Hi,
something has changed...after I wrote my last message yesterday evening.
As a matter of fact, after almost two days of work, my La Scalas dramatically changed. They started to sound clearer and cleaner, and with a lot of details. The bass become faster and dry. A very pleasant and amazing experience.
I think that it could depend on the fact that my La Scalas "have been dumb" for at least one year in the house of the previous owner. Therefore they might have required some hours of warm up.
At this point, before to decide for any kind of upgrade in the crossover, I will wait for a while. However...I am really happy and excited for the sound of these speakers!
Thanks a lot again for your help.
Roberto.