neetrs

Please help, I have a pair of Quartet speakers & I just love them & I bought them new, but I seem to have incured some damage to the woofer (bottom of the speaker in the back). I have been noticing a sort of vibration when the volume is up & music with quite a bit of base is playing & I have finally determined that the middle part of the woofer in the back was somehow pushed in a little bit & there is a noticeable affect to the sound in that speaker when the volume is up. I checked the other speaker & it's nice & round. Can this be fixed or is this something that can be replaced from Klipsch even though this speaker isn't manufactured anymore?