Allen&Heath GL3000 - Manual (Page 11)

GL3000 U SER G UIDE ISS .1 11
AUX 1-4 feed balanced XLR outputs capable
of driving long cable runs and include
INSERT points. These are normally used to
provide MONITOR SENDS to the
performers and stage crew, although they
can of course be used for additional effects.
Plug a graphic EQ into the insert to 'ring out
the monitor' (tune) to the stage acoustics to
minimise feedback. The effect of the EQ can
be listened to using the aux master AFL
system. Monitor sends are usually set pre-
fade, although some sources such as radio
mics are often set post-fade to avoid 'dressing
room' talk spill. Note that the stereo channel
aux sends are the mono sum of left and right.
AUX 5-8 feed jack outputs and are normally
used to provide EFFECTS SENDS to
external devices such as reverb and delay
effects units. Effects sends are set post-
fade so that the amount of effect (wet signal)
is always relative to the position of the fader
(dry signal). Adjust the amount of effect
required for each channel using its AUX
control. The effect is returned to the mix
through another channel, usually the stereo
return described later in this guide.
Note that AUX5-8
feed XLR outputs
with inserts as does
1-4 when GRP/
AUX REVERSE is
pressed in the
master section.
POST-FADE sends are always post-
EQ, post-mute. PRE-FADE sends
are set post-EQ, post-mute as
standard, but may be internally reset
to be pre-EQ, pre-mute or post-EQ,
pre-mute. Each aux may be internally
set to pre or post-fade permanently
rather than follow the panel switch.
8 AUX SENDS provide ample
feeds for foldback monitors
and effects. These are in two
groups of four each with a
POST/PRE switch to source
the sends either pre-fader or
post-fader.
8 AUX SENDS
Pressing PFL automatically interrupts the headphone monitor signal to let you listen to
the channel pre-fader signal without interrupting the main console outputs. The signal level
is shown on the LR monitor bargraph meters, and on the PFL meter in the optional meterpod
if fitted. In this way each sound can be correctly lined up and checked at any time.
MUTE switches the signal off when pressed regardless of fader position. Muted
channels are indicated by red LEDs. The meter continues to indicate pre-fader
channel activity.
PAN positions the channel signal between L (odd) and R (even) of the outputs
selected on the L-R and group 1-8 ROUTING switches. This lets you position
the sounds within a stereo image. In this way subgroups may be set up in mono
or stereo to feed the main L-R mix.
A 100mm long throw FADER provides +10dB boost above the normal '0' operating
level.
A 3 LED CHANNEL METER system shows signal activity at all times. The green
SIG LED indicates signals greater than -20dBu, yellow '0' represents normal
operating level, and red PEAK warns of potential overload 5dB before clipping.
Set the channel so that the meter averages '0'. Back the gain off if the red peak LED
flashes.
Normal fader
position