Allen&Heath ML4000 USER GUIDE - Manual (Page 25)

ML4000 User Guide 25
Internal Link Options
Several link options are available to satisfy user
preferences. These require removal of the console
base panels and replugging of 2way jumpers on the
circuit boards. It is not necessary to remove
assemblies from the console. To avoid damage to
the internal assemblies this work should be carried
out by competent technical personnel.
Pre-fade Source. The source for the pre-fade aux
sends may be changed by repositioning jumper
links on each mono and stereo channel. The
default factory setting is pre-insert, pre-EQ, post-
mute. This is usually preferred when mixing
monitors from front-of-house. Select the source as
pre-insert, pre-EQ, or post-EQ by setting one
jumper. Select pre or post mute by setting another.
Set pairs of links on the stereo channels to affect
left and right signals.
Direct Output Source. The default factory setting
is post-fade. This can be changed to pre-fade.
Pre-fade follows the source as described above.
An additional option sources the output from the
AUX1 send control. This provides a post-fade
direct output with level trim. If preferred, the
channel feed to the AUX1 rotary master can be
disabled so that adjusting the direct output level
does not feed the mix. Note that this does not
affect the AUX1 send to the fader master when aux
mode is selected. Select the source as pre-fade,
post-fade, or post-fade with AUX1 trim by setting its
jumper. Set another jumper to turn the AUX1 feed
to the rotary master on or off as required.
Using the GRP/AUX Sends
Configure the underpanel mode switches above the
master faders according to the number of fader
controlled audio groups you need. This is typically
fewer on a VCA equipped console where it is
determined by the number of group processors you
want to insert or the number of groups needed to
feed the matrix, rather than the group level control
required. The remaining output faders can be
configured as masters for the related aux sends.
The associated groups swap with these auxes and
are available on their rotary masters.
Audio Groups. These let you route channels to
independent outputs, mix into the matrix, or insert a
common signal processor to affect more than one
signal, for example a compressor on a vocal group.
8 Groups are available. Route the channel signal
by pressing one or more group switches. For mono
groups set the PAN control to odd or even
according to the group you wish to feed. For stereo
position the PAN control according to the stereo
image required.
Effects Sends. Use post-fade aux sends to feed
effects processors such as reverb. This ensures
that the balance between the dry and effect signals
is always maintained regardless of channel fader
position. The output of the processor should be
returned to the mix through another channel,
typically a stereo input.
Monitor Sends. Use aux sends to provide
independent monitor mixes to the performers, MD,
backstage crew and so on. These may feed stage
wedges, side fills, hotspot speakers, headphones
and in-ear monitors, and may be mono or stereo.
Aux 9-12 have full featured fader masters. For
similar aux 1-8 control with faders, meters, inserts
and automation configure the master section
underpanel mode switches as required.
Select pre-fade when mixing monitors from front-of-
house so that the main mix does not affect the
monitors. However, you may prefer to set some
channels post-fade, for example to avoid backstage
pickup when working with radio microphones.
Select post-fade when using the console for
dedicated monitor mixing so that the channel fader
becomes the master for that signal to all mixes.
Up to 2 stereo monitors may be configured by
selecting the channel STEREO switches. This
provides separate level and pan controls and is
ideal for in-ear monitoring.
Special Sends. The aux sends can be used for
any application where an independent mix is
required. Select pre or post-fade and mono or
stereo as required.
PRE-FADE MUTE
PRE-FADE SOURCE
DIR OUT SOURCE
AUX1 TO
FADER
CONNECTORS
MONO CHANNEL
POST-EQ
PRE-EQ R
-
POST-EQ
PRE-EQ L
-
POST-MUTE
PRE-MUTE
PRE-FADE MUTE
PRE-FADE SOURCE
PRE-FADE SOURCE
FADER
CONNECTORS
STEREO CHANNEL
ROTARY MASTER
RIGHT
LEFT
AUX1>ON
AUX1>OFF
AUX1>DIR
POST-FADE
PRE-FADE
POST-EQ
PRE-EQ
PRE-INSERT
POST-MUTE
PRE-MUTE