@coffee-jerk
those models weren't very efficient, which goes against what the OP said.
Looking for an old Stereophile review ...
There was a review in Stereophile 10-20 years ago about a slim tower speaker using pro audio drivers, very obscure company, presumably gone now. My recollection was the drivers were inexpensive, too, and the reviewer was very impressed overall. I think these were highly efficient, too. Anyone know which issue this was? Or the name of the speaker company and model?