Operating Modes - ALLEN & HEATH GL2800 User Manual

Operating Modes

In FOH mode, LR and M feed
the main PA. Groups outputs 1-
8 may be used for multitrack
recording, zone feeds and so
on, or simply left unconnected
where they are used
'subgroups' to LRM for level
masters and/or
processing.
In monitor mode Groups 1-8
and LR XLRs and
become the 10 aux
masters. Stereo Aux 9-10 is
available on the LR XLRs. M
becomes the engineer's listen
wedge AFL/PFL feed.
configures the console with 10
main stage monitors and an
engineer's output. The groups
and LRM mix are still available
via the matrix to provide yet
more monitor feeds from the 4
matrix outputs.
MATRIX EXT IN
MTX MTX MTX
IN IN IN
4 3 2
MTX OUT MTX OUT MTX OUT
4 3 2
MATRIX EXT IN
IN1
IN2
IN3
IN4
OUT 2TRK IN
L L/M
R R
MONITOR
OUT
R
GL2800 User Guide
M
OUT
(WEDGE)
TB/GEN
OUT
R
OUT OUT
(10)
as
inserted
GROUP, L, R, M OUT
electronically balanced XLR. These produce the professional standard
+4dBu when the meters read '0', and provide up to a maximum +26dBu.
inserts The L, R and M outputs typically feed the house PA system in live sound
mix mixing, or 2-track and mono recorders in studio mixing. In monitor mode,
these outputs reverse with the Aux TRS jack connections.
AUX OUT 1-10
This
balanced TRS jack operating at -2dBu line level. An internal option is
available to fit a balanced line driver IC to provide an electronically
balanced output operating at +4dBu. Note that it is not usual to require
this option as the impedance balanced standard drive provides sufficient
interference rejection when feeding balanced equipment inputs. The aux
sends are typically used to feed monitors, effects devices such as reverb
and delay, and for special mix requirements. In monitor mode, these
outputs reverse with the group and LR XLR connections.
MATRIX OUT 1-4
balanced TRS jack operating at -2dBu line level. An internal option is
available to fit a balanced line driver IC to provide an electronically
(COMMON)
MTX
balanced output operating at +4dBu. The matrix outputs are typically
IN
1
used for stereo or mono recording or broadcast feeds, delay and fill
speakers, zone feeds, additional monitors such as IEM, hearing assist
MTX OUT
1
loops and so on.
MATRIX EXT IN 1-4
TRS jack input. An external signal such as ambience mix, additional or
sub mixer, remote source, reference tone and so on may be mixed in to
each matrix. The inputs are normalled as shown in the diagram here.
This means that you can plug in just one jack (EXT1) as a common
source to all matrix, two jacks (EXT1,2) as a common stereo source to
matrix pairs, or four independent sources. This is ideal for adding mono
or stereo ambience to recordings or in-ear monitors fed from the matrix.
2-TRACK IN and OUT
inputs connect to popular recording and playback devices such as CD,
MiniDisc, computers and tape machines. Nominal line level is -2dBu.
The 2-track SEND always follows the post-fade LR mix regardless of
mode switch configuration.
monitoring a mono or stereo recording, or as a simple input for playback
of walk-in and background music. The L input normals through the R
socket for plugging in a mono source on a single jack.
MONITOR OUT
L
outputs follow the post-level monitor signal.
provided for the L and R signals. Use these to feed local speaker or other
monitor systems.
SYS-LINK V2 OPTION
The GL2800 Sys-Link V2 (version 2) input/output option kit is available
from Allen & Heath. Refer to OPTIONS later in this guide.
AUX AUX AUX AUX
(R) (L) (GRP)
10 9 8 7
L 8 7 6
GRP GRP GRP
(9) (AUX) (AUX) (AUX)
The main console mix outputs are on
Each aux send is available on an impedance
Each matrix output is available on an impedance
Each matrix has an unbalanced 0dBu line level
Unbalanced TRS jack outputs and TRS
The 2-track RETURN can be used for
These impedance balanced line level TRS jack
Blank plates are fitted here as standard.
AUX AUX AUX AUX
(GRP) (GRP) (GRP) (GRP) (GRP)
6 5 4 3
5 4 3
GRP GRP GRP GRP
(AUX) (AUX) (AUX)
Separate sockets are
AUX AUX
(GRP) (GRP)
2 1
(GRP/AUX REVERSE)
2 1
GRP
(AUX) (AUX)
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