As far as size, the screen rolls up into a bag about 3ft in diameter and 3.5 ft tall. But in relaity, there is no way we can get it back in there so it is about 3' diamter and 5' tall. It weighs a lot, so I use a dolly with a rope around it to move it. Luckily I have taken over most of the storage area underneath the stairs it is sitting on.
For a projector I am using the Infocus IN42. 3500 lumens so I can start showing pictures at 8:30 right now. Usually start the movie at 8:45. We have a preview about our new downtown that we show before hand. I bought a pelican case to move it with.
For DVD, I am using an OPPO 981. Upconverts to 1080i, comes highly rated. I figure garbage in, garbage out so the better picture I can send to the projector the better it will be at 320 inches.
Sound system I have 3 amps. All crown amps. Right now, I have two that run 4 speakers in a left right setup. The last runs the sub amp. The OPPO converts 5.1 to seperate outputs, so on the mixer I have it seperated into 1,2 and the sub on 3 leaving output 4 still open.
I was going for a surrround sound system, but it would require another amp and another mixer or just 1 different mixer to keep the signals seperate. Center, FL FR, RR RL, Sub. After the first two showings my Superintendent wanted to know exactly how much more expensive it would be. (Come on, how cool would surround sound be!!)
Our sound system is really powerful, you could probably go for a smaller system and save money but we wanted some versatility out of it so this is what we went with.
We are showing Harry Potter this Wednesday which coincides with the release of the new one.