Ok, I know that there are many ways to do this, but here's the deal:

I was just about to put in an order for a bunch of "703 knockoff" insulation
(2in, 1.5lb/sqft density) for constructing the sound panels, but at the 11th
hour a friend told me I could use R-19, as long as I use a fabric such as
muslin to contain the fibers...he insisted it would keep them in (even if
panels are moved around) but I wanted to get a second opinion from anyone
out there who might have tried this. My plan is to build 2x4 frames and
stuff the R-19 inside and cover with muslin. The panels will be 2' x 4' and
moveable. The last thing I want is a bunch of micro fibers everywhere, so I
thought I'd pose the question out there first before trying it.

Thank you,

Brian

"Brian Standefer" wrote in message
...
Ok, I know that there are many ways to do this, but here's the deal:

I was just about to put in an order for a bunch of "703 knockoff"
insulation (2in, 1.5lb/sqft density) for constructing the sound panels,
but at the 11th hour a friend told me I could use R-19, as long as I use a
fabric such as muslin to contain the fibers...he insisted it would keep
them in (even if panels are moved around) but I wanted to get a second
opinion from anyone out there who might have tried this. My plan is to
build 2x4 frames and stuff the R-19 inside and cover with muslin. The
panels will be 2' x 4' and moveable. The last thing I want is a bunch of
micro fibers everywhere, so I thought I'd pose the question out there
first before trying it.

Thank you,

Brian


Hi Brian,,

What size room are you treating and is 4" as thick as you are going? Are you
using any bass trapping?

I would use 1x6 pine and 703. Even in this case you need a fabric to cover
it up. The R-19 you speak of might work fine but I just wonder if 4" is
enough, depending of course upon what other trapping you are doing in the
room.

Just a thought.

" What size room are you treating and is 4" as thick as you are going? Are
you
using any bass trapping?

The cutting room is 22' by 26' with 12.5' ceilings. It has a couple of iso
booths and lots of angles. My plan was to use the 2x4 frames with the R-19
as moveable wall panels to adjust the room sound, knowing full well it only
absorbs above 400Hz or so...simply something to control the cavernous reverb
off all the hard surfaces. As far as bass trapping, I intend to build
separate units for that...much thicker, and pretty much stationary in the
corners. My main concern was the fiber "dust" that is so prevalent with
batting. I was told muslin would contain this...but I can't help
wonder...if this works so well, why are people spending the extra dough for
the 703?

Brian

In article ,
"Brian Standefer" wrote:

Ok, I know that there are many ways to do this, but here's the deal:

I was just about to put in an order for a bunch of "703 knockoff" insulation
(2in, 1.5lb/sqft density) for constructing the sound panels, but at the 11th
hour a friend told me I could use R-19, as long as I use a fabric such as
muslin to contain the fibers...he insisted it would keep them in (even if
panels are moved around) but I wanted to get a second opinion from anyone
out there who might have tried this. My plan is to build 2x4 frames and
stuff the R-19 inside and cover with muslin. The panels will be 2' x 4' and
moveable. The last thing I want is a bunch of micro fibers everywhere, so I
thought I'd pose the question out there first before trying it.

Thank you,

Brian

I used cotton for my panels, 5.5" thick in frames covered in muslin.
Worked great and is a lot cheaper than fiberglass. There is some dust
when working with the material, but no itching. The cotton is from blue
jean factories!

Edwin

"Edwin Hurwitz" wrote in message
...
In article ,
"Brian Standefer" wrote:

Ok, I know that there are many ways to do this, but here's the deal:

I was just about to put in an order for a bunch of "703 knockoff"
insulation
(2in, 1.5lb/sqft density) for constructing the sound panels, but at the
11th
hour a friend told me I could use R-19, as long as I use a fabric such as
muslin to contain the fibers...he insisted it would keep them in (even if
panels are moved around) but I wanted to get a second opinion from anyone
out there who might have tried this. My plan is to build 2x4 frames and
stuff the R-19 inside and cover with muslin. The panels will be 2' x 4'
and
moveable. The last thing I want is a bunch of micro fibers everywhere,
so I
thought I'd pose the question out there first before trying it.

Thank you,

Brian

Hi Brian and all,,

I don't know the fabric you speak of well enough to say if it's safe or not.
I'll bet it is though. I would have to hold it and feel it and make a
judgement.

I know {or believe} 703 is packed tighter. Is cost your main concern?

Hey, that's a very nice sized space you have there. The big traps in the
corners will work great.

Are you tuning any of them? {helmholtz}? or big full corner, like Broad
band, and all the way down type panells?

I too am looking at what to use for my very small mix room at home {I've
done big spaces too} considering the small size here, the foam products look
apealing for around 300 and up but, bass trapping will be hard in such a
small place {14'x20ish'}

Best of luck, sounds like fun...............

I was just about to put in an order for a bunch of "703 knockoff"
insulation
(2in, 1.5lb/sqft density) for constructing the sound panels, but at the
11th
hour a friend told me I could use R-19, as long as I use a fabric such
as
muslin to contain the fibers...he insisted it would keep them in (even
if
panels are moved around) but I wanted to get a second opinion from
anyone
out there who might have tried this. My plan is to build 2x4 frames
and
stuff the R-19 inside and cover with muslin. The panels will be 2' x
4' and
moveable. The last thing I want is a bunch of micro fibers everywhere,
so I
thought I'd pose the question out there first before trying it.

The benefit to 703 is that it is considerably denser & more efficient
at lower frequencies than R19. You'd have a lot of compressing to do
with R19 & 703 is essentially already compressed to fit a thinner
profile. For sure 703 is a whole lot less unpleasant to work with.

Scott Fraser

Are you tuning any of them? {helmholtz}? or big full corner, like Broad
band, and all the way down type panells?

I planned on going as bulky as possible for the corners, the panel forming a
triangle with the corner...it will be pretty good...Ever use those cylinders
for trapping? A possibility, but I'm over budget on this studio to begin
with so constructing things ourselves is the order of the day.

I too am looking at what to use for my very small mix room at home {I've
done big spaces too} considering the small size here, the foam products
look apealing for around 300 and up but, bass trapping will be hard in
such a small place {14'x20ish'}

Might be...a sound diffusion panel worked great for me in a small room I was
in...it was much smaller than the room you describe. Foam might be your
answer, or a combination of things. I was considering making a diffuser for
the back wall of the control room out of 2x2's and an OSB backing...if I cut
different lengths of the 2x2 and randomly pack them together, pointing out
of the backing like the "skyline" types we've all seen. Might work pretty
well...and weigh a hundred pounds.

Best of luck, sounds like fun...............

Thanks, it's been a long journey through the construction process...I
learned a lot. And never want to contract anything else myself ever again.
If someone wanted to make a lot of money, they'd start a general contracting
business composed only of subs that call you back, show up on time, and
insist on a quality job!

Best of luck with your new space...

Brian