Ok, right now I have 2 DigitalAudio 12" subwoofers hooked up to a 2000w 2 ch. Nitro amp. If I crank it up, the amp will go into protection mode. I've been told its because of a low ohm load. So, I think I have the subs wired wrong. The suwoofers are dual 4 ohm, but can be put into 8 or 2 ohm operation. So how should I wire them? The subs are in a sealed box, (each side is sealed by itself) also I have the subs bridged. Thanks!