Yeh I'm an electronica listener too. I find BeoLab 9s much more detailed than the BL2, which often seems very vague and slow with fast basslines. Phat Planet shows this up fantastically, it just becomes a big rumble on the BL2, wheras on the BL9s the tiniest details in the bassline come through well.

The frequens above 400hz you can change. Below the Adaptive Bass Control takes care of that!!

Generally yes, although it's not always perfect. I thought it was up to 300 Hz anyway?

Unfortunately not perfect if you have a room like mine! I think (and hope :-) ) the calibration will work if you have an "OK" room from the acustic point of view.

On Thursday I have an appointment with the acustic expert who know my room from a previous visit 3 years ago. We will decide what we can do and I expect that the room is in an better shape in 4 weeks.

Karsten