Ok, I have a few questions about this stuff..
1) I am looking at this stuff because I can get really good deals, I know its lower end:
-Audiobahn A8002T- RMS: 800 x 1 bridged, 400 x 2 @ 2ohms, 200 x 2 @ 4ohms ( not 1 ohm stable)
- AUDIOBAHN 12 INCH SUBWOOFERS AW1251T- 400 RMS, 4ohm DVC, 92.1db efficiency
-How would you wire these together in order to get 400 rms to each sub?
-Could you wire one channel to each and connect the positive and negative leads on each sub to have a 2ohm load to each channel?

2) -Right now I cant replace my head unit because i dont have the money, but until then could I just wire my stock system into the amp, which has speaker level inputs?
-When you do that which wires do you put in the amp and where?

Thanks!!

 

#1: Car Audio Subwoofer Wiring Configurations
Use the calculator and enter what you have. You want series parallel at 4ohms, bridged will operate the amp at 2ohms and give you the most out of it.
#2: you could but the problem is the range on your factory h/u stops at like 50hz. Unfortunately subwoofers are meant to produce at 120hz-30hz so you will lose alot of range.(as pertains to subs) Think of connecting it as an absolute band-aid. Also weigh out whether its worth it to put it in, or be patient and do it right.

 

I've seen a lot of wiring diagrams, but what I'm confused about is the amp part of those diagrams. What if you have a 2-channel amp? Are the + and - coming from the amp representing a single channel? And I am going to get a nice head unit and speakers. Also I actually like these parts and have heard good things about them, so it will be done right, just when I have the money.

Also what I'm asking is if I have that 2chanel amp with two 400rms 4ohm dvc subs, could I wire a sub to each channel like this(achieving a 2ohm load to each channel making 400rms out of each channel on the amp)?:
http://mobile.jlaudio.com/support_pages.php?page_id=161
(very top right)

 

ok on the diagrams, the amplifier connections are omitted due to the possibilities of connections. As you see the 4ohm final load, this is showing you your terminal connections on the wire side. From this point they are assuming you are using the amps manufacturing specs. With the amp you have, it is "4ohm mono" stable also referred to as "4ohm mono-bridged". What this boils down to is that if you are to bridge this amp you will be able to do it with NO LESS THAN 4ohms. The first diagram shown is the one for you to use.

As per the second question. You want to bridge this amp. So don't worry about the "per-channel" stuff. The diagram you are using as well is shown on a jl amp which is ohm matching, meaning 1.5-4ohms has the same output. Apples and oranges compared to what you have. Use the diagram I posted and connect the final connections to left positive/ right negative on the amplifier.