I helped install everything seen here. He did the amps though. I built the box and finished it while doing my shitty amprack. FYI, 2006 GMC Sierra.
My friends install.
My friends install.
"ZPA's will have the same sound essentially as you get from the MS, they just feature a bigger shinier set of balls."
Install:
http://phoenixphorum.com/viewtopic.php?f=10&t=16998
Install:
http://phoenixphorum.com/viewtopic.php?f=10&t=16998