Allen&Heath GL4800 USER GUIDE - Manual (Page 24)

24 GL4800 User Guide
GROUP
MATRIX MASTER - Controls the output of the matrix mix. Adjust LEV to
trim the output level to match the connected equipment. ON switches the
output on or off, ideal for checking the effect of individual or combinations of
speakers in a multispeaker system. AFL lets you monitor the signal post
level trim, post insert, but pre ON switch.
OUTPUT REVERSE - This underpanel mode switch reverses the matrix
output jack with the related aux output XLR and switches the aux insert out of
the aux signal path and into the matrix path. This gives the matrix a balanced
XLR for driving the long cable runs to the amplifier racks, and an insert for
plugging in processing devices such as graphic EQ and delay units. You
could also use this to provide aux outputs on jack, often more convenient
when connecting to some of the lower cost effects devices. Note that only
the connectors are reversed. The matrix and aux control sections are not
affected.
TRIM ENABLE - With this underpanel mode switch in the normal up
position the group output is fed post fader to the output XLR. Press the
switch to insert a level trim control in the group output signal path. This does
not affect the level of the subgrouping to LR and M. You can also select
whether the group output is sourced pre or post the group fader. This facility
is most useful when using the group outputs for recording. The recording
can be adjusted independent of the subgrouping and faders.
METER - 12 segment, 3 colour peak reading meter. Each
meter can be switched to monitor either the main fader signal
(normally group) or the small fader signal (normally aux). The
switch does not affect the optional VU meterpod which always
follows the main fader signals.
AUX MASTER - Provides fader control of the aux send output.
Includes a pre fader aux meter to display signal activity and
warn of potential mix overload. AFL monitors the post insert,
post fader signal. You can listen to the effect of graphic EQ
typically inserted in a stage monitor signal path. The MUTE
switch is part of the console mute grouping and automation
system and includes preview and safe.
GROUP REVERSE - Press this underpanel mode switch to
reverse the aux and group control sections. This configures
the group for stage monitor operation giving you auxes on the
main faders. The groups are still available on the small faders.
The aux and group output connectors are not affected.
TALKBACK TO AUX - This switch enables talkback to the
related aux mix. When selected, pressing the large TALK
switch routes talkback to the aux. When not selected, pressing
TALK does not affect the aux.
AFL
SAFE/PREVIEW
MUTE
TB TO
AUX1
PK!
+6
0
SIG
10
20
30
10
0
5
5
GRP REV
MTX
TO AUX1
1
OUT REV
-15
-30
-20
-10
-5
0dB
AFL
ON
-30
-20
-15
-12
-9
-6
-3
0
+3
+6
+9
+16
LEV
FOLLOW
SML FADER
8
PRE
POST
-15
-30
-20
-10
-5
0dB
OUTPUT
TRIM
ENABLE
GRP
8