VO-BB - 20 YEARS OLD!

Rob Ellis · M&M Joined: 01 Aug 2006 Posts: 2385 Location: Detroit

I have several of the ATS pre-fab panels, and they have made quite a difference in the sound quality of my audio...BUT it is not that hard to
buy the fiberglass and burlap material and do it yourself either.

I started with several of the pre-fabs, and then filled the "holes" with DIY panels. They both work great!

And for my booth, work hugely better than acoustic foam.

JSantucci · Posted: Mon Jul 12, 2010 5:54 pm Post subject:

Mike Sommer · Posted: Tue Jul 13, 2010 2:03 am Post subject:

bobsouer · Posted: Tue Jul 13, 2010 3:56 am Post subject:

Mmmm. I love mustard.
_________________
Be well,
Bob Souer (just think of lemons)
The second nicest guy in voiceover.
+1-724-613-2749
Source Connect, phone patch, pony express

JSantucci · Posted: Tue Jul 13, 2010 10:13 am Post subject:

Thanks.
_________________
Teacher, Voice Actor, Balloon Twister, Tuvan Throat Singer (I know... weird, right?)

SilverSurfer3001 · Posted: Wed Jul 14, 2010 8:24 am Post subject:

Mr Sommer, this may be a stupid question (but I've never been accused of my brilliance Wink

):

I have access to a few leftover packages of porous acoustic ceiling tile (24x48x.625 with an NRC of .71) if I laminated three pieces together, and wrap them in burlap, attach them to 1x4 cleats on the wall, could I get similar results to the 2inch rigid?

If so, if I took one of these panels and wedged them into the corners, could I not expect similar results to the superchunk?
_________________
Jody Silvers
VOSilvers.com

Mike Sommer · Posted: Wed Jul 14, 2010 9:36 am Post subject:

"There is no such thing as a stupid question. A stupid question is a question never asked." Someone said this Not sure who.

Do you know the product name and number? I'll look into it for you.

From my experience I will say your product maybe ineffective in what we are trying to accomplish in room treatment. When it comes to ceiling tiles, they can provide some absorption, but generally these products are too dense. Foam can be a good option, but you need 6" to equal what 2" of rigid fiberglass insulation can do, foam is also very expensive, a fire hazard and breaks down over time.

It's also important to note that NRC is an average of sound absorption coefficients at specific frequencies. NRC does not truly represent how the material really performs.

Without getting to technical we are dealing with gas and the velocity of gas; how sound moves through Air, a gas. If a product is too dense and air can not pass through it, it becomes less efficient at specific frequencies. This is why OC 703 and 705 are perfect for what we do, each weigh 3 and 5 pounds per cubic feet respectively. 3 is the magic number for broadband absorption; 5 for low frequency absorption. So, like a sponge it needs to be porous; it also needs density.

So in the case of corner basstraps OC 705 is a better option, because it absorbs bass better, and because of its higher density reflects higher frequencies back into the room. Thusly absorbing the bass while not making the room overly dry in the high end.
_________________
The Blog:
http://voiceoveraudio.blogspot.com/

Acoustics are counter-intuitive. If one thing is certain about acoustics, it is that if anything seems obvious it is probably wrong.

SilverSurfer3001 · Posted: Wed Jul 14, 2010 9:43 am Post subject:

I'll get the product number and get back to you. Thanks!
_________________
Jody Silvers
VOSilvers.com

SilverSurfer3001 · Posted: Thu Jul 15, 2010 6:08 pm Post subject:

Just checked the stack, and not a product code to be found.... sorry.
_________________
Jody Silvers
VOSilvers.com

Mike Sommer · Posted: Thu Jul 15, 2010 6:25 pm Post subject:

Acoustic ceiling panel, as I stated above, is not what we are looking for. Rigid Fiberglass is. In the form of Owens Corning 703 or 705, OR John Manvill INSUL-Shield.
_________________
The Blog:
http://voiceoveraudio.blogspot.com/

Acoustics are counter-intuitive. If one thing is certain about acoustics, it is that if anything seems obvious it is probably wrong.

SilverSurfer3001 · Posted: Thu Jul 15, 2010 8:33 pm Post subject:

The search is on.
_________________
Jody Silvers
VOSilvers.com

Hestoft · Contributor Joined: 11 Jul 2010 Posts: 39

The ATS material comes in two flavors, rigid and soft. I have purchased and use both on my studio, but it seems to me that the rigid does not do as well in absorbing the really low bass frequencies that are causing me headaches, like traffic rumble transmitted through my concrete floor and foundation. It just seems that 4" of the soft material absorb better than 4" of the hard, kind of a bummer as I filled my outside wall with the rigid!

I purchased a couple of Bare Traps from RealTraps and they seem to help, especially with the very low frequencies (below 100hz), but I am still picking up some rumble even through two layers of Green-Glued drywall sandwiching 4" of ATS rigid insulation.

Do I need something on the floor besides vinyl tile and a layer of carpet to possibly dampen the rumble or should I just invest in more Bare Traps (I already have traps in three of the four corners of the room with shelves blocking the fourth)?

Ralf-Finn Hestoft
The NEW(ly contributing) Voice of Chicago

Mike Sommer · Posted: Mon Jul 19, 2010 8:51 pm Post subject: