Mackie FireWire User Manual page 17

3. Click the Audio Devices tab, and select Onyx FireWire in the "Properties For"
drop-down box.
4. Here you can change the sample rate used by your OS and applications.
5. You can also choose to use the Onyx mixer as your default input or output, as
well as designate it to be used for system sound output.
Owner's Manual
17