Review on ACDelco 96673600 Original Equipment Speaker by Mitchell Watson

I bought this speaker for my 2008 Saturn vue. I've had the car since it was brand new and one of the speakers eventually died. So I bought this as a replacement as it fits just right. Well I wired everything up and it's just plug and play. It worked great for about a week and then all of a sudden the bass was gone! Now that sounds terrible! Definitely not the same standards as the original that lasted over 10 years! Took the speaker out to test and it just fired. So now I'm at a loss and don't know what to do here.