I would like to know if the forcefield 4 with the programmable logic device needs calibration capability such as Paradigms PBK. Will any future forcefield subs have this ability?

Not exactly sure what you're asking, but the ForceField Subwoofers do not have any on-board or out-board room EQ capabilities at this time. Most all of today's receivers/processors have a room correction system included and there are after-market subwoofer room EQ systems available for sub-only EQ as well.

Hope this helps.