I have a rockford 800s 2 channel specs are 200X2 at $ohms , 400X2 at 2 ohms and 800 at 4ohms when bridged. I am considering buying a DVC SUB, adire h2 really not important cuz they are all good and i care more about wich one i get the best deal on. DO I NEED TO GET A dual 2ohm or a dual 4ohm some subs say just 4 ohm others say dual 2ohm, i get confused if they are already accounting for both coils or not. for instance with teh orion h2 they are dual 2ohm or 4 ohm, I would need a dual 2ohm and run it in series to achieve a 4ohm load on my amp??????? please help me out, if anybody has the time. thanks guys