20
GL3800
User Guide
The GROUP / AUX Masters
AUX 1-8 MASTERS
Each aux mix has a master level control that
adjusts the output level to match external equipment, or trims the
monitor, effect or other send without affecting the mix balance. Up to
+10dB boost is available above the normal 0dB position. Note that
this becomes the group master in monitor mode.
AUX AFL
Press AFL to listen to the post-level aux mix in the
headphones and local monitor without affecting the main outputs.
The console monitor meters are interrupted with the aux (group)
signal. The yellow indicator lights to show that AFL has been selected
on the master. Use AFL to check the signal being sent to the
monitors, effects or other destination. AFL is pre-mute so that you can
check the signal before sending it to its destination.
REV mode switch
These switches reverse the function of the
group and aux masters, the heart of the dual functionality pioneered
by Allen & Heath. They are recessed to prevent accidental operation.
Use a pen or pointed object to set their position. In the up position
(flush with the panel), the group is controlled by the fader and the aux
by the rotary master. This is typical for FOH mode where the faders
are used for subgroups feeding the main stereo mix. When pressed,
the aux uses the fader as the master and the group is moved to the
rotary control. The aux mix is now presented to rear Group XLR
complete with insert. The group mix appears at the Aux TRS jack.
This is used for monitor mode where the auxes are the main mix
feeding the stage monitors. You can select any combination for the
FOH and monitor mode, for example, just four giving you 4 fader
subgroups for level control, 4 groups on rotaries for inserting effects,
4 monitor sends on faders, 4 effects sends on rotaries and main mix.
Note:
The groups always feed the matrix and the subgroup controls
regardless of mode. This means the group mix can still perform a
useful function when the console is configured in monitor mode.
GRP to LR/M
Press to route the post-fade group signal to L-R
and/or M. These provide sub grouping to the main mix for grouped
level control and inserted processing.
PAN
Positions the group signal between L and R in the stereo mix
when the GRP TO LR switch is pressed. Using pan you can create
mono or stereo groups positioned as you require in the main mix. For
stereo grouping, set the odd group pan fully to the left, and the even
group pan fully to the right. Note that the group mix always feeds
these subgroup controls regardless of FOH or monitor mode selected.
METER
A 4 LED bar meter displays the post-fade group signal
(FOH mode), or aux signal (monitor mode, REV pressed).
MUTE
When pressed the group (aux) signal is turned off. This
affects the feed to the output XLR, LR, M and matrix. The red indicator
lights when the channel is muted. Mute does not affect the AFL
monitoring.
GROUP AFL
Press AFL to listen to the post-fade, pre-mute group
mix in the headphones and local monitor without affecting the main
outputs. Note that this becomes the aux mix in monitor mode. The
console monitor meters are interrupted with the group (aux) signal.
GROUP FADER
A 100mm dual rail fader controls the group mix
output level. Note that it becomes the aux mix master in monitor
mode (REV pressed). The fader pr10dB maximum boost
above its normal unity gain 0dB position.
MUTE
SIG
0
+6
PK!
GRP1
L
PAN
R
TO LR
=
GRP1
TO M
REV
O
O
AUX
1
+10
AFL
0
