Hi I have recently purchased a set of Logitech z506 surround sound 5.1 speakers to use with my onboard Realtek HD audio in my Dell Studio XPS 8100 1986nbc/Win 7 64x. I really like the setup and performance other than the fact I get static feedback at idle from mainly the center channel speaker and any ideas on cause or fix would be great. It is not really loud static but it is aggravating and I tried to seperate cables but it didn't help. Any replies or info?Thanks!