Operation; Normal Operation Mode; Keys And Knobs; Power On/Off - Toa 9000 Series Operating Instructions Manual

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]
TOA 9000 SERIES AMPLIFIER A-9120DH
Input channel selection keys
Input volume encoder
Input channel ON/OFF key
Output channel ON/OFF key
Output channel selection 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
storage" in the UTILITY setting on page

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.
INPUT SELECT
1
2
3
4
INPUT VOLUME
5
ON/OFF
6
7
8
39.
This figure represents the A-9120DH.
OUTPUT VOLUME PARAMETER
MEMORY
ON/OFF
ENTER
OUTPUT SEL
POWER
UTILITY
ESC/BACK
Power switch
Parameter setting knob
Enter key
Memory key
Output volume encoder
"Memory erasure or
16