I recently got a full soundsystem intalled in my 2001 Ford Taurus. This includes: a pioneer headunit, a Kickerr 1000-watt amp, two 10" 4-ohm Alpine Type R subs, and (recently) 6x8 coaxial Kicker speakers.
After installing the speakers, I noticed something odd....they seem to sound WORSE than my stock speakers. My stock speakers, pushed by the new headunit, sounded pretty good...but I figured the Kicker would only get better. Sure, they get loud, but there is ZERO bass and the highs are almost harsh. Should I just put the old ones back in? It'd be a pain to do, but it sounded so much better before.