Optimus PM-804A Installation And Operating Instructions Manual page 17

PM-804A
8x4 Matrix Mixer
11. Power LED indicator.
This indicator lights when power switch is turned on.
12. Power switch.
This button turns on/off the device.
13. Monitor switches.
These buttons allow to monitor each output channel through monitor speaker.
14. Monitor output control.
This control allows to adjust the volume level of monitor speaker.
Monitor speaker.
15.
It allows to monitor the audio of the 8 program inputs. It does not allow to monitor the "Remote
Mic" or "Alarm Message" inputs.
16. PFC / ALT selector.
This control allows to select if the signal is sent to monitor speaker before or after master volume
control.
PM-804A Version 1.1 Page 5 of 11