Confused about wiring sub to amp at 2ohm??? Please answer , i'm confused?

On the amplifier, you should see at the terminals directions for running the amp 'bridged'. You should see a line over the terminals that show you which terminals to connect in order to bridge the amp. A two ch. has four terminals (2pos. 2neg.) but connecting the two labeled as 'bridged' will combine both channels of power into one channel of power output. On the sub you will connect both positives together and run them to positive on the amp, and the same with the negatives. YOu should then get 480 watts (hopefully thats RMS power) out of a single channel, pushed to the subwofoer. Two channels also have a switch for full range, high pass, and low pass, so just make sure it is set to low pass. Hope this helps.