ok, i have two amps:
1) sony 2 channel amlifier 760W peak/ 380RMS
2) Kicker Impluse IX252 2 channel 40RMS per channel
and i have a kicker 07DCVR122 sub package that has 2 12 inch compVR subs (1600/800RMS total) and 4 kicker speakers (2 6.5 Front and 2 6*9 back). right now i have connected my subs to the sony amp (bridged) and now i want to connect my four speakers to the kicker amp. can i just use the RCAs to connect the kicker amp to the sony amp? oh my HU is pioneer primier 480MP with 4V outputs. what is the optimal way to setup this system? how would you set it up for optimal sound if you hadthe same system? please give me details :D

 

You can't really connect 4 speakers to a 2 channel amp, unless that amp is 2 ohm stable... By connecting 4 speakers, you're effectively doubling the load on the amp, and if the amp isn't 2 ohm stable, it won't work too well...

I would say sell the Kicker 2 channel amp and buy a good 4 channel amp.

Does your Pioneer deck have 3 sets of RCA outputs? I'm assuming it does, so you would run 3 sets of RCA's (1 for the sub amp and 2 for the 4 channel amp)..

 

use the kicker 2 channel for your front stage.. use the rear channels on the HU for the rears.

and the sony for the subs

 

you can use the 2 channel amp for the 4 speakers fine but you will lose your fade and ballence need to find ot if the 2 channel amp if each channel is 4 ohms and if it is your golden you need to tye the front 2 speakers too each othere on one channel and do the same for the rear on the other channel and that is how it is done