What does PPI stand for and where do you get them at? Thanks again guys for all the help.

 

It stands for precision power inc. <img border="0" alt="[pimp]" title="" src="graemlins/gr_pimp.gif" />

 

I have a pair of xplod 6 1/2 in my front doors and 2 10's under my back seat. The subs are running off of a 300 watt amp and my xplods are running off of my Pioneer cd player. Im not a big fan of mixing brands, i originally had the cdplayer in my other truck with pioneer 2 ways, btw. needless to say i am NOT pleased with my xplod 6 1/2 3 ways. They produce decent sound, but i find that my pioneer 5 1/4 2 ways produced alot better quality. Maybe this has to do with the fact that they were the same brand as the cd player and that they were the "Premier" series (whoopty doo).