Rev. 5 – Jun 2020 Page 12 of 91
they are the Mute button (C.1), which mutes all the chan-
nel’s VCAs, the Solo in Place (C.2), which works only
when the Safe Solo function in the connected Group is
engaged (C.3, see below §4.5) and the Stereo PFL (Pre-
Fader Listening, C.4) accessible via the Master PFL
Crossfader (C.5, see below §5.1).
The Solo in Place selects the channels that are kept active
when the group is in Safe Solo mode, while the Stereo PFL
selects the channels that will be sent to the PFL circuit on
the Master module.
4 GROUP
SENDS
The Send jack socket (B.4) outputs a mono signal which
is the sum of all the signal processed for that send by each
Channel connected to the Group.
RETURNS
The Return section is divided in two specular columns,
the left one for the yellow return, the right one for the
green return.
The first two rows from the top are the Return inputs
(B.5, B.6). They are semi-normalled, meaning that they
can work either in stereo (when two cables are plugged)
or in dual mono (when only one cable is plugged into any
of the two inputs). When using two cables for stereo re-
turn the top jack is the left and the bottom one the right.
As soon as an audio signal is connected, it is routed to
the stereo return: each Return section is equipped with its
own stereo VCA, which is identical to the ones used in
the red, yellow and green sections of the Channel module.
The CV inputs (B.8) and accept both signals with a
range 0÷5V or 0÷10V, allowing any creative use of the
stereo effect returns. When a CV is patched to the jack
socket VCA input (B.8), then the Level pot (B.7) attenuates
that CV, while when nothing is patched to the jack
socket, the pot acts as a Level control for the VCA (i.e. the
return stage).
GROUP OUTPUT
The top jack sockets (A.9, A.10) are used for the Group
Output: it is a stereo output and can be configured to out-
put the sum of the signals from the returns only or the
sum of the signals from the returns and the connected
channels. Please refer to the chapter about Group Jumper
Configuration to setup properly the group module.
FADER AND OTHER CONTROLS
The Group Fader (A.11) sets the group final volume as in
any mixer. This is the volume of the sum of the connected
channels and the returns. It comes coupled with a pair of
peak LEDs on the top left and right of the knob.
Below that control there are two buttons and a switch
with their relative LED: from left to right they are the
Group Mute (C.1), for all the connected Channels and
send/return signals; the Safe Solo switch (C.3), which en-
ables the Solo In Place function on each of the connected
Channels when moved to the left, and the Stereo PFL
(C.4), accessible via the Master module for all the con-
nected Channels and Send/Seturn signals.
THE SAFE SOLO FUNCTION
The Solo function allows the musician to isolate certain
channels in the mix, thus muting all the remaining ones.
It is achieved through two operations: pushing the Solo in
Place button on the Channel module and moving the Safe
Solo switch on the Group module: the Solo in Place button
will determine which channels will be soloed (which will
be marked with the white LED) and which ones muted;
the Safe Solo switch will put this selection into practice (and
the group too will display a white LED). It is called Safe
Solo because it safely allows you to select the channels you
want to solo in advance, without affecting the ongoing
performance.
Please note that if you activate the Safe Solo without hav-
ing selected at least one channel through its Solo in Place
button beforehand, all the group will be muted!
The Safe Solo is different than the Mute function, not only
because it allows to mute many channels at the same
time, but also because the Mute works over the channel
VCA, thus muting the sound at the source, while the Solo
in Place works over the channel Fader. In this way, the Solo
In Place will mute the channel, while still allowing the sig-
nal to flow through all the parts set to work in Pre-Fader
Mode, such as Direct Output (A.2) or Effect Sends (B.2).
5 MASTER
The Master module is the last step in a CGM setup. It
adds a lot of functionality to the CGM system like the
Auxiliary Stereo Input, the headphones section with the
management on the PFL, the sum and connection of mul-
tiple groups and additional ~6dB of gain.
The Auxiliary input (A.15) uses a stereo 3.5 mm jack
socket with dedicated potentiometer to set its gain and a
PFL button.
The Headphones section is based on a stereo 3.5 mm jack
output (A.16) with two potentiometers: the top one (C.5)
blends the main out (white) and the PFL signal (blue),
while the bottom one (A.17) sets the Headphone volume.
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