L
larrye
New member
I just recently posted some pic of my finished control-tracking room. Now it's time to treat it. I have a low ceiling over my studio table (6'9") that John said to treat first. He didn't say specifically how though. But from his site and other threads I think I should use rigid Knauf fiber glass board. I have found a supplier but the thickest they stock is only stock 2" and they don't have it plain. They have it faced in a 3lb/cubic foot ASJ . This is faced in some kind of white material. The other side is plain.
The weird thing is the specs. for this board. They look totally different from those at John's site. I think this is due to the facing material, because the plain specs. are the same. Here are the specs for sound absorption I got from .
at 125Hz = .75 @250Hz = .71 @500Hz = .80 @1000Hz =.66
@4000 Hz = .65 and the NRC = .65
Now I know the SAC should be lower at the lower freq. and they are for the plain untreated 2", so it has to be the facing, right?
I would like to purchase this tomorrow night, but I afraid that it won't work right. I think I like these specs. though.
Questions
1. Would this board be good for treating my ceiling?
2. Should I install it with the facing out, which I think
would yield the above specs.
3. Install with the facing in yielding reversed SAC's
Thanks,
Larry
The weird thing is the specs. for this board. They look totally different from those at John's site. I think this is due to the facing material, because the plain specs. are the same. Here are the specs for sound absorption I got from .
at 125Hz = .75 @250Hz = .71 @500Hz = .80 @1000Hz =.66
@4000 Hz = .65 and the NRC = .65
Now I know the SAC should be lower at the lower freq. and they are for the plain untreated 2", so it has to be the facing, right?
I would like to purchase this tomorrow night, but I afraid that it won't work right. I think I like these specs. though.
Questions
1. Would this board be good for treating my ceiling?
2. Should I install it with the facing out, which I think
would yield the above specs.
3. Install with the facing in yielding reversed SAC's
Thanks,
Larry