I've just tried to put my Dali Concept Centre speaker on top of my Toshiba CRT set and im getting quite bad purple and blue colorization. The speaker says its shielded but yet it still does it. I've also tried an older Sony centre speaker(also says shielded) and it does the same. As soon as i take the speaker away the color goes away. Seems as though its the set? Any ideas? Currently the speaker is under the tv on a rack, definately not at ear level. It would be optimal on top of TV but im using my projector more than the TV atm. I dont wanna kill the TV though!