You have to hear a well implemented compression driver to comment!
The Array 1400 are a very sophisticated speaker. Paired with a low distortion system upstream they are very musical and real sounding.
The dynamics are secondary to none.
I have had Array 1400s for a couple of years now and they do things right that very few other speakers are capable of doing.
These JBL speakers are underrated!
I agree with everything above. You can say the same for the rest of the JBL Synthesis line, really. And the stuff that will be unveiled in Jan. 2015 will be very nice-and well deserved-additions to the lineup.