David, that Worden speaker fascinates me. From the pictures I have seen it would seem that there are 2 drivers, one horizontal and one vertical. Or are they 2 different designs.
I like eccentricity and original thinking, but having the speaker pointing backwards seems crazy. Certainly I can hear a lack of low treble frequencies.
Have you tried it with a normal orientation, perhaps with a large phase plug.
Having said that, I do like the sound from it.