Current system: Alpine 7894, Infinity 5752cf + 652i in a Protege5 Problem: System lacks overall smoothness and highs are very harsh. If I turn down treble on the HU then the sound lacks detail. Should I change my speakers? Lots of ppl are telling me that's the problem with these Infinity. My budget is $400 for now and I might invest more later next year. I prefer a warm and mellow sound with detail (but not harsh) highs.