Hi terzaghi,
It could be, but I don't have access to the records on your speaker or, for that matter, what differences, if any, exist between current M80 production and models from 2007.
We do keep current reference models of each speaker in the listening room, against which random production samples are compared periodically, but I suspect the answer to your question likely resides in the curves and measurements stored in the anechoic chamber computers. Apart from the change and improvement in midrange sound quality in 2003 that I described in my earlier post, there have not been significant audible upgrades in the M80 v2 that I'm aware of.
Regards,
Alan
