Absorbers - how far off wall / ceiling

dnafe · Post by **dnafe** » Tue Nov 01, 2005 10:13 pm

Hi all

I'm sure this has been asked a million times but my search has come up empty so...

Is there a way to determine the relationship between frequencies absorbed and distance (2'X4' 703) panels are hung/suspended from walls/ceilings?

Thanks in advance

Don

Dude · Post by **Dude** » Wed Nov 02, 2005 3:37 am

I read somewhere on this forum or the one at homerecording.com that it's a good idea to space the panel away from the wall or ceiling the same distance as the panel is thick. So, a panel that's 3" thick would be placed 3" from the wall/ceiling for good broadband absorption. Targeting specific frequencies is more likely a job for a slot resonator. I'm not sure. Somebody who knows the science of it all will hopefully chime in so, you and I both can know some more on the subject.

Dude

Ethan Winer · Post by **Ethan Winer** » Wed Nov 02, 2005 5:52 am

Dude,

> I read somewhere on this forum or the one at homerecording.com that it's a good idea to space the panel away from the wall or ceiling the same distance as the panel is thick. <

Yes, and that's originally from my Acoustics FAQ:

www.ethanwiner.com/acoustics.html

Click Optimizing the Air Gap in the Table of Contents to jump to that section.

--Ethan

dnafe · Post by **dnafe** » Wed Nov 02, 2005 6:51 am

That's what I was looking for, just couldn't remember where I saw it.

Thanks Ethan

Don