Monitor Source

We still need to ensure that Mix A is the source feeding our speakers. This is set in the "Monitor Source (MON SRC)" section of the console. This setting applies to the entire console, so there's no need to select a specific channel beforehand.

Mix A Level

The matrix lets you assign Mix A to the fader. The row of three blank buttons near the bottom allows you to choose between Mix A, Mix B, or Mix C. The blank column on the right allows you to select various console attributes, like the fader. To assign Mix A to the Master fader, press the blank button in the Mix A row and the blank button in the Fader Row.

The master fader is now set to control Mix A's level.