148 Chapter 14: Monitors And Communications
PRO Series Live Audio Systems
Owner’s Manual
source (a and b) sections
The source a and source b sections contain monitor
input selector switches. On both the A and B
systems, these define the source for the monitor
section from the possible ‘primary’ choice of stereo
master (ST), mono master (MONO) or external
(EXT). Additionally, each section has a talkback
switch.
The function of the buttons in each source section is
as follows:
• TALK/[A and B] switches, sum the talk back
signals to the solo bus. The talk mic section (see
“Talk mic” on page 154) has a level control knob that is shared between the two
monitor paths.
• ST switch, routes post-fader stereo master mix to stereo local monitor outputs.
• EXT switch, routes stereo external input (two-track return etc.) to stereo local
monitor outputs.
• MON switch, routes post-fader mono masters mix to stereo local monitor outputs.
solo (a and b) sections
The solo signals can be selected for each monitor
system (A and B) to be AFL, PFL, additive or
interlock cancelling. PFL and AFL audio buses may
accept injected external signals, and two control
knob level controls make adjustments.
PFL and AFL levels are adjustable via the pfl level
and afl level control knobs; see “solo system
section” on page 149.
The function of the buttons in each solo section is
as follows:
• PFL switch, sends mono pre-fader listen (PFL)
solo bus signals to headphones and local monitor outputs. With PFL switch disabled
(LED extinguished), stereo after fader listen (AFL) solo bus signals are sent to
headphones and local monitor outputs.
• ADD switch, allows multiple channel access to solo buses. When solo add mode is
off, pressing a solo switch cancels any currently active solos. Multiple solos (for
example, stereo left and right signals) can be monitored in this mode provided solo
switches are pressed at approximately the same time. When solo add mode is on,
auto-cancelling is defeated, which allows multiple channel or output soloing. In this
mode, input solos have priority over output solos and VCA solos, and will temporarily
override them. When input solo is cancelled, output solo or VCA solos will return.
• CLEAR switch, illuminates when a solo switch is active in its monitor section and,
when pressed, clears any solo switches in that section.
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