there are 2 ways to wire a dvc sub, parallel and series
parallel, you wire both pos leads together and connect to the amps pos then both neg leads together and connect in to the neg of the amp, and your resistance gets cut in half
for example a dual 4 ohm sub wired in parallel gives you a 2 ohm final load
series, you wire the pos of one coil to the pos of the amp, the neg of that coil to the 2nd coils positive, then the 2nd coils negative to the amp negative. this will double your resistance,
so a dual 4 ohm sub in series gives you and 8 ohm final load.
i dont know what coils you have in your subs, but if they are dual 4s you can wire each sub in parallel to 2 ohms then wire the subs together in parallel to get 1 ohm, and connect to your amps