You can just add a sub to this system? Is it easy to do? I can see how the speaker setup is good for clarity, but I personally dont think a 8in can produce lows accurately, but it may do it well in a car this size.

 

yeah of course..but that requires some working knowledge of audio systems..wiring diagrams etc. I'll just take my car to my friend at Tweeter...he already has relocated my XM antenna to a totally different, yet hidden part of the trunk for me.