PUBLIC ADDRESS AMPLIFIER
7
PAM-312/324/336/348
3. IMPEDANCE SELECTION SWITCH
It is a switch to select the impedance before connecting with the speaker(s). Select 70V or 100V impedance
a
s desired.
4. TEL IN TERMINAL
It is a terminal to connect and use a unit such as TP-6231A, Private Branch Exchange (PBX), or Paging
Adaptor. You can broadcast through the transmitter of the telephone.
A balanced audio signal is input (signal +, signal-, GND).
※ You cannot connect the telephone line directly.
※ If a signal is input into the TEL IN terminal, all the input signal volumes other than the EM signal are
turned down according to the values set by the TEL IN Priority Adjustment Volume and the INPUT 1 and
2 Priority Adjustment Volume.
5. TEL IN INPUT SENSITIVITY CONTROL
It is a control to adjust the TEN IN input sensitivity. If you set the control to minimum, the input sensitivity is
set to 0 dBV (1 Vrms); if you set the control to maximum, the input sensitivity is set to -20 dBV (100 mVrms).
6. TEL IN PRIORITY ADJUSTMENT VOLUME (TEL IN MUTE)
It adjusts how much the INPUT 1, INPUT 2, and CHIME sounds are decreased when a signal is input into the
TEL IN terminal. You can adjust how much the INPUT 3 ~ INPUT 6, EXT IN, and module sounds are
decreased by using the INPUT 1 and 2 Priority Adjustment Volume next to INPUT 1.
If a signal is input into the TEL IN terminal, all the signal volumes other than the EM signal are turned down
according to the values set by the TEL IN Priority Adjustment Volume and INPUT 1 and 2 Priority Adjustment
Volume.
7. EXTERNAL INPUT (EXT IN) TERMINAL
It is a terminal to connect with the output terminal of the external device. A balanced audio signal is input
(signal +, signal-, GND). The input sensitivity is 0dBV (1Vrms).
8. INPUT 1~6 TERMINALS
They are INPUT 1~6 terminals. A balanced audio signal is input for the INPUT 1~5 terminals (signal +,
signal-, GND). The INPUT 6 is an RCA terminal to input an unbalanced audio signal (signal, GND).
1) INPUT 1~3 Terminals
(1) PHANTOM Switch: If you want to use a condenser microphone, turn this switch on to provide DC 24V
PHANTOM power.
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