On Thu, 30 Dec 2004 10:26:50 -0500, "Ethan Winer" ethanw at
ethanwiner dot com wrote:

RPG Modex bass traps are great, if expensive, but they're not appropriate
for this application. Modex traps are available tuned to different frequency
ranges, and those ranges are better suited for larger rooms. What you need
is broadband absorption that works well down to the lowest frequencies, not
just over a narrow range. snip

I've not attacked this particular problem personally, but what
experience I do have with tiny environments would bear this out. When
you use tuned "traps" to suck up acoustic energy, it's somewhat of a
rule of thumb that as the enclosured space (room) gets smaller, the Q
of these devices rises seemingly exponentially. Thus, instead of the
relatively broadband trap it would be in a largish room, it becomes a
very sharp trap in a small room, thus giving you a "comb filter"
effect, which can be VERY nasty.

i could almost see myself raising up the guitar cabinet and then
"surrounding" the perimeter of the guitar cab with these modex things. snip

Hmmm...thus making the tiny room "look" bigger aurally? Not a bad
idea, really.

Modex traps are meant to be stacked in corners, not placed out in the room.
If you get EQ magazine, the current (January) issue has a review of my
company's MiniTraps. The reviewer specifically mentioned how successful
MiniTraps are for exactly what you describe. snip

Smaller trap for smaller room...form follows function. Works for me
as a "guestimate," I'd gather!

dB