I still don't understand what your saying right there. Ok for instance say your amp is rated to handle 2 ohms, that means that your amp is 2 ohm stable and your subwoofer system should not go no less that 2 ohms. If it does then you run the risk of blowing your amp.

Now you can set out your subwoofer system according to how much subs you have, to get a 2 ohm stable stable system by wiring them together in series/parallel or what have you. So when you connect your subs to the amp the amp will see one resistance value.

http://www.jlaudio.com/tutorials/wiring/index.html

try jl audio wiring site, they may be able to show you the time.