All of the following names would come with the variation "Duo" for the 2.0 system and "Trio" for the 2.1 system.

Axiom Minuet System
-- Minuet is a musical term that hints at the mini form factor.

Axiom Prism System
-- Prism is an optical term that hints at the system's capability of presenting music without muddying the sound.

Axiom Sonic
-- I left of the "System" because that would make an unfortunate abbreviation. So this ont would be just the Sonic Duo and the Sonic Trio.