Ron, a final word not to coerce but rather amplify and complete my own previous comments. Consider the frequency and dynamic range of the instruments prevalent in the types of music that you listen to and apply qualitative criteria: articulation\diction, definition\clarity, naturalness\palpability. Personally, a -6db at 44 Hz in SPL is not a compromise, given the quality of the upper sub-bass ( sub-bass being up to 60 Hz ). Take the standard 4-string double bass and its lowest open string. How often do we hear an open E1 string at 41 Hz! SPLs are merely levels of loudness. Timbral integrity, is for me, far more important.
Listen critically, for example, to Ray Brown's bass ( plucked or bowed ) and compare the articulation and diction of this bass on CLXs with the diffused, cavernous, amorphous bass often rendered by many other speakers ( sub-woofer assisted or not ). It was only last week that I witnessed a presentation of a horn-loaded system with an 18" woofer PLUS a sub-woofer. It was, I must confess, the perfect megaphonic STAGE speaker system!
Within the context of a typical room geometry ( appropriate speaker placement from front wall and first reflection points, seating position, proximity of boundaries to speakers and seating position, room modes, comb filtering and so on ), further complications should be avoided by desiring increased sub-bass SPLs. As much as I love sounds, I really don't want thunder and seismic eruptions in my 53 square meter room!
Finally, it all depends on one's personal judgement, definition, priorities and appreciation of what good and proper bass is. I do not find the CLXs a compromise at all.Most of the bass below 60 Hz is more than covered by them.
Cheers, Kostas Papazoglou.