NVX® True 900 watt RMS 5-Channel [JAD Series] Class D Car Full Range Amplifier [JAD900.5]

how much rms wattage does the sub get? and is this loud a really loud amp?(:

Is it possible to have the speakers running at 4 ohms and the sub running at 2 ohms? If so, what are the power ratings then?

Would this amp push 2 sound stream 8in subs decient enough

Can anyone recommend this amp for a Harley Davidson, two speakers in the front and two 7 inch subs in the back?