Originally Posted by TMcG
OK, just now coming up for a gasp of air with sufficient time to post. Last weekend could be summed up in two words: projectile vomit. Ahhhh...the joy of young kids, right?
A best practice for HVAC is supply at the front and return at the rear. Given your room layout and supply ducts, I would absolutely shorten them so they discharge near the front of the room. You need to use a diffuser which blows away from the screen so the screen material itself doesn't act like a sail and 'flap' in the HVAC movement. If you are using two 7" flex supplies in the front, a single 8" return line will be sufficient in most cases (hard to say exactly without measurements and full detail of your system). Put the rear return slightly behind the seating area and off to either one side or another.
Your response to Tedd above confuses me since your home is a single level and you have full access to the theater ceiling from the attic above. Your supply and return takeoffs would attach to the main trunk lines, go into the attic and down through the theater ceiling. Easy peasy.
Are you looking to enclose the projector as a way of removing projector heat from the room? If so, there are stand-alone systems to force ventilate the box, discharging outside the theater...OR...you can attach a 4" flex duct extension off the new return air box to pull the heat into your HVAC's return system. This is what I am doing, FYI. I can get into more detail later, but you will need to introduce an in-line damper to tailor the amount of air you are pulling through the projector box with the HVAC system.
For speakers, I'd highly recommend 1099s for your LCRs. You would be hard-pressed to find any better for the price. Volt 6s or Volt 10s for sides / rears...assuming you can build them into your room to meet your goal of all speakers being hidden. This also makes them tough to use for Atmos if your goal is to hide the speakers. The bottom line is you may want to consider exposing the Atmos speakers so you can get the proper positioning toward the MLP. Otherwise you are left with some very pricey in-ceiling speakers which have the necessary polar response / dispersion to properly do Atmos while pointing straight down and flush with the ceiling.
For the screen, have you considered a constant image area screen size of 2.0:1. This will give you the best of both worlds....the largest 16:9 image possible in your room and the largest cinemascope image possible in your room. Going with a 2.40:1 screen is going to limit the size of your 16:9 image. Since you game and watch a lot of TV, this could be a big minus. Just something for you to consider before selecting your next screen.
How do you plan to get the power to your new powered reclining chairs?
Tim, thank you for taking the time to advise me. I know how busy life gets with 2 youngsters puking everywhere. Don't worry, though. The next 18 years will fly by. And then they'll be puking for other reasons. And hopefully that's not on the way home in a cop car like me. Or teen pregnancy like, well, me and my wife (we got lucky that we actually like each other after 20 years so it worked out ok for the Voth family). But that's enough about my life. Now down to business.
My plan for the return in the back of the room is what I was hoping would be a best practice so I'm good there.
's suggestion was confusing to me. I hope he chimes back in because he's always very helpful as well. I'm not sure what the purpose of cutting into the main trunk would be in my situation so I've redrawn my HVAC plan. I have 2 lines going into the room already that I've pretty much converted to flex so I don't see the need to cut into the trunk and move lines around. Ted said I could shrink the soffits on one side. I don't have soffits in this room. Maybe I'm not understanding what he meant by soffits. I could move the lines if need be but I'm not sure I see why I would want to go through with that. I'm just wanting to cut some flex duct here and there and add little where needed but again, I'm willing to listen if there are better ways than what I'm thinking.
Also, do remember that I don't have a return trunk in the attic. I have a central return in a hallway and the inside a/c unit is in a bedroom closet. There is no reasonable way for me to tie into it all. Here are pictures of what I have.
First closet in bedroom. You can see the riser that is actually the return. Yeah, it's weird.
Yes that's Santiago the chinchilla. He's good people.
Second closet in bedroom with A/C unit
It's hard to see the unit but its behind the clothes.
In my mind, the only thing I can do is to run a return from the theater room as shown in the drawing, to this location right above my main return and put an inline duct fan on the line to ensure that the air gets pulled out of the room.
I want to use some sort of Insteon controller to turn it on/off. Maybe the Insteon hub can do if/then statements. We'll have to see.
It will be essentially, a forced air return. The air will be pulled from the theater, to right where the return is in the hallway. Is it the best way to do it? I would say probably not. But I don't know of any other way to have a decent amount of return air in a room that is almost sealed off from the rest of the house. Every other room has a good sized gap under the door or no door at all. I hope the pictures make sense so you can tell if I'm headed in the right direction.
As far as the projector, I'm not really set up for a hush box in this room. I could modify my removable panels that cover up my shelves in the back of the room but I wasn't planning on building a box in my room.
Speakers - Still not sure what I'm doing there. I may keep my M&K surrounds since they don't look bad by any means. They are actually stylish and modern looking even though they are 15 years old. I do like those 1099's like you suggested for the LCR's. But there are a lot of good looking products from DIY Soundgroup so I'm going to have to agonize over the speaker quandary for a while it seems.
Screen - I'm going to research more about the CIA setup. I know it will be a bit more expensive because of the extra masking panels but that may not matter. I also have to ensure that if I go 16:9 or CIA, that the screen won't so tall that heads get in seats, get in the way. I don't think it will be a problem for CIA but it may be a problem for 16:9.
Seating - power recliners aren't a necessity. I would like them but it may not be in the cards. In order to get power to the chairs, I would buy super fancy looking end table and place it on the far side of the room (essentially blocking an aisle) and hiding the cord under that or possibly buying a sectional.