Allen&Heath WZ16 2 - Manual (Page 13)

STEREO RETURNS
Two stereo return inputs ST1 and ST2 are provided giving you a
total of 20 inputs to the L-R mix. These may be used for returning
the processed signal from the effects devices, monitoring and
replaying your 2-track recording, expander or submix inputs, or for
stereo intermission replay.
AUX1 LEV - Sends the return signal (L and R combined into
mono) to the Aux1 mix independent of the level to the main mix.
This lets you feed effects to the performers monitor. When using
the return for 2-track replay you can replay the recording to the
performers cue. Up to +6dB boost is available.
L-R LEV - Adjusts the return signal level to the L-R mix.
MASTERS
AUX MASTERS - Each aux mix has a master level control that
adjusts the output level to match external equipment, or to trim the
monitor, effect or recording level without affecting the mix balance.
Up to +4dB of boost is available above the nominal '0' position.
L-R FADERS - Individual 100mm faders adjust the main L-R mix
level with +10dB boost available above the nominal '0' position. For
best performance the faders should be operated around the '0'
position for normal 'loud' level. If you find yourself operating
significantly below '0' then the amplifier or recorder input is too
sensitive for the console +4dBu output. Simply turn down the
amplifier or recorder level trim. If none is available then insert an
attenuator pad between the console and connected equipment.
MONITOR
PFL - A large red LED lights when any channel PFL switch is
pressed. The PFL signal overrides any selected monitor source.
MONITOR SWITCHBANK - 9 switches select which source you
listen to on the headphones and view on the L, R meters. These
include Aux1-6, ST1and ST2 in stereo, and L-R. It is useful to be
able to turn off L-R in the monitor so that headphones spill does not
cause a distraction during live mixing.
Priority works from the top of the switchbank down as follows: PFL
interrupts Aux, interrupts ST1, interrupts L-R
For example, you can select L-R to monitor your mix, then press
ST1 to interrupt L-R with your 2-track replay, then press an Aux to
check a monitor. Pressing any PFL always takes priority.
Auxes can be monitored in mono or as combined stereo pairs. For
example, press Aux1 for mono, press Aux1 and Aux2 together to
monitor Aux1-2 as a stereo pair. Pressing Aux3 overrides the
Aux1-2 monitoring, and so on. This is most useful when you set up
stereo cue or recording sends.
L-R POST/PRE - This switch is recessed to prevent accidental
operation. It should be operated with a pen tip or other sharp object.
In the normal up position pressing the L-R monitors the main mix
post-fader. When down, L-R is monitored pre-fader so that you
can monitor the mix unaffected by the L-R fader positions.