Withnail, I am seeing the same behaviour as you, subwoofer can barely be heard even when in the boot. (I have B&O without Navi). The front speakers are doing all the work and to compensate I normally fade it 2 or 3 clicks to the rear. Overall the sound is OK, but not nearly as good as I was expecting.Loc is right, the fact that the much cheaper 'Audi Sound System' gets a subwoofer dial (seperate from Bass) and the B&O gets nothing, is why I am annoyed..
I feel generally my B&O system struggles to deliver Bass.
My door speakers seem to be doing most of the work (then at higher volumes start vibrating - natch), whereas my subwoofer never seems to be make much effort.
I've played back a Bass heavy track, and almost climbed into the boot/trunk to hear and feel the subwoofer. Although the subwoofer is on, it is certainly not 'carrying' the low end Bass for the system, nor is it displacing much air. (I could only feel some vibration, not the 'puff' effect you would expect.
It wouldn't matter so much if these things were tuneable via the DSP.
But that's another bag of worms.
Three different settings!? How long were B&O working on this? Half a morning with a couple of long tea-breaks inbetween?
To say I'm feeling short changed from this system would be an understatement