I looked through the FAQ's and couldn't find anything relating to this. I am wondering if one can tilt front left and right speakers 90 degrees? The problem is that these speakers are 17+ inches high and so in the space I have alloted for them, it's going to be difficult to set them up in their normal vertical manner. It would be much easier to set them on their side (they are only about 8" wide). Will this interfere with the sound in a negative way? Thanks!