Originally Posted by dc_pilgrim
Be aware, that to avoid a crick in your neck you want your screen to be mounted so that 1/3 of the image height is below your seated eye level. So on a 120" screen 16:9 means its about 105 wide, 59 high. So you want 59/3 or 19.7" below your eye level (which varies depending on your height and seating choice - more complicated still for multiple rows). In my room I am planning to put the bottom of the viewing area at 16.3 inches. My seated eye height is 36".
This applies to other screens too, so you'll see some groan when people mount over a fireplace. That said, it is a rule of thumb, so it can vary some. But I have found it to be a good guide.
My HDMI cord is a 40 footer. Since I had to fish it, I fished two and got them from Blue Jeans (their cheaper tartan line) as opposed to using monoprice. They work fine.
Ethernet is sometimes run to use as with baluns for HDMI. It is also run as a general, all purpose handy thing to have/future proof. For example, you might fire RS232 controls or 12v triggers off it. Or in the future there could be PJ's with internet features, or whatever.
Yeah I've got the outline of my screen on the wall (120") and put it on the wall so 1/3 is below eye level since I read that on this forum before, very helpful advice.
I think my only concern is having to put in a ~3' drop down pole to mount my PJ on since my ceilings are so high. Think it would be quite an eyesore.
Which brings me to my next question...anyone ever used a telescoping down rod to mount their PJ on so it is up to the ceiling when not in use, but can be lowered when needed via a switch on the wall or remote? I was thinking the entire rod would retract into the ceiling so the PJ is flush with the ceiling when it is not in use. Any ideas?
I also thought about building a half wall or something behind the couch and putting the PJ on a shelf but it would ruin my open floor plan and cut the room in half and I would no longer be able to watch TV from the kitchen...and if it were on a shelf, then I have to worry about people walking in front of it and what not.
Another main problem is that to run an HDMI to the PJ, the wall it needs to go up to the ceiling through is an exterior wall and there are only ferring strips and then block wall and insulation in between so it's gonna be pretty hard to run it there. One option would be to move my cable box, Wii, XBOX, etc to a rack in beside the couch that would look like a night stand or small table that belongs there but would hold my devices there so I could run the cable up through an interior wall with no insulation.