Soundstage and explosive dynamics?

Kosst you say "at the cost of focussed dispersion".    I find it odd that you regard that as a negative. I myself and plenty of others that I know regard that as one of the positives of a horn. That way you get less unwanted room interactions.   Definitely not good for entertaining though as the sweet spot is small. Anyhow I understand  that you're saying you don't like horn's and I'm completely fine with that, to each their own. It's just when you're saying things that are blatantly false that I feel the need to set the record straight. 

For explosive dynamics you need a large speaker with the following specs:
1-dual 15" woofers, at the minimum.
2-at least a 2" compression driver for the highs
3-high efficiency ion less than 96 dB
4-all the above plus bi-amplification, with a bi-amplifie large system you have a good chance of reaching your goal of explosive dynamics.
I have one such system, it is JBL 4350, a four way bi-amplified monster.
I mainly listen to classical, these JBL's can do justice to uncompressed orchestral recording like no other speaker with a very transparent full range sound.

I can recommend tekton impact monitor and the new technics monitor reviewed by Herb Reichert.