Change default outputs in MacOS X

[olbert]

Hi,

how can I change the default ouputs (channel 1 & 2) to channel e.g. 3 & 4 under OS X?
In Windows it's not a problem. There I can choose in the system preferences > audio > simple output 3 & 4. But in OS X I can't find such a option.

Got anybody an idea what could help?

Cheers,
Olli