Im thinking of buying a rockford stage 3 10".It has dual 4 ohm voice coils ,what does this mean to me?If I want to run it at 4 ohms will I only take advantage of half the watts if I hook up one voice coil,and if I hook them both up from the best I can tell Id be at 2 or 8 ohms.If I run it at 8 ohms Ill only be drawing half the amp power,what if I run it at 2 ohms?If the amp is 2 ohm stable is this the way to go?Any help is appreciated.