I think a 12x12x7 (LxWxH) foot room would suffice. The room it would be built in is not that much larger, but it just seems simpler to put up walls rather than put stuff on existing walls.
Keep in mind I rent, so as little damage done and as "transportable" as possible the better.
That said, this room within a room will be for home theater use exclusively. I want to be able to listen at near reference levels without any worry of disturbing neighbors. I will also appreciate the improved acoustics and dead silence inside the room.
If I can do it for around 3000 dollars it seems like it'd be worth it, seeing as I'd never have to jump for the remote, I would never be bothered by outside noise, and I could remain living in my cheap apt instead of feeling like I have to rent a house to watch/listen to movies the way it should be done.
I'm not great at construction so I would pay for some assistance. But with parts and labor, how much should it cost to build a room with pretty good acoustics and pretty good isolation. Keep in mind the isolation doesn't have to be PERFECT I mean I'm not going to be shooting guns in there.
Thanks !