Gearslutz.com - View Single Post - Could someone help out interpreting material's gas flow properties

esaias · 18th February 2008, 02:58 PM

in other words, what does this mean and how does it relate to acoustical/absortion properties (and compared to for example ever so popular OC703). For example here is airflow resistivity properties of PAROC COS 5
( Pääsivu )

45 10^-6 m^2/sPa

http://www.paroc.com/spps/BI_attachm...ance_table.pdf

What does these figures actually mean?

This material was named by Paroc representative when I asked about rigid wool/fiber slabs which had density around 40-50 kg / m^2 although the guy could not give any ideas how the material works in acoustical sense.

I'm just looking for cheaper options than real acoustic rigid wool/fiber which is very expensive. I was thinking of putting these inside larger panels and use real acoustic (3,5cm think with fibreglass cloth) slabs, which I already have, as surfaces.

Thank you,

-Tomi H

18th February 2008, 02:58 PM	#1
esaias Gear addict Join Date: Mar 2004 Location: Helsinki, Finland Posts: 420	Could someone help out interpreting material's gas flow properties in other words, what does this mean and how does it relate to acoustical/absortion properties (and compared to for example ever so popular OC703). For example here is airflow resistivity properties of PAROC COS 5 ( Pääsivu ) 45 10^-6 m^2/sPa http://www.paroc.com/spps/BI_attachm...ance_table.pdf What does these figures actually mean? This material was named by Paroc representative when I asked about rigid wool/fiber slabs which had density around 40-50 kg / m^2 although the guy could not give any ideas how the material works in acoustical sense. I'm just looking for cheaper options than real acoustic rigid wool/fiber which is very expensive. I was thinking of putting these inside larger panels and use real acoustic (3,5cm think with fibreglass cloth) slabs, which I already have, as surfaces. Thank you, -Tomi H