I have a selfmade version with 2x 30cm KEF-Speaker compoundsystem and a Thomessen-Poweramplifer-Module.
One chassis is visible and mounted on the outside and the 2nd one acts inside opposite to the outside chassis.
It has the real power you need for lowfrequency playback :-)
We all know: B&O makes good speakers but you can't trick physics. Such small speakers can't have real bass power.
If you wish I can make a photo compared to the Beosound 6000.