Sander,
> HOW BAD DO U THINK ARE AURALEX ROOMINATOR PACKAGES, OR THE PRIMACOUSTIC LONDON ETC COMPARED TO THESE REAL TRAPS?? IS THE DIFFRENCE HUGE??? <
I hope nobody minds me chiming in.
MiniTraps are much more effective than typical foam treatments like those you mentioned. They absorb more and to a lower frequency, which is the real issue. For general mid/high echo and ambience reduction almost any thin absorbing material is acceptable. Where MiniTraps shine is at the low end. This is the most important, yet difficult, range to control and absorb.
MiniTraps also have an intentional curve of absorption versus frequency. When corner mounted their absorption is greatest at the low end, then levels off above a few hundred Hz. This lets you put enough of them in the room to solve the bass problems, but without killing all the mids and highs as foam and plain fiberglass do.
--Ethan
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