I'm finishing my basement and working on the insulation, drywall will be going up in a few weeks. I am about to run 12ga wire for all of the speakers and need help on placement. The area is one big room that will be open, with probably a bar-height table, foosball, arcade cabinet, darts, etc behind the theatre area. The theate area only takes up about 1/3 of the length of the room. I positioned it this way so that everyone in the back of the room could still see the screen if we are just hanging out. The entire room is 17' wide by 46' long, with the theatre area being about 17-18' of the length. There is a wet bar/beverage counter that starts around 12'9" from the side of the room where the projector screen will be that interferes with how far back I can place the side speaker. The ceilings are 9' high.
I have pre-wired cat6, coax, and an HDMI cable for an overhead projector. The current budget for electronics is around 5K. 2K or so for the projector, I'm thinking Sony HW45ES currently, and then around 3k for receiver + 10(7.1.2) speakers. I believe I have room for a 120" screen with the current configuration, I have the hdmi ran about 15.5' back from the wall. For seating I will probably do a U-shaped sectional as this will mostly be an entertaining area that we will mostly use for movies + games. Currently I plan on going with Polk Audio speakers as the seem to hit my price/performance target pretty well. Below I'm using links for Crutchfield, though I'm not sure yet where I will actually buy them since I'm still 4 months or so away from needing them.
Currently I only plan on getting a 9 channel amp, as going up to 11 channel usually doubles the price and I would rather not spend more than 6-700 for a receiver.
I would like to do in-wall speakers for the side speakers, and then 2 Atmos-height speakers in-ceiling in front of the primary seating area. I'm not quite sure what to do about the rear speakers. If you look at the attached floorplan I'm constrained by the location of the wet bar/beverage station for my side speakers, centered around 12'6" back, so that is where I plan on placing the middle of the seat on the sectional.
1.) The in-wall side speakers will be at ear level, I've seen the dolby speaker setup guide, that says the side speakers should be at 90-110'. Will it have too much of a negative effect if the are at say, 80'?
2.) For my in-wall speakers I'm looking at something like the 65 RT. Anyone see any issues?
3.) The rear speakers I'm not sure if I should just go in-ceiling, like what I'll be using for the front Atmos-height speakers, something like these RC60i. Or if I should instead mount satellite's for the rear from the ceiling and direct them towards the seating position. A speaker like the Blackstone TL2, using mounts that angle down from the ceiling. Another alternative, though I'm not sure if I'm a fan is getting speaker stands and placing them behind the sectional. I would worry the would be knocked over easily by kids running around.
4.) For the front speakers, should I run wire to them through the wall, or not? I plan on just using a low profile cabinet that sits below the screen with the center channel on top and the receiver + equipment inside, so the front doesn't need to be super-clean as the cabinet will be in the way.
5.) I plan on using a banana jack binding plate for where the speaker wires all come back by the receiver Is there something similar, but not quite as big as a 1 gang box to use for the fronts and/or rears?
6.) I am having someone hang and finish the drywall. Do I just have them cut out all of the holes? Do I need to purchase speaker brackets for the in-wall and in-ceiling speakers?
7.) Currently I am putting mineral wool between the joists and between the walls that separate the internal rooms, do I need to worry about space or build a box for the in-ceiling and/or in-wall speakers?
Finally got to 5 posts. Here is the Layout
Thanks for all your help/comments!