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DIY Acoustic Material Addressed...
Old 23rd November 2011
Gear nut
Cegor's Avatar

Thread Starter
DIY Acoustic Material Addressed...

Hello guys,

I come to you with the concerns of stepping into the world that is acoustic treatment. I understand this topic has been discussed hundreds of times, but I hope that my post could end up being a sticky for those with my same question.

For those of us who unfortunately can not afford proffesional acoustic treatment, we're left with the DIY route.

To my knowledge you want to absorb the primary reflection points and diffuse the back wall (correct me if Im mistaken).

With Lowes carrying 0,15,23, and 30 R Stone Wool along with Johns Manville Fiberglass R 13, 19 and 30 (again might have missed some), what would be the best route to take if your tool supply primarely consisted of just said insulation?

I've checked many threads on here but still seem to come back to these questions.


Old 24th November 2011
Gear Head

I'm no expert... But in general terms, yes. Treat the reflection points, trap the corners... And diffuse the back. If you diffuse, though, you'll need some distance between the diffusion and the listening position. Go to real and check out their video on diffusion. They also have a lot of info on trapping.

What part of the country do you live in? With a little bit of research, you can easily find a distributor that carries rigid fiber glass in 3 and 6 pounds
Old 29th November 2011
Gear nut
Cegor's Avatar

Thread Starter
Im actually in the heart of Los Angeles. Not to contradict my post above, but I got some OC703 today from a guy on craigslist who was dissembling his studio. Realized that if Im gonna do acoustics I should do it right the first time or at least to where I wont be like "I wonder if I should have __________".
Old 16th January 2012
Lives for gear
andrebrito's Avatar

Diffusion in the back should only be used if your listening position is spaced at least 3 times the wavelenght of the diffuser low cutoff frequency...

meaning by other words that if you are in a small room you should use absorption or diffusion should be made with thin material so the cutoff frequency goes up. You can also choose to use an N13 instead of an N7 order QRD for that matter.
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