Originally Posted by Bluelude1
I have a JVC DLA-RS1 that will be mounted from the ceiling with a 14' throw to a 106" screen. The question I have after reading other threads about Chief mounts is which mount would be the best way to go when the distance from the top of the screen to the ceiling is 32" .
The RS1 has a max lens shift of 30% screen height, so for your 52" tall screen, that's about 15 1/2". This means that the center of the lens can be no more than 15 1/2" above the top viewable edge of your screen. Less is OK.
The center of the RS1 lens to the bottom of the projector is 3", and a Chief RPA-184 is about 2 1/4".
This means that if you have 32" from the top viewable edge of the screen to the ceiling, you still need to make up 11 1/4".
32" - 15 1/2" - 3" - 2 1/4" = 11 1/4"
I would go with either a 12" or an 18" extension column. Theoretically, a 12" would work, but you're cutting it pretty close.
A Chief CMA101 ceiling adapter
A Chief RPA-184 mount
And either a Chief CMA012 or a CMA018 (12" or 18", respectively) extension column.
Another option for the extension column is to go down to your local Home Depot and pick up a length of 1 1/2" NPT pipe in the plumbing section. It comes in various pre-cut lengths, and they will make a custom length for you if need be. You can just shoot it with a little flat black spray paint.