I have an 01LC without nav, I have only owned it for about 3 months, approx 60k miles on it. All of the speakers sound like they are blown out. The RF door speaker was just replaced by the PO with a new factory JBL one a couple of months ago and it still sounds like it is blown out also. Even at very low volume levels the speakers slound distorted when any kind of base comes through them. It is not the HU because I just replaced it with an aftermarket one due to bad cd player, bass sound did not improve. Does this shound more like an amp issue or could 1 or more of the other speakers be bad causing and issue through all of them?