OK I went there, a combination of too much free time on my hands and to many drivers I decided to try a little experiment. I swapped out the 6513 "donut" drivers on one of my 2.3's and substituted to 6502's just for $**ts and grins, they look much better, well the one does, the donut drivers are kind of fugly. The sound, to close to tell, maybe the one with the 6502's sound just a tad bit warmer. I do have two more 6502's and will do the other one for a full test.
Now back to your regularly scheduled program.