@hilde45 I mean “B”.
Maybe more manufactures are using it now on the high end, but at the lower end “cheap sells easier than good does”… and a lot buzz like it is a speaker built by a bee keeper.
DSP in active speakers. Drop a Dutch and Dutch 8c in a lousy room and get good sound. Genelec W371A with the Ones and you have directivity control down to something like 50hz, really amazing speakers.
Some great examples ^there^.
The other (related) item is room correction for passive speakers.
There are many DSP solutions (some automatic), and at least 1 analogue multi band 20 to ~200 Hz solution.
So the OP needs to likely narrow down things a bit.

