OK. For this purpose (where power response is the main point)
the dodecahedral speakers would work fine.
Their difficulty for eg stereo use--that they bounce
sound all around the room and also have oddball lobing
effects would be irrelevant(or in the former instance useful)
It would not be too hard to dummy up such a speaker yourself.
If you cut out twelve regular pentagons and bevel their edges
at the correct angle , (dihedral angle of dodecahedron is 116.6
degrees) they will
fit together in a uniquely determined and very rigid structure
and then you just need to cut hole for the drivers and install
suitable drivers.
And you can put tweeters at the midpoints of the (twenty)
edges to get a uniform patter. Then you just need to
adjust the level of the woofer/mids relative to the tweeters
(there are more tweeters than woofers) and bingo, plus
add a subwoofer which will be omni automatically.
More than an afternoon but less than a week of construction time
I would guess.
Have fun!
Robert
On Fri, 19 Oct 2012, Paul Hodges wrote:
--On 19 October 2012 07:41 -0700 Robert Greene <gre...@math.ucla.edu>
wrote:
there is no real reason to want such a thing.
I have an electronic chamber organ; in order to excite the acoustic of
the hall or church where I am using it in a manner comparable with a
chamber organ with pipes I think such speakers would be of considerable
interest. Second to them would be any speakers whose polar pattern was
pretty much uniform with frequency.
Paul
--
Paul Hodges
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