Allen&Heath GL4000 SERVICE MANUAL - Manual (Page 18)

ALLEN & HEATH Section A - 13 L4DSM2
MONO CHANNEL
Set individual aux sends to be permanently pre-fader or post-fader rather than switched. Re-position wire links. Set the
pre-fade aux sends to be pre-EQ rather than post-EQ. Re-position a wire link. Set the pre-fade aux links to be pre-mute
rather than post-mute. Re-position a wire link. Disable +48V phantom power so that the panel switch has no effect. Cut
out the wire link.
INTERNAL LINK OPTIONS
The GL4000 is configured to satisfy most of the applications that are likely be encountered. However, the following
internal link options are offered for those applications that may require alternative settings. These options require access
to the internal circuit assemblies and resoldering of circuit board links. This work should be carried out by technically
competent personnel. Further information is available in the separately available service manual and from your Allen
& Heath agent.
STEREO CHANNEL
Set individual aux sends to be permanently pre-fader or post-fader rather than switched. Re-position wire links. Set the
pre-fade aux sends to be pre-EQ rather than post-EQ. Re-position 2 wire links. Set the pre-fade aux links to be pre-mute
rather than post-mute. Re-position a wire link. Disable +48V phantom power so that the panel switch has no effect. Cut
out the wire link.
TALKBACK MIC +48V
Disable +48V phantom power from the TB mic input XLR. Remove a jumper link (fit on 1 pin to keep in console).
AUX1 AUX2 AUX3
EQ
PRE-MUTE
POST-MUTE
POST-EQ
PRE-EQ
POST-FADE PRE-FADE
SWITCHED
MONO INPUT
ENABLE
+48V PHANTOM POWER
PRE-FADE AUX OPTIONS
AUX1 AUX2
EQ
POST-EQ
PRE-EQ
POST-EQ
PRE-EQ
L R
POST-FADE PRE-FADE
SWITCHED
PRE-MUTE
POST-MUTE
STEREO INPUT
PRE-FADE AUX OPTIONS
ENABLE
+48V PHANTOM POWER
TB MIC IN
PHANTOM POWER
+48V ENABLE
TALKBACK MIC
TALKBACK