I have a question that I am sure one of you will be able to answer. Tomorrow I will be recieving my 57' Toshiba Widescreen HDTV and will be hooking it up to the rest of my Home Theater system. My question is this. If I put the subwoofer behind the TV unit and have a fairly loud volume with a movie will I get lines running down the picture from shaking? I ask this because I currently have a 32 inch TV on a stand next to my 2 big speakers with the sub woofer behind it, and when there is a BIG action scene in a movie and the volume is cranked I get horizontal lines running down the screen. I do not want this to happen with my new 57 inch hd tv. Do you think the sub will affect it like the 32, or where would be the best place for it? Any info on this would be much appreciated. Thanks in advance.