How to tell whether a Usher BE-718 is North Americ

Is there a way to tell from looking at the speaker or referencing the serial number whether a Usher BE-718 is the North American version? I've read that the crossover and internal wiring are upgraded from the Asian version. Thanks
Why don't you call Usher with the serial numbers and they can tell you for sure.
The Asian one has slanted tweeters.