At first I thought I was having deja vu, but we really have had this discussion before - see 'Magico A5 spinorama (CEA2034)'That's pretty good, other than the characteristic 10kHz drop-off.
Seems to be deliberate since it shows up in multiple products
In the frequency range above 7kHz, the radiation of a tweeter can be influenced very easily by the smallest waveguide or just by a small "step" in the tweeter front panel.
Source: German forum
Agree, with the A5 it looks like the downward slope above 10kHz has been implemented deliberately or to reduce crossover components.
You can find more details about how the smallest changes in the tweeter front panel affect the radiation in the previous thread.