I'm not seing any difference either. Freq. Resp are identical. the only difference I see is, 1db less in each the SPL's.
IS the only reason to get these to be able to play louder ? because right now my M80's are loud enough.
not sure the cost to upgrade is worth it for me, just to get more volumn. I would love a little more bottom end, definded bottom end. other than that nothing a good sub or two would cure


Anthem MRX520
M5HPv4
VP160HPv4
QS10v4