Rear speakers replaced - Sounds worse?
I ended up replacing my old 6x9 Rear deck speakers because the factory ones were blown and sounded bad, I replaced them with some HD 6x9s from Walmart because my buddy has them in his car and they sound pretty good, Even a good amount of bass.
anyways, Installed them in my '00 300M, And well, They sound horrible. Hardly any bass, Aren't near as loud as the stock speakers and just general suck. I thought maybe it was the ones I got, so I exchanged them for a new pair - Same problem.
Was wondering if maybe adding different speakers messed up the cars built in amp or something? I made sure all the wires would connected right and tight, To no avail.
Also, Would adding an aftermarket head-unit mess up stock AMP by any chance? Looking for something with more power and an AUX input for my phone.