I just recently discovered these forums and quickly realized I was in the right place to get good information unfortunately I bought most of my stuff before I stumbled in here, so hopefully I did ok..... Anywho..... Im upgrading my theater , everything is about 6 years old so it all needs to be updated. I have a question regarding the projecter installation. I will be using an Optoma HD20 (goodbye DLP TV!) mounted to the ceiling, right at 12' from the screen. I want to keep it as close to the ceiling as possible to keep the projection up high. (I have 8' ceilings) Its my understanding that the projector will need to be hung upside-down, is that correct? If so, does it need any clearance for cooling on the bottom ( now the top) of the projector? I wasnt going to spend the money on a ceiling mount, I will probably just mount it to some MDF and paint it the same dark brown as my ceiling and then fasten the mdf to the ceiling. I hope that all makes sense: Theater size: 13' wide x 24' long, 8' ceilings, first row of seating on the floor, next row up on an 8" riser. First row of seats are13' from screen, second row is 18' back. I think I will go with 7.1 since the depth of the room seems to suit it. Optoma HD20 Favi 16:9 120" electric screen Def tech ProCinema 600 speakers ( I will need to get something for the rear for 7.1) Panasonic Blu Ray DMP-BDT 21OP with built in wi-fi ( should make netflix more bearable) Yamaha RX-V571 AV Tuner 7.1 15 year old sony laser disc player xbox 360 PS3 Wii Directv HD - DVR