Originally posted by Ethan WinerScott,
> I was planning on entire front and 42" of side all the way around. <<br />
That's not the way I'd do it. All rooms need substantial bass trappng, and what you describe does nothing at all for the bass. At the risk of sounding like a broken record, see the Acoustics FAQ, second in the list on my Articles page:
It explains how bass trapping works best in the corners, and there's a sidebar that explains the importance of placing absorption at the first reflection points.
Thanks very much for the reply. OK< all the way around is out. What about front wall?
I read the FAQ yesterday in it's entirety. I admit I started getting glazed over when I got to the second sidebar and will start over there. I got the gist of the bass traps and got a pretty good understanding of the methods used to control stuff. I got the hows, but still am not sure which I need to plan for as I start construction. Unfortunately I'm still not sure where to go. After seeing a post where someone found out the better ceiling tiles are $$$$ and with my square footage, drywall is getting a rethink. I could place a whole lot of conduit and pay a drywaller to come poke and patch a lot of holes if the poster was correct on cost of good tiles (about $2000 for my room tiles only).
So, what I got out of your FAQ so far is bass traps will be necessary. I also saw your studio pic with the membrane traps. Those look most interesting to me beasue I have 2 little ones and am not to keen on filling the room with semi-exposed fiberglass. At least yours was split between the trp types.
But as I try to get this beast going, I'm still unsure what to plan for.
Above my ceiling is a vary large space, whether it be a drop-tile or drywall. It is made of 21" tall trusses 16" OC. Filling that cavity with fiberglass isn't impossible, but that would be a huge volume of fiberglass. You can't really fill inside the truss members without heroic efforts which I'm not going to be able to do. I could get the spaces between the trusses at least partially filled (13x16" batts maybe). I could potentially pay a insul company to stuff the spaces with 13" thick batts on their sides except where I have mechanicals (ducts).
Would that be one huge bass trap? From your FAQ and the mostly over my head discussions with the engineers and experts here, I gather that:
1) If I drywall the ceiling, the insulation above would be rendered almost moot? If I drywall, I may be better served to double it up, isolate it and get some sound control for upstairs (not a requirement, but if a fringe benefit, ok).
2) If I use a drop-tile ceiling (presume cheap tiles) and insulate above, it will make the ceiling dead for a broad spectrum? giving it the illusion of no ceiling which is apparantly good. But I have a dead floor I'm worried about
All these questions but one of my main concerns is that I do want carpet. It's a personal thing and we will use the space for more than home theater. The carpet will make the otherwise cold, hard floor more little-human and female-human friendly. If I MUST to keep the floor live from hosing the acoustics I could use one of the prefab wood floor types but I'd strongly rather not.
I'm happy to build the room and add the treatments later. The membrane sealed type traps look attractive to me as a solution if I can figure out which ones to make and where to put them.
The FAQ directs that the corners are the best spots for the traps. My room Link here
has 2 corners occupied by small 45deg walls with doors in them. One corner is tight for space. One corner (front left) is wide open for a trap.
How would I best deal with these corners?
Mainly for now I need help in deciding a fundamental basic plan I can tweak later. To cover walls or not, drop tile or drywall ceiling, and all considering I want carpet.
Thanks very much for your and all else's help,