Magico A5

[Delija]

By the in-room measurements shown in July edition of Stereophile, there is a pretty significant roll-off of high frequencies:
8 kHz = -5 dB
10 kHz = -7 dB
15 kHz = -10 dB
20 kHz = -14 dB

I'm curious how this affects the "air" and sense of ambience - for those who have heard them?

Also, even in pretty large room (32' x 24' x 9' 9") the bass seems to be too prominent - of course, it should not be flat and should gradually rise toward the lowest frequencies, but +10 dB at 100 Hz (+6 dB at 150 Hz) seems too much - and that is also addressed in review. What is the optimal room size for them?

And again - most of the sound description in review is related to bass