Have laa? seen so many over the past month while doing my research on Youtube & Google
ATC SCM45, Neumann KH310, ?.
But hoh?these are still traditional MT speakers! The tweeter is still on top of mid, it?s just that the woofer is put to the side.
For example, the ATC SCM50 Pro models got big hole cutout to move the tweeter for landscape installation.
Actually I should ask u?your Tannoy with coaxial drivers?the woofer is in the middle?yes?
When you listen critically to songs with good bass & kick drums? do u hear the bass & kick drums come from the middle or lower soundstage/floor?
(I cannot remember the sonic impression from my visit long ago)
Then again, maybe your supertweeter lifts the highs?