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9. OPERATION
To operate the unit in the matrix mode, make necessary settings in advance such as the audio input/output
settings and event settings (including broadcast pattern and BGM broadcast group).
9.1. Normal Operation Mode
In the matrix mode, the unit need not be operated in normal conditions since the set broadcast patterns can
be activated by means of remote control. However, it is also possible to adjust the volume or activate the
broadcast patterns directly using the front panel-mounted keys and knobs.
This section describes operations that can be performed in normal operation state when the key lock function
is disabled and the unit is set to the matrix mode.
9.1.1. Keys and knobs
[Front]
This figure represents the A-9120DH.
ON/OFF
OUTPUT SEL
ON/OFF
OUTPUT VOLUME
INPUT VOLUME
POWER
UTILITY
ESC/BACK
MEMORY
ENTER
PARAMETER
8
7
6
5
4
3
2
1
INPUT SELECT
TOA 9000 SERIES AMPLIFIER A-9120DH
Input channel selection keys
Input channel ON/OFF key
Output channel ON/OFF key
Input volume encoder
Output channel selection key Output volume encoder
Parameter setting knob
Power switch
Enter key
Memory key
9.1.2. Power ON/OFF
Power is turned on when the power switch is pressed.
To turn off the power, hold down the power switch for 0.5 second or more.
9.1.3. Changing the input volume
Step 1. Press the Input channel selection key to choose the input channel for which you want to change the
volume from those with the illuminated Input channel ON/OFF indicator (channel number).
The selected channel's selection indicator (red dot) lights.
Step 2. Adjust the volume using the input volume encoder.
Tip
Whether the changed volume is saved or not depends on the setting item "Memory erasure or
storage" in the UTILITY setting on page 39.
9.1.4. Input channel ON/OFF
Input channels alternate between ON and OFF with each depression of the Input channel ON/OFF key.
The channel is ON when the input channel ON/OFF indicator (channel number) lights.