Reflexion Filter Idea

So I had an idea for a reflexion after another thread that I think will work great  for very little effort and $$$.
 
Heres what I used:
Moving Blanket
2"x2" ballisters
Expanded Foam
Lots of staples
 

 

 

 
Panels ready to be covered and small hinges to tie them together
 

 
It will sit on a knee wall by VOX area (No Booth) Heaight of coverage will be from approx 4' to 6 1/2' high.
Savings compared to purchase $290 (About $10 to bulid)

Yeah I wouldn't expect you to get much attenuation from this other than the really high end presence (primarily from the blanket - that foam's not going to be doing anything). Fill 'em with 703 and you'll get much better mileage.

Though, you have clearly finished it. How did it sound? Was it what you expected?

Havent done anything yet. Had a show tonight to go to. Yeh I see we finally got the good 703 into our lows store after I did the foam thing. Oh well. They are going to be more for keeping unwanted noises from hitting the mic which a fast check from where I was at with the pics seems like it is doing a great job. As far as any objective measurements, well that is way beyond me. Im kind of the guy that if it does show up in track view and/or through the speakers, Im good with that. Down the road as I learn might be a different story. Just thought for sure it would be better than a cardboard box   . Not knocking the cardboard cause I have used it in the past with good results for what we did,

There is a type of resonant absorber that uses perforations in a semi-flexible panel such as the perfboard you hang tools on in the garage. It's used when you need to extend and/or tune bass traps to a low frequency but have limited space.

My guess is they're doing something similar, except that the "low-frequency" they're extending down to is in the midrange. A 1-inch absorber made of anything is going to have very limited effectiveness below about 3KHz. 

You could achieve the same effect by doubling or tripling the thickness of the 703.