erandlux wrote:

this configuration in my BO store, but there is quite no difference whith and without the beolab 11.

A couple months back someone reported terrible results in a store demo (I think it was Major in Japan, glad he is safe!)

Anyway, based on feedback from here he went to another store, got a totally difference experience and was sold (pun intended)

So either persuade the store to loan you a BL11 for a weekend, or find another store that understands how to configure the product

And as the other poster has replied, my wife was sold on the discernible and she normally only humours my B&O obsession 

The early store dem kits for Lab 11 with Lab4000 didn't work properly. I remember playing spot the difference - nigh on impossible, but then replaced the switcher unit, and now the lab 11 really adds to the 4000s!

I use the Beolab 11 with BL-3 but tried them out at home first. A thing you, as mentioned above, must do to gain a good understanding whether the BL-11 will benefit your setup & room.

After listening to a lot of different music, several movies, I was sold. The sound is much richer and it clearly helps the BL3 (much better than I expected as it is only 17 Hz. difference). I also downloaded several good MP3 files which reproduced lower tones in steps of  +/-10 Hz (up/down from/to 10 - 250 Hz). It also helps if you play around a bit with the placing of the Beolab 11.