I put in this system last weekend and it baffles me that people are putting in systems in Z's with dbl/triple/or more power than I put in mine. Now I am excluding anyone showing their vehicles or entering competitions. Mine is so loud and clear my ears ring if I turn it up past one quarter volume,bass hits hard enough listening to Rock that folks are looking my way from a few blocks distance<which I do not want but have noticed>. I mean do ya'll really listen to your systems loud enough to warrant all that excess power ?

Pic of whats installed in my Z:
HU Pioneer AVIC-D3

Speakers,amp,encloosure