Bad Cornwall IV?

Hi guys. I finally upgraded my decades old receiver to an Anthem MRX-1140 to compliment my Cornwall IVs that I bought a few months ago. While running through the room correction ARC software the right front speaker sounds very different from the left and center (all Cornwall IVs). Can someone look at this graph and let me know if the speaker is bad or what the problem could be?

ARC Graph

Thanks in advance!