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Originally Posted by SK1 Pardon my ignorance on this ........
If I build 4" thick fabric covered 705 gizmos for the corners of my room are they broad band absorbers or bass traps ??
I'm trying to get a handle on this stuff. 
broad band right ??? |
Broad band is just a term for a bass trap that also picks up HF. As pointed out above picking up HF is pretty easy. It is the low end that is tough to absorb. I would recommend facing the 705 with FRK. It is going to act as a membrane which will pick up more of the low end. Make sure you straddle all corners of the room with the panel. After that you would want to build (or buy) 2 inch panels for the first reflections in the room. Those are the ones you do not want to use the FRK on.
Glenn