I like it. I see the association with cone-type loudspeakers and
axes, but the others I'm not so sure of. But that doesn't matter:
what's important is that it's simple, distinct from the others, and
does invoke /some/ images that make it easy to remember. I like this
one better than any of mine. Here's another association it had in
my mind that might be interesting: the fact that the "axe head"
was imbedded in a thin ring brought to my mind the Nazi Fasces.
Perhaps a double ring would emphasize that?
-- Lee Daniel Crocker <lee@piclab.com> <http://www.piclab.com/lcrocker.html> "All inventions or works of authorship original to me, herein and past, are placed irrevocably in the public domain, and may be used or modified for any purpose, without permission, attribution, or notification."--LDC