Acoustic TReatments - What, How much, & Where?



Hello all you room treatmentfiles.

Being at the point where I probably should have begun, now, I want to 'treat' the room, acoustically. Economic reasons say I might have to go by way of ‘foam’ stick ups on the wall, but I’d really rather not. The desired alternative, however, is panels, and they are mighty pricey. OK.

Reading over the online info at various panel makers websites, (ASC, RPG, GIK, etc), some panels have different ranges of absorbtion, reflection, etc. according to the makers.

Q: How do you know just the amount of absorbtion, or diffusion to incorporate into the room via panels, traps, etc.?

Is there some Rosetta stone that will decrypt this for me… or is it all “trial & ear-ror”?

GIK panels seem the most feasible cost alternative, presently.

Any suggestions or related experiences in regard to sources for, or treatments of, will be more than a welcome thing.

Thank you
blindjim
I second Newbee's last comments - furniture, plants, bookshelves, absoption behind the listening position, diffusers on side walls and moving speakers far away from rear wall and keeping listening position around 40% from the wall behind your listening position are all good suggestions (don't sit bang in the middle of the room).

I built a log fire place as an LF sound absorber/bass trap on the rear wall ....of course this is hardly as effective as the real thing (large GIK, Realtraps or other forms of large surface area thick panels) but aesthetically it is so much more acceptable.

Newbee
thanks again.... i do appreciate it. much. I ttend to agree with the non treated esthetics. though I don't mind adding something somewhere if indeed the end result is more than fair to middlin'. I've long since thought about the notion of using some ferns... trees... shrubs.. etc. though fake ones like the silk items are about the same money as the Echo busters & Skylines stuff. Whoa! I had no idea till recently. I will have a look about... the issue isn't the doing, it's the safety in doing it where details count. that's where I have a real challenge. it's been recommended more than once that I refrain from using power tools. i tend to ignore that portion much of the time.. especially if it's rough work. Fine stuff does cause me some problems. the 'eye's' do not, in fact, have it anymore.

Fishboat
Whoa! thanks a heap. I'll most certainly have a look about. thank you very much.

I couldn't do the graph thing, naturally, but I do have the area drawn up via a PC program I use a lot for all sorts of jobs (room arranger) super little gizmo... it's shareware.
So this weekend I'll fax it off to Auralexx. I spoke with them recently too. the idea of 'foaming' the room dosen't appeal to me terribly. Some however seems in order. Like the corners and ceilings.

Shadorne
I got the speakers about as far out into the room as I'd care to go right now. they can go more, but the drivers are off the wall, respectively, 47.5 and 32.5, from front and side walls. Roughly 7.5ft +/- apart. I have a "faux fireplace' directly in the middle of the speakers. had a big TV in there till last week. hung some heavy curtains over the gaping hole. Now it's a 40+ sq. ft. 'closet'. I do sit about right where you said to sit.. Not quite half ways back... equa distance from the speakers as they are apart. give or take a couple inches. Behind me is a wall of more drapes, a really long material covered couch... & that's it.

Picking out doors maybe this weekend.. to cover the three openings FP, LEFT HALL & RIGHT KITCHEN. So past the corners, most all of these 'treatments' will be on stands, unless i do the 'brick-a-brack' shelf here and there bit Newbee suggested. ...and nno, I'm gonna keep the false wall/frieplace for two reasons... I need the closet space, and it makes the room dimensions almsot spot on for a listening room. I may well add something to the back of the thin sheet rock of that wall to help things out a bit.
BJ,
I wouldn't go with the auralex foam either, but the drawing you'll get from auralex will give you an idea of room treatment placement. From that point you can address the areas any way that suits you. I'll be building my room treatments this winter...looks like a no brainer. I'll be going with the super chunk approach with rockwool or owens corning 703 or 705. Some panels also.
CHECK OUT ACCOUSTICAL SOLUTIONS BEFORE YOU MAKE ANY DECISIONS.
GREAT PRICES....ABSOLUTELY THE LOWEST AROUND FOR FABRIC COVERED WALL PANELS!!!

Jaf2290

Thanks much, I'll look into it some more... You have used or dealt with these folks previously?

Shame they don't trot out the shipping info prior to placing the order, huh?