How do these speakers sound at "low levels"?
As the late HP over at TAS used to write... devices with low static resistance can get up and move and stop without having to stop.... it's related to static friction, which is much lower than dynamic friction.
Lately I've been playing with very low power amplifiers with very little distortion, low power (under 20wpc) and an extremely low noise floor. The end result is that you can hear the music and the soundstage at much lower levels than we're used to. This is a hard thing to do, but if you think about it, if you lower the noise floor by 20 db, then you don't need to crank it to 110db, because 90 db is all you will need. And, yes, you will have bass at 90db as well, without need of a subwoofer.
So, how do these speakers sound at 90 db with an amp that has a very low noise floor? I have noticed the 93 db efficiency, so this speaker seems to be a widebander with a supertweeter.