Originally Posted by Tony_YYZ
... My house came with a finished basement and this is going to be challenging. The walls are not very forgiving for what I want to do ... and since there is a finished ceiling, it would make mounting a projector from there a bit more difficult. I'm not sure if a wall mounted solution with an arm would be feasible.
Your room is a challenge. What kind of project are you up for, gutting the room and starting from scratch, like KBMAN did recently -- HT of the Month: Duck and Cover
-- or do you want to just use the room as it presently exists?
Are the obstructions on the ceiling HVAC, like the A-wall obstruction is? Or can you drill in and anchor safely into the ceiling wherever you choose?
Wall mounting with arms is possible, but the weight of the PJ will cause longer arms to sag slightly, versus whatever theoretical measurements you try to run about exactly where the PJ would be hanging in space before it was actually there. Then the ongoing headache with the arms and PJ moving slightly, screwing up your PQ every time that happens. And the vibration headaches that can happen, even for more robustly anchored setups. Projector vibration: is damage really an issue? I spoke to a pro and......
Plus how is that going to look just appearance-wise?
If it ends up that you want to wall-mount instead of ceiling-mount, you might consider a fixed wall / shelf mount solution rather than arms, or at minimum, a really robust mounting kit.
You don't include measurements on where the ceiling obstructions are in the room, nor how many inches of vertical space each occupies, nor (perhaps most importantly) what your goal is for your projected image. Do you want to shoot from an angle that lets you project up under those ceiling obstructions? How big of an image do you want? What's the throw distance from in front of the last ceiling obstacle? It's labeled beam, so maybe you could anchor safely there, but it looks too close to the screen to work.
Here's a throw calculator from Epson. Play around with it to get some ideas on what is possible. Or you can check whether your manufacturer offers a similar tool on their website. http://www.epson.com/alf_upload/land...ce-calculator/
And read this thread, it will get you up to speed on how many times you will need to measure and run calculations to get this right, and it may also suggest some other solutions. Yup, I actually did this!
If projection looks like too much of a headache, the good news is that flat panel displays are bigger and cheaper every day.
You might re-label your picture 2 of 6, which is confusing, since walls A and B don't touch.