Extension is only part of the sound and you don't need a lot of extension to listen to acoustic bass or bass guitar (lowest note 41.2Hz). My current speakers, with larger woofers, have worse (by 5Hz) extension than previous speakers but bass sounds much better. It is not extension or dynamics, but just sound of the bass (both bass reflex). Attack and decay of the note sounds right (natural). I also suspect that distortion is lower (woofers without spider-web suspension, larger volume).
Previous speakers had 2 1/2 way xover meaning that one woofer covers bass and midrange while the other supports low bass. That way it is possible to stretch extension from small woofers in smaller cabinets but it won't sound as good as larger woofer.
Most of the woofers have overhung motor construction that produces more distortions while only few manufacturers (Including Acoustic Zen) use underhung motor, perhaps because it requires much larger magnets.
Previous speakers had 2 1/2 way xover meaning that one woofer covers bass and midrange while the other supports low bass. That way it is possible to stretch extension from small woofers in smaller cabinets but it won't sound as good as larger woofer.
Most of the woofers have overhung motor construction that produces more distortions while only few manufacturers (Including Acoustic Zen) use underhung motor, perhaps because it requires much larger magnets.