I have a Mach 460 system and it came with an aftermarket head unit (3100 Pioneer I think). The headunit only has outputs for four speakers, so does that mean that only four of my speakers are functional or do multiple speakers just play the same signal that has been split? Thanks.

 

page 2 of my sig, hit me up with questions. they will all play and sound better then the stock deck if you do it right.