Bonded acoustical cotton?

  • Thread starter Thread starter omtayslick
  • Start date Start date
2" OC703 flat on wall A Mount
0.17 0.86 1.14 1.07 1.02 0.98 1.00

2" 3lb Bonded Acoustical Cotton flat on wall A Mount
0.35 0.94 1.32 1.22 1.06 1.03 1.15

Coefficents courtesy of www.bobgolds.com

For on wall and spaced reflection panels, the cotton wins hands down. Double at 125Hz and absolutely ZERO issues with reflection at very shallow angles of incidence.

For chunk style bass absorbers, the 703 is just as effective. Depends on exactly what you're going to use it for.

Bryan
 
Hey bpape...

How does the 1.5lb bulk compare at 3.5" flat on a wall compare?
 
The less dense thicker material will extend into the bottom end a bit better but will also provide a hump in absorbtion around 250hz. All depends on what you're room needs. I will say that if you're up for the cutting, the bulk makes a nice alternative for chunk construction. 5.5"x24" will easily do 2 8' corners. The same amount of 703 plus shipping would be more money.

Bryan
 
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