Hi all, I think the center channel for my home theater system isn't magnetically shielded. It's a KLH 943PL, and on the box it says it is - but I don't think it is. I'm getting wavy lines on my screen whenever the center channel is playing - if I disable it from my receiver than the lines start to fade after a couple of seconds. The center channel is sitting right on top of my monitor. Should I move it? I think it's in the optimal position... Should I get something to put between the speaker and the monitor? And it's not my refresh rate...it's 75Hz... Even my KLH 911B front speakers aren't shielded - I think - because I can notice the waviness even when the center speaker is off, slightly, and they go away when I turn the receiver down/off. Thanks in advance.