Well, I wanted to post back just so people who run into the same problem know what to do. I called Klipsch support via there website and 800 number. A Klipsch rep said that they don't believe the speakers are countefeit but do not have record of those serial numbers and aren't numbers they would have issued. He was saying that the RP-240s serial numbers start with a "10" meaning anything else would have been put on after by a dealer, which would mean it was either a Floor Model, Refurb or Open Box. None the less, these would not be covered by Klipsch's warranty.