Muting Function - Toa A-1031 Operating Instructions Manual

⑨
AC power cord
Connects to an AC power source.
⑩
DC terminals
Connect to a DC power supply. (A-1031 and A-1061:
12 VDC, A-1121: 24 VDC)
⑪
MIC 1 input (LH version)
Connects to the unbalanced type microphone of 30-600
ohms and with 1/4" phone plug. When this input
receives a signal, the muting function is operated.
(Refer to the next section for the muting function.)
⑪
MIC 1 input (ER/UK versions)
Connects to the balanced type microphone of 30-600
ohms and with 5-pin DIN connector. When pin 4 is
shorted with pin 5, the muting function is operated.
(Refer to the next section for the muting function.)
⑪
MIC 1 input (AS version)
Connects to the balanced type microphone of 30-600
ohms and with XLR connector.
Pin 1: Ground (shield)
Pin 2: Hot (high)
Pin 3: Cold (low)
⑫
MIC 2 and 3 inputs
Connect to the unbalanced type microphone of 30-600
ohms and with 1/4" phone plug.
⑬
AUX 1 and 2 inputs
Connect to auxiliary equipment.

5. MUTING FUNCTION

● H version
When MIC 1 input is used, it takes precedence and automatically reduces the volume of MIC 2 and MIC
3 inputs by 0 to –30 dB, which is adjustable with the MUTE control on the rear panel. The attenuation
level is preset for –30 dB at the factory.
● R and UK versions
Shorting DIN plug pins 4 and 5 of rear-mounted MIC 1 input allows MIC 1 input to reduce the volume of MIC 2 and MIC 3
inputs by 0 to –30 dB. The attenuation level is adjustable with the MUTE control on the rear panel and is preset for –30 dB
at the factory. Use TOA's microphone PM-222D or PM-660D to bring the best results.
5
3
● S version
Connect the supplied connector with lead wires to the muting connector on the rear panel, and the lead wires to the
muting switch. Turning on (shorting) the muting switch allows MIC 1 input to take precedence, muting signals of inputs of
MIC 1 and 2, and AUX 1 and 2 by 0 to –30 dB. The attenuation level is adjustable with the rear-mounted muting control,
and is preset for –30 dB at the factory.
4
2
4
Muting switch
1
To hot line of microphone
To common (shielded) line of microphone
To cold line of microphone
Muting switch
⑭
Recording output
Connect to a cassette tape recorder.
⑮
Output terminals
Connect to speakers.
⑯
Voltage selector (LH version only)
Sets the desired voltage.
⑰
Muting level control
Adjusts the background music volume to be
automatically reduced when the priority function is
operated.
⑱
Phantom power connector (ER/UK versions only)
Inserting this connector into the ON position supplies
power for condenser microphones from MIC 1
connector. Be sure to set this connector to the OFF
position when using the microphone that cannot be
operated on phantom power.
⑲
Muting control connector (AS version only)
Insert the supplied connector to short lead wires
attached to the connector, and the muting function is
operated, allowing MIC 1 input to take precedence.
Notes
• When all the five LEDs (+10 dB) remain lit, this indicates
that sound is distorted. In such a case, adjust each
volume control so that LED 4 (+8 dB) and 5 (+10 dB)
flash.
• When connecting speakers, use only one of the speaker
output terminals.