What if you made it an inverted T and put the woofers in a separate horizontal cabinet along the bottom?
I would think that having some kind of separate stackable or interlocking cabinets might indeed be a good option. Especially if each cabinet could be ordered in horizontal or vertical configuration. I also like the earlier suggestion of a short but wide 'fatboy' LFR. I guess that would likely require the drivers to be arranged 2 by 2 beside each other with extra space or ports by the third woofer. I suppose a modification to this for a horizontal arrangement would be to have a row of woofers above or below a row of the other drivers.
Now we just need Ian and Andrew to figure out if any of these options is feasible to build and produces good sound!
