Mark & Mary Ann Weiss wrote:

I've been thinking about a variety of loudspeaker designs, one of which was
similar to the Parthenon. I made some sketches 5-6 years ago, but never
persued it. I turned the skiver/surround 90º with respect to conventional
surrounds, and made it like an accordian hose, at the cone diameter. That
allows for lots of movement. The challenge was controlling lateral movement.

Well your other option is to look at entirely different motor designs
than the standard voice-coil-piston design. Someone else mentioned
ServoDrive. Several years ago Phoenix Gold licensed and adapted some of
their concepts for car audio as well.

For something REALLY different, check out their "rotary" driver design -
some good info from Tom Danley himself can be found he
http://www.diyaudio.com/forums/showthread/t-55122.html


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