The best speaker for chambermusic and j***

For 30 days now my SL2 runs day and night. I think, I can take the liberty in the meantime
over it a judgement.
The weak point first: Below 35 cycles per second does just as little as with the SBLs.
Up however the sound is more exactly than I heard it ever of a hifi gear.

The lower box swings with larger volumes so strongly that it is to be felt with the fingers.
The xover swings also. The rubber uncoupling of the xover can prevent that not completely.
The connection xover to tweeter can transfer the vibrations to the tweeter.

Therefore a small change should one however with the passive SL2 make: one takes a board 8,5cmx56cm
and screws on it the xover.
The board stands behind the SL2 on the floor. The xover is so highly screwed on that
the naca5 connections to the tweeter and bass sit not tautly.
That was not any more than 20 minutes of work. I do not have the boards however yet in
the same wood as my speaker - perhaps can Naim help me here?
The improvement is very large. If it depends not so much on the reproduction of the
lowest oktave as rather on extreme accuracy the SL2 is reached by no other loudspeaker
I have ever heard.

Ulrich