I've just received my first projector and 120" screen. I planned to fix the screen to the wall in the lounge and mount the projector to the ceiling to give a 120" image. I've quickly come in to a number of issues. From the research I've done I believe I need to calculate a number of parameters including the viewing distance, the throw distance, the vertical offset, the centre point between the projector and the screen (width), the distance either the projector or the screen needs to be from the ceiling (less the vertical offset) and it seems like there will be various other measurements needed to calculate the exact position of the projector itself. I'd like to mount the screen in the middle of the wall due to limited room but this seems to put massive pressure on the exact position of the projector.
Viewing distance: 2.7 - 4 m (9 - 13 ft)
Throw distance: 4.19 m
Vertical offset: -3" (105% so 5% of height (59") = 3" top screen to centre lens)
The first problem I have is that the viewing distance is less than the throw distance! So impossible to have the projector placed low, say on a table? (As the projector would need to be behind the sofa)!?
Scondly for ceiling mounting, if the throw distance, height and horizontal position of the projector needs to be to the cm, will plasterboard be sufficient to hold it? The projector weights 3.473 kgs (7.657 lbs) which doesn't include the mount (not yet purchased). If the projector needs to be fitted to a joist it will be extremely unlikely the joist will be in the perfect position (maybe either distance or width can be achieved depending on which way the joists run but that's just one of 3 parameters). How do people usually deal with this issue? Can you get fully adjustable mounts (height/width/distance?). Or do I need to get someone in to pull the ceiling down to fit a stronger board and then replaster and paint?
The projector has no lens shift (vertical or horizontal) and I hear keystone adjustment is a big no no for trying to get the best quality for your money.
Any tips or advice as this is all new to me and wondering if I'm missing something.
Thanks
Viewing distance: 2.7 - 4 m (9 - 13 ft)
Throw distance: 4.19 m
Vertical offset: -3" (105% so 5% of height (59") = 3" top screen to centre lens)
The first problem I have is that the viewing distance is less than the throw distance! So impossible to have the projector placed low, say on a table? (As the projector would need to be behind the sofa)!?
Scondly for ceiling mounting, if the throw distance, height and horizontal position of the projector needs to be to the cm, will plasterboard be sufficient to hold it? The projector weights 3.473 kgs (7.657 lbs) which doesn't include the mount (not yet purchased). If the projector needs to be fitted to a joist it will be extremely unlikely the joist will be in the perfect position (maybe either distance or width can be achieved depending on which way the joists run but that's just one of 3 parameters). How do people usually deal with this issue? Can you get fully adjustable mounts (height/width/distance?). Or do I need to get someone in to pull the ceiling down to fit a stronger board and then replaster and paint?
The projector has no lens shift (vertical or horizontal) and I hear keystone adjustment is a big no no for trying to get the best quality for your money.
Any tips or advice as this is all new to me and wondering if I'm missing something.
Thanks