head unit to amp

i have  a 4 channel amp and 2 4 ohm svc subs. will be bridging 4 to get 2 channels each going to 1 sub. what will the ohm load be on the amp? also, since i am powering the subs with the amp should i use the sub outs from the h/u or go front-channels 1 and 2, rear-channels 3 and 4? if i use the sub outs....do i just use a y rca adapter to branch to ch.1/2 and 3/4? or run into ch 1/2 then use a patch rca from 1/2 out- ch 3/4 in? will be using seperate amp to run the fronts and rears fyi.

Since each sub is 4-ohms, each bridged amp set will run at 4-ohms.  The loading on an amp is determined by the speaker connected to it, not vice cersa.  Use the sub-out from your head and a y-cable to send the signal to both sides of the amp.  Be sure to properly adjust the input sensitivity (gain).Support the12volt.com

dyohn, wouldnt the patch cables also properly work in his situation?Quad L Handyman services

If the amp has that capability, yes.  What is the amp?Support the12volt.com

amp is a lanzar vibe 438 and has an output for each channel pair- ch 1/2 in and out, ch 3/4 in and out