I think I've been barking up the wrong tree here. These speakers deserve more than a new letter or two. After having seen the latest picture, I think the new line introduces an entirely new, um... paradigm... in speaker design. Something this innovative needs a name that captures the imagination and demands attention.

Here are my official entries (until further notice!):

Axiom Essence Series: (E2, E3, E22, E100, E150)
Essence, used in its culinary sense, is a reduction of a substance to a very concentrated and potent form while maintaining the distinct characteristics of the original.
"Axiom Essence: All of the sound, none of the footprint."

Axiom Aura Series: (A2, A3, A22, A100, A150)
Aura = ambiance, air, atmosphere, mood, feeling, tone, emanation. These speakers don't call attention to themselves but are nonetheless unmistakeably present.
"Axiom Aura: Rediscover your music, and your floorspace."

Axiom Harmony Series: (H2, H3, H22, H100, H150)
I like how it works on many levels. Harmony obviously reminds us of music, but it also alludes to the high WAF/SAF of these speakers. It can also suggest that you no longer need to arrange your room arround your speakers. They can co-exist harmoniously with your existing arrangement.
"Axiom Harmony: Guiltness sonic indulgence."


And a catch-all slogan for this new series:

"Our new ??? Series hybrid in/on wall speakers will floor you."