Technical Notes; Ext In; Mix Out; Priority Volume Control - Inter-m PA-120 User Manual

∴ TECHNICAL NOTES

EXT IN

This input can be used to expand the mixer inputs. It is the input to the power amp stage of the
mixer amp. An external mixer can be connected to this input and expand the input capacity of the
Mixer amplifier.

MIX OUT

The MIX-out is a line level signal output of the mix bus. It can be used for recording, linking to another
amplifier for additional power, or linked to a processor and subwoofer amplifier.
Input Selection Switch (INPUT 1~3, INPUT 4~5)
- INPUT 1 ~ 3
Select LINE, MIC or PHANTOM depending on the input signal. Select PHANTOM to supply DC
voltage required by condenser microphone.
- INPUT 4 ~ 5
Select LINE or MIC in accordance with the input signal

Priority Volume Control

Sets the ducking level giving priority to telephone, mic 1, mic 2, EXT in, chime and Siren, over all
other BGM inputs.
Speaker Zone Pre-set
The SPEAKER ZONE ON PRESET can be set via these DIP switches. This function allows the amplifier
zone output selector to revert to a pre-set selection when the power switch is turned ON. For example,
by setting DIP switch1 and 3 on, this will set the speaker zones 1 and 3 on when the power switch is
turned on.
PROTECTION
The PA-120 employs a protection circuit to protect the amplifier from momentary or long-term overload
and overheating. The PROTECTION LED on the front panel when lit indicates that the protection circuit is
activated. No audio will be heard when the amp is in protection mode.
External CHIME connector
The CHIME can be remotely activated by connecting a push button switch to this terninal.
EX MUTE connector
The output level of INPUT 3~6 are controlled by the priority control volume when the external mute switch
terminal is closed.