John Sayers' Recording Studio Design Forum Archive

Hello,

i was wondering if i can built a broadband absorber with some isover stuff, but i don't get any values for the density (in Germany). Also i did not find a distribution for OC703 here. Also i could not find any material/sources with the forums search function that i can get in Germany.

All i get is something like kPa*s/m^2 which mean somthing like the "resistance of the material to the air floating through" instead of density. (It is "kiloPascal times seconds devided by square-meter" with kiloPascal beeing the euro measure for air-preasure)

Does anybody know this?

Can i use this:

http://www.isover.de/Downloads/tdaten/tddh0030.pdf

or this: (which is used for isolation in roofs)

http://www.isover.de/Downloads/tdaten/tddh0007.pdf

I still have one roll of that stuff left, maybe i should weight it and calculate the density?

I can also get Rockwool products here maybe i should concentrate on this. The goal is to build some absorbers for my room, details will come up as soon as the isolation of the roof is finished.

Any help appreciated, thank you very much.

Harald

Looking at the absorption data (and rmemebering diferences between ASTM and DIN testing) the first is acoustically equivalent to 703 for this purpose.

Good luck!
Andre

Hi,

i was looking for the absorption data of 703 all over their website but could not find it. So thanks, i think i try the Isover acoustics.

Harald

Here 'tiz - not that easy to find -

http://www.owenscorning.com/comminsul/d ... Series.pdf

Steve

I don't know if you still need it, but in Austria the Isover FDP (Fassadendämmplatte) has 50 kg/m³, The KDP (Kellerdeckendämmplatte) has 35 kg/m³. (both are glasswool)

Other good Company: Heralan
Heralan FP (55kg/m³)
Heralan FPL (35kg/m³) ....both are rockwool.

and of course

Rockwool Fixrock 035 (50kg/m³) ...which I use for inroom acoustics btw.
Rockwool Thermarock 40 (44kg/m³)

I bet you get the same stuff in Germany.

Hope this helps

Update:

The Product Names of Austria (NOT Australia ) and Germany are different, so use this if you are in Germany:

Isover:

TopDec
http://www.isover.de/desktopdefault.asp ... _read-132/

Akustik HWP2
http://www.isover.de/desktopdefault.asp ... _read-108/

Akustik SSP2
http://www.isover.de/desktopdefault.asp ... 2_read-95/

Isover FSP2:
http://www.isover.de/desktopdefault.asp ... _read-112/

Regards, Harald

Thanks Harald!

Andre