quick question....are the mirrors used to decrease the projectors throw distance? other than being used for different mounting setups.

The mirrors don’t decrease the throw distance. They allow you to decrease the size of your display by allowing you to split the throw distance between the projector a mirror and the surface. The distance from the projector to the mirror to the surface has to be the same throw distance as would be required from the projector to the wall if you pointed the projector directly at the wall.

For example if the throw distance of the projector is normally 5 feet you can point the projector at a mirror 2.5 feet away and have the image reflect another 2.5 feet back to the display surface for a total of 5 feet.

Or so I am told.

Thanks for your explaination , That really was what I meant, just didn’t word it right about the throw distance. You simply can have the projector closer to the screen than the specs. allow for .