[ToddSTS]

Thanks in Advance.

So I own some Michael Greene Roomtunes (triangles, rectangles) a whole Tunepack. I bought it when I was single, which is no longer the case and I officially apologize for laughing to myself when someone mentioned WAF before as I am now subject to it as well.   The Tunepack is allowed in my "man cave" but I would like to take care of the slap echo and ringing in the main room where the "ugly triangle thingies" aren't allowed.  I have some 2" 703 (and some burlap that matches the paint pretty well) and I was thinking of making a 4" thick square of it about 12" x 12" or so and put it in the upper corners flush mounted to the ceiling to try and get rid of the horn effect. 

Link to gallery image of concept
http://www.audiocircle.com/index.php?action=gallery;area=browse;album=1419&pos=0

So, now I'm curious if the folks on this informative forum think that will help.  I realize its not much material and won't help at all with bass (which I don't think the roomtunes do much for either).  But I figured I would gauge opinion before I start cutting and mounting.  I was really happy with the effect of the roomtunes in my previous room and wanted to get there in a way that would look more like a mini-soffit.

If this works I will look at sneaking some bass trapping in there next. 

Thanks.

Todd

[Ethan Winer]

I would like to take care of the slap echo and ringing ... I was thinking of making a 4" thick square of it about 12" x 12" or so and put it in the upper corners flush mounted to the ceiling

That won't do much because it's too small, and it certainly won't do what you want because it's not in the proper place. Slap echo and ringing are caused by larger areas of parallel reflecting surface. So the way to solve that is with large areas of absorption on those surfaces. If you're limited by appearance, you can cover the absorption with soft-fabric wall hangings. But you need to treat the large surfaces, not use small squares in the room corners.

--Ethan

[ToddSTS]

Thanks Ethan, I'll start looking at other options.

I wish the military would hurry up and get that cloaking-device-like camouflage perfected so the technology could trickle down to us poor married guys and our acoustic treatments.   

Todd

[bpape]

While it's certainly not going to be optimal nor enough, it will likely make a difference.  Any way we can maybe do an 8" cube so we can get more thickness in all 3 dimensions? 

If it's a choice of this or nothing, I'll take this any day.

Bryan

[richidoo]

The concept of the corner pillow or 8th nerve triangle is that midrange frequencies come into the corner, get their phase screwed up, reflect off sheetrock to sound cold, then come back aimed at your head and amplified by the big horn formed by the walls. The pillows and 8th nerve version with reflector on the front aim to fix the problem, and they work well in that roll, with a small visual footprint.

If you have a sparsely decorated room, you would probably find as Ethan suggests that the midrange reverb is a worse problem than the corner distortions, but can be more challenging to correct when a talented decorator is in the mix, especially if she "likes" the sparse motif.    A plush traditional decor with fabric furniture, rugs, drapes is probably good enough to tame overall reverb, and will make the benefit of treating the corner distortion even more obvious with the other mid freq pollution reduced.

A painted, hard surface DIY triangle would be least conspicuous and work better than your pillows for purifying midrange reflections in the corner, but Bryan's block of solid absorbtion or a full size "Tri-corner" would give improvement over more frequencies. Depends on what your decorator will allow. Congrats on your wedding. In about 15 years you will be laughing at the WAF stories again.