Thank you Amir for this new test!
Excellent speakers resulting from a serious study using high-performance measurement tools put in the hands of leading engineers. Honestly remarkable. And an overall reasonable price compared to other passive speakers: as they say, they are well placed on the market for a passionate music lover who is looking for a faithful, elegant speaker that fits easily into their living room.
The bass "problem" at the slightly lower level is not a defect, it is even a quality because the room gain often wreaks havoc. And it will be enough to place this speaker very close to the rear wall so that it regains a little level or to correct it slightly after measurement.
And then, something that should be investigated. Browsing the Internet, I saw several cases of coaxial HP Kef with a broken membrane near the suspension... always on small bidirectional wireless libraries... Included in a three-way model and relieved of bass, this HP should escape this risk because its membrane will hardly move with the naked eye. (Not to mention that in Europe, Kef after-sales service doesn't really seem to listen to customers...)