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Covering panels/foam with fabric......
Old 22nd December 2008
  #61
Lives for gear
 
matskull's Avatar
 

I continued my reaserches and found two product locally, at two different price.

Here's their specs.
(Sorry it doesn't come up like I'd like to but you probably can figure out how to read it)

Roxul Rockboard 60
Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC

1,0 po 0,08 0,33 0,78 1,03 1,02 1,04 0,80
2,0 po 0,32 0,81 1,06 1,02 0,99 1,04 0,95



Glasscell Isofab OFI 48
Type in. (mm) 125 250 500 1000 2000 4000 NRC
1" 0.15 0.71 0.70 0.89 0.65 0.39 0.75
2" 0.51 1.10 1.13 0.82 0.53 0.33 0.90


I can get the Glasscell Isofab for 0.73$ per square foot
and the Rockboard 60 for 1.65$ per square foot, both 2x4' and 2" thick.

So the rockboard is more than twice the price.

Glasscell Isofab OFI 48 is apparantly made from rigid fiber glass and it is covered with FSK.
Does it matter, can I remove it easily if it's better to???

Here is the link, search for OFI 48 (apparantly their replacement for OC703)
GlassCell Isofab Inc. - Thermal Insulation - Glass Fiber

Like I said I can get both locally but I need some pro opinions here.
Thanks
Old 22nd December 2008
  #62
Gear Guru
 
Glenn Kuras's Avatar
Quote:
Does it matter, can I remove it easily if it's better to???
You can remove it, but for bass trapping I would recommend keeping it on the piece that faces the room. It will act as a limp membrane which will absorb better below 100 hz. Also it will block some of the high end so the room does not go dead. For the early reflection points and general decay times don't us the facing.

Glenn
Old 22nd December 2008
  #63
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matskull's Avatar
 

Quote:
Originally Posted by Glenn Kuras View Post
You can remove it, but for bass trapping I would recommend keeping it on the piece that faces the room. It will act as a limp membrane which will absorb better below 100 hz. Also it will block some of the high end so the room does not go dead. For the early reflection points and general decay times don't us the facing.

Glenn
Nice, thanks a lot, so for early reflection point you would recommend me to completely remove the FSK or to put it on the side facing the wall?
Old 22nd December 2008
  #64
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matskull's Avatar
 

Also, I posted some pictures of my room in this thread, maybe you could tell if I should use the FSK at all?
thanks
Old 22nd December 2008
  #65
Gear Guru
 
Glenn Kuras's Avatar
Quote:
Originally Posted by matskull View Post
Nice, thanks a lot, so for early reflection point you would recommend me to completely remove the FSK or to put it on the side facing the wall?
Yes. Actually it is best to remove it all together and space the 2" panels off the wall 2" if possible.

As far as your pictures, yes I still would use the FRK on the bass traps.

Glenn
Old 22nd December 2008
  #66
Lives for gear
 
matskull's Avatar
 

Quote:
Originally Posted by Glenn Kuras View Post
Yes. Actually it is best to remove it all together and space the 2" panels off the wall 2" if possible.

As far as your pictures, yes I still would use the FRK on the bass traps.

Glenn
Thanks Glenn!
Old 13th April 2009
  #67
Gear Nut
 

Quote:
Originally Posted by Glenn Kuras View Post
Great point and totally agree.. Just make sure you don't use those panels in the early reflection points.

Glenn
Hey Glen... (or any other pro with an answer), what type of material WOULD you use to cover the panels at the first reflection points (side walls and ceiling)?
I read on GS forum that burlap was a good material to use, would this be for first reflection points, or other places like rear wall and corner traps? Or both?
Old 13th May 2009
  #68
JWL
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Any sort of cloth is fine for first-reflection points, provided the cloth isn't reflective. Very few cloths are reflective. Make sure you can blow through it easily.
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