Most modern box speakers use reflex loading to handle the bass region. The most obvious "violent" cone movement occurs at the port tuning frequency, where the box acoustically vanishes and the woofer is completely unloaded.
There is no substitute for cubic inch or in this case surface area
After listening to quite a few speakers, my conclusion is that if you want large enveloping soundstage, you need a lot of drivers.
I once had a speaker with two 12in. drivers and the soundstage is just floating in the air. None of my other speakers could do that.
Currently I have a pair of Thiel CS2.4. It is a very good speaker but with small drivers there is really limitation to what it can do in term of soundstage size. I really miss that.