okay so im having a problem here. i am running a kicker 1500.1 amp and it will be on one sub. do i need a dual 4 ohm or 2 ohm sub. i think 4 ohm so i can run it at 2 ohm and utalize all my amps power. because to get all the amps power i would hafta run the 2 ohm sub at 1 ohm and my amp is not 1 ohm stable. so am i right by picking the 4 ohm sub?