Drubin- Good point. Maybe that was a bit irresponsible on my part. Particularly about dynamic range. I had the Dynaudio predecessors home for a weekend audition (with 150W monoblocks) and their dynamic range was mind blowing. On big bass transients, seemed like the walls in my room were bowing out. They use a very large voice coil that can transfer a lot of power to a lot of energy. Very impressive. There is no way I was getting 30Hz in my room, however, in fact, I thought the Dynaudio's to be a bit light in tone in general. In the accurate school rather than the romantic school, if you know what I mean, and that's not meant as a criticism. To their credit, they sounded like one speaker, cut from the same cloth as is sometimes said, as much as any dynamic design I have heard.
It was an assumption on my part about dynamics and deep bass. My bad. I am guessing that the SP Tech mini's will go deeper because they have a larger cabinet size and slightly larger mid/bass drivers. And a friend tells me that they, too, have super power handling ability.
I'd love to hear both at home and have a lot of regard for the Dyn's. I already know the they will work superbly in my room.