Ok, auditioned the BL5 again with not so good source material. We listened to palladia tv channel and I must say I was impressed. I could not hear distortion whatsoever. It was loud and clear.
The quality of the bass was superb for such a small speaker but I thought that the punch was a little too much ...or maybe because I am not used to it. However, I do live in an apartment building with sound proof installed in the walls. Until today I never had complain even with two subwoofers (JL) in my system.
Those BL5 worry me somewhat. The floor was vibrating a lot in the store. I am afraid that those 15" woofers facing down the floor could cause the same in my apt.