Originally Posted by akm3
The drop depends on how big an image you are projecting. The further from the wall the lower the line will be. What is nice is that the 'start' of the image doesn't vary with zoom, so it will always be at the same height, or the math would get really annoying really quickly. You have to know how far off the ceiling your mount puts the projector, plus the extra ~4.5" for the lens, from the bottom of the projector, PLUS the drop projecting (1-3") depending on distance to the wall. It's easier to mount the projector first, then mount the screen at the right height.
I'm thinking this is just what I'm going to do. I'll go ahead and get the image on the wall, mask where the screen is going, and then install that.
AVR: Denon 2112
Speakers: EMP Tek e55ti, Center- EMP Tek e56ci, Side Surrounds- EMP Tek e55wi, Rear Surrounds- KLH 911b, Sub- SVS PC12 Plus
TV: Panasonic 50VT25
Blu-Ray Player:Samsung BD-EM59C;
Playstation 4, Apple TV, Harmony Remote