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Post by barnaby on Jan 26, 2017 11:52:49 GMT
I would be using 15" thick rockwool packages (30kg/m3) still wrapped in the original plastic packaging as bass traps and movable gobos/absorbers.
What frequencies would the plastic packaging reflect approximately, in Hz?
By gluing 1-2" thick, 16kg/m3, acoustic foam, on the front sides of the rockwool packages I would be able to absorb the frequencies the plastic packaging would otherwise reflect?
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Post by Hexspa on Jan 27, 2017 3:34:59 GMT
Might be better to make panels out of them instead.
-m
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Post by starandchlorisse on Jan 27, 2017 4:34:48 GMT
I would be using 15" thick rockwool packages (30kg/m3) still wrapped in the original plastic packaging as bass traps and movable gobos/absorbers. What frequencies would the plastic packaging reflect approximately, in Hz? By gluing 1-2" thick, 16kg/m3, acoustic foam, on the front sides of the rockwool packages I would be able to absorb the frequencies the plastic packaging would otherwise reflect? My understanding is that plastic would reflect mid high frequencies and this is ok - besides the first reflections points where you can use good quality foam on top - as you said. I did the same thing with ultra touch cotton insulation though and had good results .
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Post by Ethan Winer on Jan 30, 2017 20:16:48 GMT
It depends on the thickness and type of plastic, but generally it starts to reflect around 500 to 1000 Hz. You can measure this using the REW software!
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