how to setup this system

hey i was just wondering how i would configure my setup for this system i have : 2x sony xplod 12 inch 800W rated 250, 4 ohm XS L1220 2x song xplod 500w 4/3 channel power amp XM 5042 Front speakers 4" peak power 130 W rated 30W, 4 ohm XS GTF1025B Rear speakers 6" peak power 190 W rated 40w, 4 ohm XS GTF1625B many thanks appreciated

also forgot to add headunit is Sony iPod/USB/MP3 PlayerCDX-GT590UI # 52W x 4 Peak power output # Direct iPod/iPhone control # Front USB input # Front auxillary input # Rear RCA output x 2 i currently have it setup as follows: 2 subs are being powered by one amp, 4 speakers are being powered by the other amp, the rca's from the headunit both run back to the amp powering the 4 speakers. the rear rca splits off and runs to the amp powering the subs. the subs are hooked up to the left and right terminals on the amp, so one sub is running left, and the other is running right

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this is how one amp is hooked up ^^

Uploaded with ImageShack.us this is how the subs are hooked up

What is your question, and are you planning on using the 2 unused channels of the bass amp?  

Are the rear channels of the amp also capable of operating a 2 ohm per channel load?  You have min 4 ohms on your diagram.

my question is how would i set this up correctly, as the way it is setup now, the subs dont sound as good as they did setup in my other car running one sub off each amp i dont know what your saying sorry, im not technical with this stuff lol

i dont know much about stereo's, ive only guessed on how to hook it up, and i was wondering if there is a better way to hook it up or have i done it correctly ?

what does that mean? sorry im a newb