Before you hook up the infinity speakers... run the 4 chan amp on the bose speakers... I bet the bose sound nicer than your perfects! The bose can handle HUGE power... and they just keep getting louder... they are really awesome speakers. I had a pair of alpine SPX-137r's that I sold because I went back to my BOSE... I just bought a set of focal polykevlars, and honestly, the difference between the bose, and my focals... wasn't worth the money.