Finally some updates. I decided since my space wasn't ideal (like most), that I would just treat this as a learning exercise. So I tried to keep the costs fairly low but still do things to a level I could be proud of.
I had a friend visit a few weeks ago and he stayed until Monday. We got quite a bit accomplished, but due to a rather nasty meeting between his truck and a guardrail, we lost a few days. There were lots of little projects I had to put on hold so that we could finish the important things like the riser and acoustic treatments. I've got some work left to do, but overall i'm really impressed with where it stands now and what the final product should look like.
We started with a rather ugly room covered in wood paneling with the rear couch sitting on cement blocks. Sorry for the blurry shots, I still haven't pulled out the DSLR to take some proper pictures.
First objective was the riser. We built it on top of the carpet. I didn't really want to replace carpet, and I was worried pulling it up for the riser would lead to it coming up in the rest of the room. Plus this way it didn't need the roofing felt.
We also got the wood paneling and trim removed. Didn't have enough space to put the couches elsewhere, so they just moved around with plastic to somewhere less in the way. Put up 2x3 furring strips around the top, middle, and bottom of the room. The 2x3s were big enough to hide 1" OC703 behind on the bottom, and gave a decent amount of room for stapling fabric to. We framed out the back corners for bass traps too.
The shortest section of wall got our first attempt at fabric. The fabric was Dazian Janus black and "graphite". We had some issues with wrinkling the first try, you can see it on the black towards the bottom staples. Either the tips from some threads in here were a huge help, or using 4 times as many staples really made a difference. Either way, we started getting the hang of it. The top corner going around my stupid HVAC soffit was the biggest challenge. Also notice the flat black ceiling paint on top of the knock-down texture. The texture must have been applied by the previous homeowners, it was so thick that it kept breaking off into the paint and leaving white specs as i rolled the flat black on.
Moved to the back wall between the bass traps, and then the longest of the two side walls. We used some closed cell foam in the window wells to block out light, we had it cut and ready, but kinda forgot to install it until it was almost too late.
Finally, all walls finished. Just need frames to go over the corner bass traps and trim.
We managed to get trim up, but I didn't buy enough because I knew we'd have to go back to Home Depot before we were done. Turned out we had our hands full with finishing other projects and didn't have time to get back to the store before my buddy had to leave. I'll have to finish up the trim as soon as I get motivated to finish things. And I either need to paint the riser or find an area rug for it.
Overall, I think things turned out pretty good.
I guess I don't have any pictures of the screen wall. It's not covered in fabric yet, but I plan on using the black Dazian and mounting the screen on top of that. There is a good 2" of OC703 on the whole front wall though.
I tried to pay attention to dimensions and basic rules of thumb on seating distance and projection distance and heights and whatnot, but we mounted the shelf for the projector a little too high. Currently it cannot project to the top of the screen because the soffit gets in the way. I can't move the shelf because we mounted a 2x8 behind the fabric and the shelf is already mounted as low as it can go on the 2x8, i could hang the projector from the mount instead though,but then it's too low and heads from the rear seats might interfere. I think my only option is to drop the screen 4 inches and have the rear seats suffer through losing a bit of the bottom to front row heads when reclined. I could add another layer of 3/4" OSB to the riser to help a bit, but I doubt that would be enough.
I took acoustic measurements with a UMIK1 and REW before any room treatments. The room definitely sounds better now, but clapping or snapping while on the riser still produces a bad echo. Experimenting with placement of extra 703 seemed to show that some on the ceiling might help that problem. I would also like to treat the corner caused by the soffit, I imagine it's causing some issues.
Lastly, I have a LilWrecker all cut out and marked up, ready to be assembled. I am just waiting on some free time to glue it all together. I have a balanced miniDSP that I'd planned on using with my Pioneer, but currently I have been unable to get any input to register on the software RMS meters. I've tried both the LFE out and a 1000hz tone from my laptop's headphone out. Although there's voltage on the minidsp's inputs, the meters don't read anything and the outputs don't show a correlation to changes in volume. Hopefully their forums will help me figure that one out so I can make the most out of my 15" alpine.