First of all, great thread. Been reading from the get go. Guitarman, you seem to have the innards of this unit down pretty good so perhaps you can offer some setup advice for me.
The unit is on it's way so I don't have it yet but I've been doing some pre-arrival setup with regard to ceiling mount, where the top of my screen falls, etc. and I am beginning to get a little concerned about the ability to work with my current arrangement.
I have a 106" screen and the front of the projector will fall at approximately 12' 6" from the front of the screen. It is in my new basement theater and the ceilings are 7' 6". However, there is a soffit above the screen and in the middle of the room in front of the projector placement (see photos).
Therefore, the projector mount will bring the unit to a hanging point just under the soffit. According to Optoma, the vertical shift is 8.31 inches which means the top of my screen will be higher than the center of the lens. Is this going to be a problem? I can drop my screen about 3", that's it! My center channel sits below my screen, low to the floor. I don't understand much about keystone an what effect this will have on my setup.
Also, and this may be a dumb question but I'll lay claim to being a newbie when it comes to projectors (this is my first), but does the lens have to be positioned so that it falls on the center line of the screen or do you center the centerline of the unit on the centerline of the screen? Again, perhaps this is a dumb question but want to make sure before I mount the ceiling bracket.
Last, if the ceiling mount has 15 degrees of tilt, will that help with the screen height and the vertical shift?
Thanks. Any input would be greatly appreciated.