Its ideal to have a flat on axis response and a slopping off axis response of the same pattern. KEF‘s on axis is slopping, compared to other speakers. Yet when I tried listening to Reference (non meta version) it sounded very harsh, bright, despite the 6 db sinking in treble region. Now I am trying to undertand if Kef guys knew their tweeters are somehow too sharp and wanted people not to hear it, so they rolled off the on axis. Still some people call it neutral. that’s no way neutral with that roll off, normally we wont put a cloth over cymbals before we listen to them!. Is there a reason other than this to have a rolled off on axis response?