carpeting vs acoustical foam??

Caiwyn said:
How good is Auralex foam, then? Does a good Auralex foam panel (say, the pyramid foam) compare to the rigid fiberglass panels from RealTraps? I'm curious because a MicroTrap from RealTraps costs about twice what a 2x4 pyramid foam panel (4" thick) from Auralex costs...

Realtraps are membrane absorbers, not fiberglass panels. 4" foam starts nosediving below 250Hz. The MicroTraps aren't really intended for low frequency absorption, either, which is usually what needs the most attention in project studios.
 
OK, here's a handy graph...

 
apl said:
Realtraps are membrane absorbers, not fiberglass panels. 4" foam starts nosediving below 250Hz. The MicroTraps aren't really intended for low frequency absorption, either, which is usually what needs the most attention in project studios.

Awesome graph, thanks! Looks like there's really no substitute for the Mondo/Mini Traps. But the auralex foam could be a very suitable replacement for the MicroTraps. Maybe I should go with the Mondo/Mini Traps for bass absorption and some Auralex foam for reflections?
 
I don't have a lot of time to build my own stuff, so I'm more interested in buying pre-made acoustic treatments. I'll stick with the Mini and Mondo Traps for now, and for the reflection points I'll go with either 4" Auralex or make my own panels out of 703 if it's not too hard.
 
Caiwyn said:
I don't have a lot of time to build my own stuff, so I'm more interested in buying pre-made acoustic treatments. I'll stick with the Mini and Mondo Traps for now, and for the reflection points I'll go with either 4" Auralex or make my own panels out of 703 if it's not too hard.

It was a lot easier than I expected.
 
Actually, these bags look to make it simple. Just add your own 2" slabs of 703... maybe I'll go this route.

On the other hand, foam can be cut to smaller pieces, and is likely more sturdy.
 
Caiwyn said:
Actually, these bags look to make it simple. Just add your own 2" slabs of 703... maybe I'll go this route.

On the other hand, foam can be cut to smaller pieces, and is likely more sturdy.

I got fabric 60" wide at Wal-Mart for a $1/yard, then wrapped the panels like Christmas presents, tacking the fabric down with hot glue. Five minutes a panel, tops.
 
The pins just catch the cloth on some of the panels and on others they're up against the edges.

 
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