Pinkus,
New Cremona M is 40Hz-30kHz(anechoic) and old Cremona is rated to 32Hz(in room!).
Also John Atkinson room is pretty bass friendly(nice room gain).
BTW, if you look John Atkinson review of Amati Anniversario you will see that Anniversario do not go any deeper in bass in his room then old Cremona. BUT, in my room(almost 40m2) difference in bass definition, depth and tightness between Anniversario and old Cremona are night and day, belive me!
Elipsa also has better bass to my ears then old Cremona but, it is rated only to 35Hz(anechoic)...
Point is with room gain new Cremona M will go deeper then old one, at least IMHO...