Edirol UA-20 Owner's Manual page 73

Settings the sound input/output
1.
From the Apple menu, select Control Panel – Sound.
The Sound dialog box will appear.
2.
Click the Speakers tab or Speaker Settings.
3.
With the volume turned down on the UA-20 and on your peripheral audio equipment,
click [Start Test].
Test signals will be output from the UA-20; left first, then right, as indicated in the screen.
The output volume of the UA-20 cannot be adjusted with the Mac OS sound dialog
box. Make volume adjustments through other means, such as on the speaker system
you are using.
4.
In the Sound dialog box, click the Input tab.
In Choose a source for sound input (Device), select USB audio.
* Do not check "Play sound through output device".
If USB audio is not displayed, close the "Sound" dialog box, and disconnect the UA-
20's USB cable from the Macintosh. Perform the driver installation once again.
5.
In the Sound dialog box, click the Input tab.
In Choose a source for sound input, select USB audio.
* Do not check "Play sound through output device."
6.
When you are finished making settings, close the Sound dialog box.
From the File menu, select Quit.
Appendices
73