I've got 2 sets of speakers. One set is a pair of Infinity 505cs 5.25" components that run 225W max and 75W RMS. And then I have a set of Infinity 552i 5.25" coaxials that run 135W Max and 45W RMS.<br />IF my Alpine deck runs 60Wx4 does it make a difference in my sound (balanceness) if I run all my speakers off the deck? Would it be better to buy like a 100W amp for the back speakers and then run the fronts off the deck or the other way around? Or finally, would it better soundwise to run all 4 off of an amp? Anyone got an answer to this..my main concern is the balance of sound becuase the 552i's for the rear cant take as much as the 505cs for the fronts.