VO-BB - 20 YEARS OLD!

Lizden · Posted: Fri Oct 16, 2009 11:06 am Post subject:

Ok THAT...is cool!
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Raymond Hearn · Joined: 02 Sep 2009 Posts: 17 Location: Washington, DC

WOW! This post really took on a life of its own! I only just now realized there were 3 pages of conversation. What a wealth of information!

An update on my status: I found a simple acoustic panel design by Joel Dubay of readyacoustic.com (http://www.basstraps.net/DIY-BASS-TRAPS-MADE-EASY.pdf). I'm using this approach to build both the bass traps and the broadband absorber panels. So far I've been able to purchase the OC 703 from a local building supply company in Maryland, and assemble the frames according to Joel's design. Now it's time to buy the fabric and put it all together.

Speaking of fabric, here's a question: How important is it to use fabric that's been treated with a fire retardant chemical? WhisperRoom says the cloth lining on the booth's walls has not be so treated. They say their own tests confirm that the fabric smolders awhile before igniting so they don't think chemical treatments are necessary. So is it really critical that I cover my acoustic panels with chemically treated fabric?

BTW, I'm sure the DIY materials will save me money over buying similar completed acoustics commercially. Especially once you factor in shipping and handling. But on the flip side I will have spent a lot of time on this project by the time it's done. But on the flip-flip side I value the education I'm gaining in the DIY process, so I think it's worth the effort this go round. I'll probably place an order some where when it's time to outfit my next studio Smile

Regards,
Raymond

Mike Sommer · Posted: Fri Oct 16, 2009 1:21 pm Post subject:

Raymond Hearn · Joined: 02 Sep 2009 Posts: 17 Location: Washington, DC

Thanks for your thoughts Mike. A link to the Hobo Laughing

F I referenced above can be found on the first sentence of the first post on this page:

http://basstraps.net/index.php?topic=82.0

Clicking the word "here" on a Windows PC will open the Hobo Laughing

F (assuming you have Adobe Acrobat Reader installed.) But on my Mac OSX running Firefox doing so takes me to a blank browser page. So I have to ctrl-click on "here" and select "Save Link As" to download the Hobo Laughing

F to my desktop and open it from there.

As you'll see in the Hobo Laughing

F, the wood frame's outside measurements are 2' X 4'. That's because the wood is used as more of a support/foundation than frame. It's the thing the 703 sits on instead of in. The wood support is also the thing that the fabric and any hanging hardware is attached to. Supposedly leaving the 703 panel edges exposed is desirable because they can then absorb sound waves that hit the traps from the side. Plus, there's no concerns about the frame's appearance given that it's wrapped in fabric.

I'll give the flame retardancy some serious consideration. What about the home made borax/boric acid flame retardant solutions that have been mentioned a couple of times on this site?
Thanks a bunch

Mike Sommer · Posted: Sat Oct 17, 2009 12:05 am Post subject:

That interesting.
I like this method because I can get neater crisper looking edges.
http://www.gearslutz.com/board/bass-traps-acoustic-panels-foam-etc/87464-how-i-built-my-bass-traps.html

It's up to you on the flame retardant. You can do it yourself, I just look at minor stuff like this as a lot of extra time and work. IT the extra cost is that big of a deal then just go with burlap - it does come in a few colors.
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Acoustics are counter-intuitive. If one thing is certain about acoustics, it is that if anything seems obvious it is probably wrong.