Connections To Line/Mic Input And Line Output Terminals - Toa IP-A1PA12 Instruction Manual

9.2.1. Amplifier switching control
External amplifier inputs are enabled under the following control conditions:
• Power to the unit is turned OFF.
• The Mute setting switch is ON and the Mute terminal is receiving a 24 V DC cut-off signal.
• System mute in progress.
• Control input in progress (during event setting).
• Control is performed by external command.
IP-A1PA12
Internal Amplifier
Tip
Hardware control refers to control via the power and Mute terminals. Software control signals are not
accepted during hardware control.
9.2.2. Symbol
Symbol Location
Rear panel
Rear panel

9.3. Connections to LINE/MIC Input and Line Output Terminals

Use the supplied removable terminal plugs (6 pins) for connection. Use a 2-core shielded cable to
connect the audio device.
For connection of the removable terminal plugs, see "Removable Terminal Plug Connections" on p.
15.
12
External Amplifier
External amplifier input terminals
C
R N
Amplifier switching
H
C
Hardware control
Software control
Caution
Indicates a potentially hazardous situation which, if mishandled,
could result in death or serious personal injury.
Warning
Indicates a potentially hazardous situation which, if mishandled,
could result in death or serious personal injury.
relay
N
R
C
Speaker output terminals
Description
Speaker
（12 W or less）