So I bought an '08 accord coupe ex-l with navigation recently. It comes with a "premium" audio system in it but I was spoiled by the rainbow system in my maxima so I need to upgrade this in the near future. I'm kind of confused as to how I could do this though. Like is the radio separate from the navigation system or is it all in one? It's apparently a fairly complex system with the way the subs/amps are wired also. So is it similar to a bose system where I would need to replace the entire thing or can I just replace the speakers?

 

I am not familiar with the accord, but the cars nowadays, have an all in one system and everything is intergrated. It may be worth it to just get a JBL MS8 processor (not cheap, but worth it) and keep factory head unit and replace all the speakers. Or your can scrap the entire set up and go all aftermarket.