This question keeps coming up, and most answers can be found by using the search feature. There is no "ONE" answer to this question. Axiom has made subtle changes over the years to all their speaker models. This is common for most manufacturing companies. For the most part there have been no major changes, but they felt it was time to change the product codes. Below is a link where Amie responded to a newbie that just didn't get it.

http://www.axiomaudio.com/boards/showfla...true#Post138115


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