I heard the really fast drives generate more heat which may be an issue.

I'd think that heat would not be too much of a problem because:
a) In the car, the drives are rarely spun up.
b) In the home, the ambient temperature will not get as high.

Also, the empeg has a temp sensor, no?

The bigger issue may be how much current the switcher can supply. I'm betting Hugo left plenty of margin, but it would be nice to know the maximum current that the empeg/Rio can supply.

-jim 080000260 w/18G in a Carrera