Ok guys (and gals) I have a 2007 Chevy Cobalt and currently have the following:
Head Unit: Alpine CDA-9857
Front speakers: JL Audio C2-650x (6.5" coax)
Rear speakers: Diamond audio D393i (6x9" coax)
Sub: Infinity Perfect 10d VQ in a custom sealed fiberglass box
Sub Amp: Alpine MRP-M500
The interior speakers are driven off of the head unit, and I will most likely keep it that way. My big complaint is that I have no way to crossover the interiors. I am looking for a head unit with more audio adjustability, but still retains the same functionality for my iPod as my current Alpine. I have looked at the new Alpine units that do not have CD and though they are nice, it seems like you need a lot of add on’s for them to be truly bad ass. I have also been looking at the new Pioneers, but I don’t know how good they will be with the iPod (Alpine seems to excel at this). Let's hear what everyone has to say.