I am new to your thread, so forgive me for a long 1st post.
- A lot of people follow a thread without posting numerous and inane replies. I love that, because it makes the threads in which I am interested easier to read. The people participating in this thread actually ADD to the knowledge. Thank you all.
- Wood vs Steel framing members - IMHO, you made excellent choices. Wood framing sounds better (less resonance) and is MUCH easier to anchor items like drywall, surround speakers, artwork, acoustic panels, etc
- The use of a steel member for your bottom header, anchored with isolation hardware, is GENIUS!! I have never seen someone combine steel and wood framing components to such an advantage. Well done, sir. I WILL be stealing that idea.
- I also like your combination of DIY and purchased diffusors. The 2'x2' diffusors resemble the Auralex branded items that I own and your ceiling treatment is both cost effective and functional.
- One of my concerns are the lateral braces in your framing. Those are common here in the USA on walls taller than 8' and they are a certified "bitch" for retrofitting wiring, especially with insulation. The horizontal blocking will hinder future wiring runs, so insure your room is "future proofed" with conduit runs that you pre-install. Simple PVC pipe works very well. They don't completely prevent future runs, but a little planning makes future upgrades much easier.
- I agree that skilled tradesmen, especially finish carpenters, wood joiners, painters and plasterers are on the decline. Those guys are true artists and the time it takes to become proficient in plaster and fine joinery seems beyond the grasp of recent generations. Highly skilled woodworkers seem to be limited to VERY expensive providers in the US and areas of Southeast Asia/Pacific Rim like Thailand and Taiwan. I am into boats (42' plus trawlers/sport fisherman and such) and those guys are VERY hard to find.
- If you will permit me, I think I have seen suppliers of recording studio acoustic supplies, like Auralex, Sonex, etc. which could have helped you shorten timelines and decrease design/build effort. Perhaps you looked at those and I missed it in the thread. I see opportunities like Z-channel to isolate drywall, floor pucks to isolate seating areas, absorption/diffusion and other areas. Auralex has proven especially helpful to me. There are many others.
- Kudos for the DIY speaker kits and corner sub installs. I am definitely stealing your sub installs, but adapting them to soffits, stage faces, corners, etc... BTW, that veneer is gorgeous!
- The red carpeting is great, but it will, practically, glow during video presentations, especially if you go to a large screen and powerful projector in the future.
- Caulking - Wow the caulk you have put out!!! I know that it helps with leakage and your efforts are worthwhile. I have two thoughts. One, is some kind of air sprayable foam, elastomeric roofing cover or "automotive undercoating" which could seal all those T&G joints and other joints that you sealed manually with caulk. Two, I fell in love with my Ryobi battery powered caulk gun. It has a consistent caulk output and my forearms don't cramp after the first hour!
- Despite my criticism/suggestions, I LOVE... LOVE... LOVE... your installation. Keep on!
- MY SECOND MOST IMPORTANT POINT - This is all done by ONE guy???? I know you had some guests help out, but this is VERY impressive and inspirational to me, as I prefer to work alone. Also, kudos for working in a space full of the stuff that has to stay there. An empty room, with storage elsewhere, spoils a lot of us in the US where space is not so expensive.
- MY MOST IMPORTANT POINT! - I am so impressed by the polite and respectful posts on this thread. There are so many websites where people shout back and forth about what a dumbass the other guy is... I joined this site BECAUSE of THIS thread! My favorite observation is how aware everyone is that language barriers play such a key role. I don't know what your first language is, but your English is a level of magnitude better than ANY second language that I speak.
I look forward to future progress on your build.
Thank you for posting it.
Again, apologies for the long post.