Maybe you could be more specific about the sound qualities you ascribe to concentric drivers.
@tomcy6 For me: Coherent, natural sound with solid & sharp imaging, because the tweeter and mid/woofer covering the critical midrange crossover point act more like a single point source rather than a tweeter and woofer barking at you from different locations.
Yes, coherent is the word. I'd say it's a little bit like listening to a mono sound source like a single driver kitchen radio.
It's a less busy sound, more laid-back and one that's easier to follow, but one that still strangely seems to have plenty of detail.
As you said earlier, "Tannoys are not for everyone - you either "get them" or you don’t."