merry christmas everyone dedicated lines..????

Sounds to me like you're picking up RFI (radio frequency interference) which, in this case, is being broadcast through the air, not through your AC lines. So you need to make sure all your shielding issues are in order. And, are your AC A/V circuits dedicated or not? I don't understand why you are uncertain.

It's very important that you isolate the (ground of) your cable service from the rest of the house/system. You can build yourself a cheap $4 isolator by wiring two 300-to-75 ohm adaptors back-to-back. Solder the 300 ohm twinlead sides of each adaptor to each other and cover with electrical tape or shrink tubing. Insert this device in the system by connecting your cable TV service to one side, and using a short piece of cable, the system to the other side.

You can also buy one from Audio Advisor for $100.

http://www.audioadvisor.com/store/productdetail.asp?sku=TRIBGG1

Merry/Happy Chrismuccah!

take the easy way out--get rid of your wife ;)

it sounds to me like you don't have dedicated lines....electricians are helpful but sometimes take the shortcut and just don't do it. if you truly have dedicated lines that have twenty amp circuits with proper use of shielded wiring from your box then you should not have any noise from anything unless the lines are lying across others and that is a no no.....it's tough to check your lines back to circuit box, but they should be labeled dedicated lines in your box for tv and audio....electricans can be helpful but harmful and you give them your money.....be careful and fully explain what you want to electricans

thanks guys. the reason i am unsure is because i cannot personally assertain whether or not they are. the electricians did not label any of their work in the box, so, short of plugging something into every outlet in the house and tripping circuit breakers one by one and seeing what turns off when, i can not know. any suggestions on what step tp take next would be greatly appriciated.
p.s. chrismuccah :)

Start tripping breakers. We've all done it sometime or other :~))