Allen&Heath GL3000 - Manual (Page 14)

14 GL3000 U SER G UIDE ISS .1
TALKBACK
LAMP
Plug in a 12V
gooseneck lamp to
provide illumination
of the control panel.
This should be a
BNC connector
type.
Individual jack sockets are provided for
left and right inputs (returns) from and
outputs (sends) to a stereo recorder such
as a DAT or cassette machine.
Alternatively the RETURN may be used
for stereo intermission replay from a CD or
similar to the main mix by pressing TO L-
R. An LED warns that replay is on.
The SEND may be used for recording the
performance in stereo, to feed alternative
speakers, drive an induction loop hearing
aid system, feed a stereo broadcast etc.
The send is connected post L-R faders as
standard.
Separate send and return level controls
adjust the signal to the required line level
and sensitivity. The console can work
with both high (+4dBu) and low (-10dBV)
level equipment.
MATRIX
Balanced XLR input for a gooseneck (or
cable) microphone for the operator to
talk to the aux sends (foldback monitors).
+48V may be enabled by means of an
internal link for microphones which
require phantom power.
Talk to the required aux mix by pressing
and holding the momentary talk switch.
Talk to several at the same time by holding
down a combination of switches.
The ability to talk to individual auxes is
important when using the console for
stage monitoring and cueing the
performers.
Two matrix outputs A and B are provided. These are additional outputs on jack (balance option available) controlled
through 60mm smooth travel FADERS, and with AFL monitoring to check the post fader signal. The matrix mix is created
from the groups 1 to 8, L and R by adjusting the MTX level controls. These signals are fed post their respective faders.
Note that in 'MONITOR MODE' (REVERSE selected) the matrix is still fed from the groups (now routed via the aux
masters). External inputs to the matrix are available from the adjacent stereo returns.
The matrix outputs satisfy a host of applications. Traditionally the matrix has been used to feed additional speaker
systems such as auditorium balcony speakers. These are fed through delay units to compensate for acoustic delay
through the distance from the main speakers. Here the balance of the mix may be slightly different from the main speakers,
for example vocal light to keep the vocals nearer the stage. Adjusting the balance of the groups to the matrix achieves
this. Another example is live sound recording where the PA mix may be necessarily lacking in bass due to the acoustic
output of the orchestra or 'backline'. Compensate for this by recording from the matrix with the group feeds adjusted
for an even recording balance.
2-TRACK