cant figure out and get rid of. Its in my side surround speaker when the tv is playing through it. And while trying to trouble shoot it i noticed a hum in my center channel when i run the xbox 360. How can I get rid of the hum? Will XLR balanced connectors solve the issue, running those from my amps to my Marantz SR8012? Any ideas or help will be appreciated. And if XLR cables are my answer can you point me into a good cable for my 7.2 system?