I'm looking to build a system that would give me great sounding,somewhat loud bass without needed to do any time of electric upgrades to my car. With that being said I guess I would be looking towards more of a SQ Set up the SPL. I would like to build a system around a good set of component speakers. I'm currently looking at a set of Focal performance ps165 . These are 80 watts rms.
As for the sub I'm looking for recommendations a 1 12 or 15inch set up .