Ok, so I just purchased a Kenwood DNX6180 in-dash nav system, and my buddy was talking about that I might want to change the speakers too to get more out of it. I'd never really thought about it, but now he has me thinking. If I do that, I'm pretty much thinking I need to add an amp too. My problem is I'm not mechanically or electrically inclined, so I'm not good at figuring out these types of things. So your thoughts, where would you start on the upgrade of the rest of the system? What types of amp/speakers do you recommend? I'm not one to really crank my radio a lot (but I do occasionally), and I care nothing about the people on the opposite side of the road being able to hear and feel my music a half mile down the road. Thanks for any input you can give me.