Is there any difference between Eminence Alpha 12 and Alpha 12A?


I found a guy who could import a pair of Eminence drivers for my planned Thermionic Three Pi but on the source´s homepage (http://www.newsensor.com) the 12 inch Alpha driver is called "Alpha 12A". I did a google search and found that partsexpress also have the A in the end of the name but I also found that their specifications didn´t differ at all from the ones at the Eminence site.

Are these two different versions? Or can I use the Alpha 12A for my Three Pi?

/Erik


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