ASL INTERCOM PS 6379 MK2 User Manual page 15

15 MASTER VOLUME knob
By turning this knob one adjusts the volume of the sum of all intercom signals as heard
in the loudspeaker and/or headset. This knob may also adjust the master volume control
for both the intercom and the PGM (Program Audio) signals, depending on the position
of jumpers #44.
16 PGM VOLUME
By turning this knob one adjusts the listen volume of the PGM input. The signal of the
PGM input can only be heard on the speaker and/or headset of the PS 6379 Mk2 and does
not appear on the intercom lines.
If a TALK button is pushed and the speaker is On, the speaker is automatically attenuated.
This diminishes the effect that the PGM signal goes from the speaker into the micro-
phone).
The position of jumpers #44 determine whether the program audio listen level is also
controlled by the Master Volume knob (#15).
17 STAGE ANNOUNCE button
By pushing this button the microphone signal is directly routed to the line level output at
the rear panel. The microphone signal (the 'Announce') is not sent to the intercom chan-
nels. Whilst the Stage Announce button is kept pushed, the channel TALK buttons are
disabled (the built-in LEDs extinguish if they were lit before) and the speaker is automati-
cally switched off. To achieve that the speaker is not automatically being switched off, the
position of a certain DIP switch must be changed. See section 11.0 DIP switch D).
18 SPEAKER ON/OFF button
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