OK, need some input on a speaker problem I'm experiencing. I completed a sound deadener project and figured while I had the inner quarter trim and door trim panels off, I would replace the speakers. I used the same size so there was no modifying needed. They're done and now I am getting what seems like an echo effect from the rear speakers, right more so than left. I've taken off the inner quarter trim twice now to make sure the connection is good. It seems to be more noticeable when people are talking on the radio than when there's actual music. I've replaced speakers before on a number of different vehicles and not experienced this before. Bad speakers? Any thoughts would be appreciated.