AnthraX1,

I'm not sure exactly what SuperWhite is - perhaps it is a limited technology that is proprietary to Sony. If you can't see a difference, it might be best to keep it off. I don't see why it would case any damage if it was on, but PQ being almost idential, it might be wise to just leave it off.

As far as the speakers, they support whatever sound comes through them. The kbps rating should have more to do with dynamic range and overall quality than a spec that could potentially break or even age the physical speaker cone. You should feel comfortable setting it to any range offered by the PS3.

I hope that helps.

--HDTech