Originally Posted by Shan
To get the full 2.8 gain, you need the projector lens as close to eye-level as possible because the screen is retro-reflective. That said, you will still get significant gain if the projector is ceiling mounted. When I used the HP in my theater I got about 1.7 gain with the projector ceiling mounted.
This info brings up something I have been struggling with... I am having a house built with a dedicated room for HT. I should be ready to buy around July....Right now, my plan is to get a VPL-HW50ES (unless Sony comes out with something newer) and a DALite HP 2.4 ...145" screen... the room will be 26x16x10, light controlled, but for sports, want to have some ambient light.
Projector placement is something I have been trying to figure out... So Shan, based upon your info, I would assume a 2.4 screen would be maybe be 1.4-1.5 gain if mounted on the ceiling? ( I assume your is 2.8 gain?) Would there be any other adverse effects by doing this (given the screen is retro-reflective? ) I know some of you would say "why not just get a 1.3 to 1.5 gain screen that is not retro-reflective?" Well, that is a good point, but I would not have any flexibility if it turned out to just not be bright enough... With the HP, I could work on an alternate mounting location.... with a normal 1.3 gain screen, it is what it is.
So I guess my question in a nutshell is... will a 2.4 HP screen be as good/bright as a ... let's say... 1.3 if the 2.4 is not mounted at viewer height?