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Most batt materials are going to have too little gasflow resistance to be very efficient absorbers at low frequencies.. you can offset that fact to some degree with large installations [like laying batts all the way across the top of an acoustic tile drop ceiling], making the batt layer very thick, ...

I'd do just as Ethan suggests... no doubt laying batts above the existing tiles is going to be the most cost effective way to use what you have. This will yield an enormous number of Sabins [absorption] if you can do the entire ceiling. If you can find them at a reasonable price the high density R-3...

Auralex or Ready Acoustics? Neither. The tests were conducted by a consortium of interests for the benefit of the DIY acoustic and recording community. I instigated the concept of the project, and set the design parameters for the StudioTips Corner Absorber and the StudioTips SuperChunk. In addition...

>I would agree with you but do you have testing for below 100hz? snip... Glenn: Yes.. i have seen such data.. for example, we tested the 703 StudioTips Corner Absorber against the 705 based Mini-Trap at RAL down to 63 Hz. The 705 device exhibited no superiority to the 703 device. But more to the po...

Ethan: I know you like to morph any discussion of small room acoustics into an emotional event whenever your imaginative claims are confronted with science, but you are on your own. I'm not interested in that sort of silliness. You and I both know that when 703 and 705 are tested side by side in an ...

Also, if you download this doc:

STC_MTC_OITC_RW.doc

from here:

http://forum.studiotips.com/viewforum.php?f=27

It will help explain single number ratings.

When we were developing the StudioTips SuperChunk, we discovered that 705 is in fact not a better low frequency absorber than 703... in fact the actual lab tests on the matter show that the opposite is true. At StudioTips we did a series of tests on several foam and mineral fiber bass traps and foun...

Results from our absorption testing at the RAL of corner mounted RT424 broadband bass traps has been posted here: http://readyacoustics.com/acoustic-data.php Besides the most obvious reasons for interest, those planning a DIY upholstered mineral fiber panel bass trap build liken to the StudioTips Co...

2" mineral fiber panels are going to be unable to work lwo in the band. To address low frequency resonances you need to get that up to at least 4" thick panels, ans these should be mounted with +/- 4" of gap behind the panels. Here is a collection of absorption coefficients for many materials. Note ...

You're Welcome.. but remember.. post pics, or it didn't happen... this is the internet after all.

Here is a cheap and effective bass trap If you have modest carpentry and upholstery skills, these are the the cat's pajamas. If not, our firm sells zip up bags that allow you to use your "make your bed" skills to achieve results as good or better as building your own. :lol: http://forum.studiotips.c...

Here is a link to an affordable and effective design for a cloud. http://www.recording.org/ftopict-26889.html To place such a device - use the "mirror trick". The ?mirror trick? involves one person at the mix position looking at a mirror held flat to surfaces at the front of the room ? if the mix pe...