Allen&Heath GL2800 - Manual (Page 31)

GL2800 User Guide 31
Create IEM Mixes with Ambience In Monitor mode the
matrix continues to be fed with the 8 groups, L, R and M mixes. You
can use these to create additional, independent monitor mixes.
Together with the auxes these give you as many as 14 mixes. Create
mono or stereo in-ear monitor feeds using single or paired matrices,
for example MTX1-2 and 3-4. You could use LR to start with a basic
stereo mix, then add up to eight instrument or ‘more me’ groups. Add
ambience using a pair of jack leads to patch the stereo channel MICs
into matrix EXT IN 1 and 2. With nothing plugged into EXT IN 3 and 4
the two mic signals are automatically linked across making the same
stereo ambience available to both IEM mixes. Alternatively you could
use an outboard reverb effects processor fed from a post-fade aux
send to create the ambience. Use the channel faders and pan to
create the basic stereo mix. Remember to set the other monitor aux
sends to pre-fade.
Using the Matrix to create a Recording The band may be
acoustically loud in the room, and you need only mix vocals and some
of the instruments into the PA to get good clarity and overall balance
for the listeners. If you recorded the console main output you would
be disappointed when you got home and listened to the result. For
example, there may be strong voices, acoustic guitar and flute, but the
drums, bass and electric guitar may be low. This is because you did
not need much of these backline instruments in the PA mix. However,
if you use the matrix to feed the recording you could start with the
main LR (PA) mix, then turn up the drum and guitar groups to
compensate for the lack of these in the house system. You could also
add in ambience as described above to give the recording more life
by including audience reaction and natural reverberation.
Recording with the GL2800 The console is equally at
home recording live or in the project studio. The studio grade
preamps produce an accurate and noise-free recording. Create a
stereo recording from the main LR output, or from a pair of matrices as
described above if recording and mixing live at the same time. To
record to multitrack use whichever combination of groups, matrix,
auxes and channel direct outputs is most convenient. The direct
outputs are set pre-fade as factory default. This setting means that the
recording is not affected by your live fader and EQ changes. Note that
you can swap internal jumpers to change this to post-fade if you
prefer. Set the channel pre-EQ switches as required. Remember to
use some ambience microphones to record the audience and venue
atmosphere too.
Pre/post Fade Aux Settings The aux sends are switched pre
or post fader using three PRE switches on every channel. One switch
affects auxes 1-4, another auxes 5-8, and one for stereo aux 9-10. It is
usual to set auxes pre-fade if you are mixing monitors from FOH. Set
post-fade for auxes used as effects sends, zone feeds, aux-fed subs
and so on. If you are using the console to mix monitors only then the
auxes are typically set post-fade so that the channel fader becomes
the source master to all monitors. In this case start with all channel
faders set to ‘0’.
There are times when you may want some monitor sends set post-
fade while most are set pre-fade, for example mixing monitors with
radio mics and cued sound effects. Here, it may be better for the
radio mics to follow your fader movements so avoiding off-stage chat
or noise in the monitors. For this reason we believe it is important
that channel rather than global mix pre/post switching is provided.
7
INSERT INSERT
1
INSERT
2
INSERT
3
INSERT
4
INSERT
5
INSERT
6
8
AUX AUX
7
AUX
6
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
STEREO LINE IN
R
L/M
MIC OUT
(BREAKPOINT)
STEREO LINE IN
R
L/M
MIC IN
MIC OUT
(BREAKPOINT)
MIC IN
A
DC POWER IN
ALLEN
USE ON
GRP 2 (AUX) (AUX) GRP (AUX) GRP (AUX) GRP (AUX) GRP (AUX) GRP 3 4 5 6 7 8 (AUX) 1 GRP
LAMP
TIP
RING SEND
RETURN
INSERT
(L) (R) AUX
9
MATRIX EXT IN
(GRP) (GRP) (GRP) (GRP) (GRP) (GRP) (GRP) (GRP)
(COMMON)
(GRP/AUX REVERSE)
3
MTX OUT
4
MTX OUT
2
MTX OUT
1
MTX OUT
MTX MTX MTX MTX
IN IN IN IN 3 4 2 1
ST1 IN ST2 IN ST3 IN ST4 IN
L/M
R
L/M L/M L/M
RT
L
INSERT
8
INSERT
+6 OO
OO +6
7
AUX
AUX
8
6
AUX
AUX
5
+6 O O
O O +6
PRE
POST
AUX
4
3
AUX
O O +6
O O +6
PRE-EQ
AUX
AUX
2
1
O O +6
PRE-EQ
OO +6
AUX
PRE
POST
PRE
POST
PAN
L R
=
9-10
STEREO