Hi,
The tannoys, corner loaded are actually also "directional" at LF, though the "waveguide" is formed by the rooms walls.
But the tannoys are long gone, I am listening to my commercial products at home (I know, disgusting, innit), if a rather tweaked up variant desitned to become the "SE" version.
!!!
"Eccentric bass"
Never heard that one.
The Acrylic Dipoles are an excercise in "making do", They have many compromises. I do feel that what they do, they do well. The rest is down to setup and what you are used to. Once I got sufficiently exposed to "dipole bass" with friends I found even well equalised "classic" speakers wanting, plus my then girlfriend thought the Corner Yorks a little overbearing but absloutely adores the Dipoles (and I adore her)... ;-)
BTB, no doubt you are aware that any commercial relaeses are always years behind what "Le Artiste" is cooking up at a given tyme. The dipoles really represent a late 90's stand for the "state of the art" as I understand it and are an intermediate step, trying to "get as much of what I want from what I can get".
Ciao T