When the 4430 was introduced I had the chance to compare side by side with L300. I remember well noticing that the 4430 seemed less distinct / spatial / cl;ear in that crucial vocal area.
Don't get me wrong , 4430 is not a bad speaker but compromises were made because they had to be.
Today's drive units have made possible in a two way what was not available back then.
Anyway the OP has 2205's , they will play and loud at that. They will tolerate some LF Eq and probably sound dynamic and exciting. Maybe his best plan is to run as he is and save up for some 2216nd ( that will play up to the horn and deliver serious bass ).