The MPA 6.570 is 5x70 + 1x220 watts. Your sub would need the same wattage on 2 channels.
You could probably run the one 200 watt channel of the MPA 5.480 to both voice coils of your sub by running the voice coils in a series.
EMass could probably go into more detail.
You could probably run the one 200 watt channel of the MPA 5.480 to both voice coils of your sub by running the voice coils in a series.
EMass could probably go into more detail.