design question

[bodaddy]

Hi all. I have alot of 90 degree angles to deal with.(ceiling to wall,wall to wall,etc.) I am asking if it would be a problem to get rid of the angles with sheetrock and then use absorption an the walls? or do I need to use the absorption material in the angles?(like bass traps or 703).Thanks

[NL5]

I would use the 703 in the corners. If you can make your walls non-parallel, then I would use the sheetrock for that. I'm no expert though - I am sure someone will chime in.

Or, go to John Sayers forum and ask......

[pandamonk]

You can make membrane bass absorbers, but I'd stick to broadband fiberglass absorbers.

[Dani Pace]

I tried 45 degree angles on my celing/wall corners, BIG MISTAKE! It made my room more reflective (sounded like we were recording in a barrel) so I had to tear it all back out. I was advised not to do it but I had to learn the hard way. Bass traps and absorbtion panels are the way to go.

[bodaddy]

Thanks, I think I'll go with the absorption option. lol

[pandamonk]

Originally Posted by bodaddy

Thanks, I think I'll go with the absorption option. lol

Both absorb, only membrane absorbers just absorb bass, at certain frequencies, tuned with a few methods, whereas broadband(foam/rigid fiberglass) panels absorb all frequencies, depending on depth(4" will absorb well down to around 850Hz, then start to tail off, but 8", or 4" with 4" space behind, down to 425Hz then tail off).

To measure how far it'll absorb well to, divide the speed of sound, 340ish metres per second, by the thickness 0.1m(4") and this gives you 3400, which is divided by 4(1/4 wavelength), to give the deepest absorption. It does absorb below, but this is the lowest it can fully absorb, theoretically(to my knowledge).

Sorry for going off at a tangent

[Innovations]

If you have an odd shaped room with lots of corners then look for the longest diagonal measurement, treat one end of that, and then move up top the next.

It isn't the corner that is tha culprit, it is the long column of ari betewen one corner and the opposite corner.