So I just picked up a 2015 Scat with the 10 speaker upgraded Alpine system. The system leaves a lot to be desired for both lows and highs. I added the JL Stealthbox so I now have the bass I was looking for so now I am trying to address the highs. I was just going to stick a set of 3.5" Infinity in the dash and I think that would be a great upgrade, but I read a post that posed the notion that the door and dash speakers could act as a component set. Meaning they the factory system sends bass signals only to the door speakers and only high frequencies to the dash speakers. Can anybody confirm this? If this is the case I will pick up a 6" X 9" or 6.5" component set and stick the "sub" in the door and stick the tweeters in the dash. Just looking for some confirmation somebody that has some experience with the system in these bad ass cars.