Allen&Heath WZ 20S USER GUIDE - Manual (Page 24)

24 WZ20S User Guide
CONSOLE MONITOR SYSTEM The WZ20S provides
extensive console monitoring facilities to satisfy a wide range of
applications including broadcast and club mixing. Every signal can be
monitored individually or within any mix. Two systems are provided,
headphones and local monitor. Two sets of headphones may be
connected at the same time. The local monitor can be used to feed a
stereo booth, stage or studio speaker system. The PFL (Pre Fade
Listen) system lets you quickly check channel signals and correctly
set gain.
MONITOR / MIX2 METERS A pair of meter bars displays the level of
the selected monitor source or PFL. With all selector switches up
these default to display the post-fader left and right output levels of
stereo MIX2. When SPLIT PFL is selected the left meter displays the
active PFL signal, the right displays the switch bank source in mono.
Each meter has 12 LEDs to indicate signal levels from as low as –
30dB. Green and yellow LEDs indicate normal operating levels. The
top red LED lights at +16dB to warn that you are within 5dB of
clipping. Meter ‘0’ represents +4dBu at the XLR outputs. The meters
are peak responding. This means that they have a fast attack and are
able to display fast transients accurately.
PFL A large red LED lights when a channel PFL is selected. This
indicates that the selected channel PFL signal is heard in the
headphones and displayed on the monitor meters. PFL also
overrides the local monitor if PFL ENABLE has been selected.
It is important to use PFL to set the channel gains correctly to
maintain the wide dynamic range achievable with this console. If set
too high then the signal may clip resulting in a harsh distorted sound.
If set too low then the signal-to-noise ratio is reduced and residual
hiss may be heard. You should adjust the channel gain so that the
signal averages ‘0’ on the monitor meters with highest peaks no more
than ‘+6’.
HEADPHONES LEVEL Adjusts the level of the signal in the stereo
headphones. This does not affect the level of the local monitor. Heed
the warning printed on the previous page regarding loud listening
levels.
MONITOR SOURCE SELECTOR A 9 way switch bank is used to
select which signal is heard in the headphones, local monitor and
displayed on the meters. This defaults to post-fader MIX2 signal with
all switches up. Press the required switch to monitor MIX1, AUX1 to 6,
or EXT IN 1(2). PFL automatically overrides the selected source.
Press a related pair of Aux switches to monitor them in stereo, for
example AUX5 on left, AUX6 on right. Press a single AUX switch to
check it in mono.
Switch priority is PFL overrides AUX1/2 overrides AUX3/4 overrides
AUX5/6 overrides EXT1 overrides EXT2 overrides MIX1 overrides
MIX2. For example you can select MIX1 as your source, then press
EXT1 to check a recording level without having to first deselect MIX1.
0 1 0
EXT1
EXT2
MIX1
ALL UP =
MIX2
AUX1
AUX3
AUX2
AUX5
AUX4
AUX6
5-6
6
4
5
2
3
3-4
1-2
1
-3
MONITOR
6
R
5
4
2
1
3
PFL
L
-12
-20
-30
-16
-9
-6
LEV
8
9
7
PRG
+ 3
0
+ 6
PFL
+ 9
+ 16
SPLIT PFL