another possibility came to me this morning. not sure if it is a new idea or a recycled idea. doesn't matter. :-)
i'm not sure what to call it. 2.1? horn crossed wherever (1-2khz?), mid runs from horn cross all the way down. additional 3 drivers roll in for mid-bass.
the essence would be to use only one driver next to the horn as the midrange. this would minimize off axis cancellations that would occur from using two midranges located next to the horn.
then, to bring the sensitivity up and provide good impact, 3 additional drivers would all be crossed in somewhere below the cancellation point of the outermost two drivers (the point where the difference in distance from each driver to the listening spot is 1/2 wavelength).
of course with something like this, the off axis response to each side will be slightly different, but it may not be a deal killer.
the listening window will be much wider than if the mids to the sides of the horn are both used.
so, not an optimal design, but nothing is really optimal anyways. seems like it may be workable.
the big advantage is of course the vertical height is minimized and that seems to be what a lot of folks want.
it is also a symmetrical *appearing* design and it is undeniable that people prefer aesthetic symmetry.
i'm sure some of the other guys will weigh in.Edited by LTD02 - 1/14/14 at 11:26am