APB DynaSonics
14
© 2006 APB DynaSonics – All Rights Reserved
MONO INPUT BUS ASSIGNMENT AND PAN
L-R Assignment Switch
Assigns the post-fader channel signal to the Left-Right mix bus through the Left-Right Pan Control. In Stereo
or Dual Mono sound systems, this is the most likely used primary output assignment on the console (In
Stereo operation, signal is panned through the pan pot system to generate a panoramic image – In Dual
Mono operation, an identical signal (pan control positioned to center to send an equal and identical signal
to the left and right mix bus system) is fed providing system redundancy. In systems that include a center
(vocal) cluster, the left and right channels are usually used for stereophonic music reproduction. The
Left/Right outputs are also used for music reproduction when Center and Mono mix buses are used for A-B
vocal mixing. In theatrical applications where identical speakers covering identical physical areas are used
for “A” vocal mix and “B” vocal mix, eliminating any electrical comb filter effect between the two mics.
Center Assignment Switch
Assigns the post-fader channel signal to the Center mix bus. In mono sound systems, this bus can be used as
the primary output (leaving the L-R output available for stereo recording). It is usually used in LCR
installations to feed a discrete signal to the center speaker cluster (when not using the LCR assignment
system). It may also find use as a general purpose post fader output for use as an additional aux or matrix
send or as mix A of an A-B vocal mix.
Mono Assignment Switch
Assigns the post fader input signal to the Mono mix bus. It is used as a general purpose post fader output for
an additional primary console output. It may also be used as mix B of an A-B vocal mix.
LCR Assignment Switch
This switch overrides the Left-Right and Center assignment switches, meaning that the individual L-R and
Center switch positions are no longer active. Instead, the post fader signal is fed directly to the pan control
that is now re-configured to send signal to the Left-Center-Right mix buses in the desired pan location.
Pan Control (L-R or LCR)
In normal operation, this control takes the post fader signal from the L-R assignment switch and controls the
proportion of signal feeding between the left and right mix buses. When at the center position, both left
and right signals become equal. The Pan control never has an affect on the feed to the Mono bus, and only
affects the feed to the Center bus when in LCR mode.
When in LCR mode, this control is reconfigured to feed and balance the Left - Center - Right mix buses. As an
example of operation, when this control is set fully counter-clockwise, signal is sent to the left mix bus with
no signal being sent to the center or right mix buses. As the control is turned clockwise, signal starts to
decrease to the left mix bus but begins to increase in the center. No signal is yet being fed to the right mix
bus. When the LCR pan control is positioned to center, no signal is fed to the left or right mix buses, but the
full signal is now fed to the center mix bus. As the knob continues to be turned clockwise, the level begins
to decrease to the center bus and increases to the right mix bus. When the control is turned fully clockwise,
all signal is fed to the right mix bus while no signal is fed to the left or center mix bus. The taper of this
control is tailored to industry standards.
Discrete Sub Woofer Feed
Using Mono Assignment Bus
The MONO bus may be used as a
fixed level discrete feed to a sub-
woofer system. The Left-Right,
Center, and Mono outputs are
controlled from a single VCA
master fader maintaining balance
between all outputs including the
MONO sub output when master
signal levels are changed.
