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Originally Posted by Jorg Im about to order some Rock wool for Acoutic treatment and improvement.
I will use it for DIY Bass Traps and HF+HM absorbtion.
I remember that Ethan Winer said here that you should buy rigid Rock Wool with a density between 40kg and 90kg (per sqaure meter).
The insulation company around my corner sells:
60kg and 100kg.
Is 100kg even better or is it already too much??
Im just not sure if Ethan just gave a rough guideline and if "the thicker-the better" is the rule of thumb or if u actually should be within his given numbers.
Ethan, are u maybe here to help?? |
Thicker is not "better". Dense rock wool will actually start to reflect low frequency energy rather than absorb it.
The whole concept behind mounting traps with a space behind them is so that the bass can travel through the bass trap (porous) , bounce off the wall (hard/reflective), then travel BACK THROUGH the bass trap, effectively absorbing the same sound energy twice before it is reflected back at the listener.
It's probably best to use bass trap combinations of different densities and physical thickness throughout your room.
And like a good mix, you'll probably need to do a lot of tweaking to get everything just right!
