building own acoustic treatment - Owens corning 703 board?

[trock]

so i came across a guy who suggested i can make my own acoustic treatmnets for my small home studio that resides in a crappy room for acoustics?

he suggested using Owens corning 703 board on cheap mic stands?

when i went to OC site there was no 703 board,

can anyone tell me what i should use and how this is doen??

do you need to put some sort of felt or something on the board also? or paing it? i am sure a pink board would like rather ridiculous?

any help would be great

thanks

oh need about 4 2x4 sheets to surround myself with acoustic guitar mic'ing and to build a small booth for when cutting vocals

[oudplayer]

Originally Posted by trock

so i came across a guy who suggested i can make my own acoustic treatmnets for my small home studio that resides in a crappy room for acoustics?

he suggested using Owens corning 703 board on cheap mic stands?

when i went to OC site there was no 703 board,

can anyone tell me what i should use and how this is doen??

do you need to put some sort of felt or something on the board also? or paing it? i am sure a pink board would like rather ridiculous?

any help would be great

thanks

oh need about 4 2x4 sheets to surround myself with acoustic guitar mic'ing and to build a small booth for when cutting vocals

Search around here....
http://www.johnlsayers.com/phpBB2/viewforum.php?f=6

and in the other forums on John Sayers site. They talk alot about 703, 705, and its equivalents: Rockwool, etc.

Yoou DEFINITELY need a cover on it. It's a very noxious fiberglass that makes you feel, if you breathe its shards, that you've smoked about 900 packs of unfiltered cigarettes while at the peak of bronchitis.

BUt that said, great acoustic properties for certain purposes.

[trock]

HAHA

wow, i didn't realize it could kill you

thats good info though

thanks for the link!

this might be an interest DIY project for me

thanks again!

One suggestion I would make is treat the room.

Do not build gobos.

1. If the room is small they will be in your way most of the time.
2. Unless built well they will fall apart quickly.
3. You can't really learn the room if it isn't static to some degree.


I live in Dallas and can't find this stuff locally. You will most likely need to order it.



Best of luck!!!!


D

[tommyd]

I'm making some panels for my room as we speak. 2x4 2" oc703 wrapped with fabric to attach at point of first reflection, ceiling,etc. There's a company called SPI that carries this stuff, and the happen to have a service center in Dallas Dpasch! Here's the link for anyone interested, maybe I'll post some shots of my panels after I get my method down.
TommyD
http://www.spi-co.com/servicecenterdirectory.mv

[tINY]

Originally Posted by trock

when i went to OC site there was no 703 board,

http://www.owenscorning.com/comminsu...ct=1&system=83


-tINY

[xaos]

You definitely need a fabric covering. Some people use burlap, but I would suggest a flame ******ant fabric such as Guilford of Maine (a popular choice). I went with the soundsuede product, but it is pricey. 3m makes a spray adesive that does the trick. The idea behind the fabric is to make sure the weave is dense enough to keep the fibers from escaping into the air, yet loose knit enough to allow the broadest range of frequencies to passinto the 703. Or so I have read. Science ain't my forte.

[tINY]

I have had good luck using this stuff for absorbtive panels. Make a frame with 1x3, staple cheap, colored burlap around the front. Then press the 3.5' thick stuff into the frame and staple a couple of braces across the back...


http://www.bondedlogic.com/ultratouch.htm



-tINY

[Ziggy!!]

Originally Posted by trock

HAHA

wow, i didn't realize it could kill you

thats good info though

thanks for the link!

this might be an interest DIY project for me

thanks again!

Most fiberglass insulation has actually be declared safe in terms of cancer, or causing death... it can cause great irriation to your eyes, skin and lungs though so by an aspestos (sp?) suit, a dust mask, goggles or glasses and some glovers when you are about to handle the stuff in a major way.

Before covering it in cloth. give it a good spray with Hair Spray. This will help reduce the amount of airborne particles...


The general rule of thumb when choicing cloth to cover them is to breath through it. If you can breath normally its good to go! Sound can travel easily through it.

[Ali]

Try ROXUL, it is cheaper and does the same thing as OC 703.

[xaos]

Roxul or Thermafiber (Rockwool in general) is actually better for absorption, but is relatively limp. The 703/705 is desirable for its rigidity. I put rockwool in my walls and bass traps and am making wall mounted absorbers with the 703.

[RKrizman]

BTW, if you don't feel like messing with it you might check out Modular Acoustics (google it). 80 bucks or so apiece for 2 x 4 traps. I just got 8 of them--they look great and so far they seem to be incredibly effective--much more so than 4" sonex, which is what I've been using. Nick, the guy who makes them, is great to deal with and will find whatever fabric and color you want.

-R

[RKrizman]

Here's the link:


http://www.modularacoustics.com/index.html

-R

[trock]

Hey thanks for all the advice and info here

i am checking into alot of this.

no matter what my room will be much much better soon

thansk again!

[cc1]

"703 board" "705 board" and "6-7 PCF fiberglass board (707)"

[tINY]

Originally Posted by cc1

What's the diff' 'tween "703 board" "705 board" and "6-7 PCF fiberglass board (707)"

Density


-tINY

[u b k]

Originally Posted by RKrizman

80 bucks or so apiece for 2 x 4 traps.

THAT aroused my interest, but when i went to the site the price is $120 each.

looks like i'll be finishing construction on my diy's after all!


gregoire
del ubik

[caseyLA]

Those look just like mine, except mine are two 2" panels in MDF frames.

MDF is usually cheaper that select pine and you can paint it any color. I don't like the look of natural pine.

I made mine for about $50 each.

http://www.geocities.com/thatwascasey/

[Crushed]

The 705 is more rigid and more dense than 703. I had to purchase mine from an industrial HVAC supplier that sold to the general public. I bought a case (12 2'x4' panels), and it cost me 120 us dollars. I then bought some nice greyish cloth I could breathe thru, and had my wife sew up the three sides. I slipped the 705 in the unsewn side, and folded in over a few times. I then placed 1/4 inch eye rivets into this last long side. I can now hang these things with eyehooks wherever I want. I can place them on stands for drum work. I placed some in the corner/wall joints behind the mix position, above the mix position, and to treat first-order reflections off the side of the mix position. Good stuff all the way around, and very cheap.

[chap]

It's pretty easy to find. Chris Huston helped me with my room.
He designed a grid of dense fiberboard that was cut to 4x4 sections
or 2x4. We went to a discount fabric joint together (I know what they were thinking).

His system is to 'kill' the room and bring it back to life in a desireable way i.e.
round reflectors and bass traps. It works.
I just did an acoustic treatment at a pre school gymnasium.
It was a big, hard surfaced cube and the teachers were getting migraines.
We made a bunch of panels (some were 8x4) all were 2" thick.
If you hang them about 2 inches out, they double their absortion.
The room sounds great now.
chap

[Insulation Man]

703 board is just one of Owens Corning's Commercial Fiberglass Board Products. If you search Owens Corning's website, you have to look up 700 series board.

701 = 1.5lb density
703 = 3lb density
705 = 6lb density

703 is most common for acoustics, 705 is great for high traffic areas (lower parts of studio walls) anywhere the board may be leaned on or need compressive strength.

Other manufacturers also sell the same stuff:

Knauf Insulation - Johns Manville - Certainteed, its all the same as long as the thickness and density is similar.

Knauf makes awesome product called ECOSE. This stuff has no harmful chemicals in the fiberglass binder.

[chap]

good info!