If your getting two cvr's dual 2 then you can only wire each sub to be 4ohms and wire them to their own channel. But you'll only give the subs 200rms each. Now if you were to bridge it, you only have .5ohms, 2ohms, and 8ohms. You can't wire it at .5 or at 2ohms. And you don't want to wire it at 8ohms since you'll get less power. So make sure you got dual 4.