Rev. 5 – Jun 2020 Page 13 of 91
The Master uses a main Fader (A.14) to set the system
level output, featuring also a dedicated stereo LED VU-
meter [-6dBu, −1dBu, +4dBu, +7dBu, +10dBu].
The outgoing signal can be picked up from the left
(A.12) and right (A.13) main output.
THE PFL FUNCTION
PFL (PreFader Listening) allows the musician to send to the
Headphones output any channel, group or the Aux input
when their main fader is at 0, in order, for instance, to
preview it before it is mixed.
PFL is achieved through two operations: pushing the
PFL button (C.4) on the Channel or Group modules or on
the Aux input (the blue LED will light up) and adjusting
the PFL level through the PFL Blend knob (C.5).
PFL previews the Channel’s sound before the main fader:
this means that its amplitude will be determined by the
Red VCA level, which means that the the green and yel-
low Sends cannot be PFL’d from the Channel.
This is when the Group PFL comes in handy: in order to
pre-listen the effect sends and returns before sending
them in the mix, you can mute the Group’s and activate
its PFL button: from now on, everything that is managed
by the Group will be safely pre-listened without affecting
the main mix, including individual Channels’ Main
Fader settings, sends and returns.
Please note that Safe Solo overrides PFL: this means that
you can perform Safe Solo in when a Group is in PFL, but
you cannot PFL a channel whose Solo in Place button is
off when its Group is in Safe Solo mode: the reason is that,
as explained above, the Safe Solo works as a “Mute region”,
i.e., muting all the unselected channel’s red VCAs.
6 CGM MIXER TIPS
STEREO INPUTS
The returns on the group manage audio signal in the
same way as the mono input on each Channel. This means
that they can be creatively used as actual auxiliary stereo
inputs, not limited to the effect return. In this case, you
will gain two additional stereo VCAs for your mix, but
you will lose control over the effects section.
MORE THAN 2 SEND/RETURNS PER CHANNEL
In case you have more than one Group on your CGM
system, you can use the direct out of a channel linked to
a Group to patch it to the mono input of another Channel
linked to another group.
In this way you will use the RED VCA of the original
channel, and its CV, to shape the amplitude of your sig-
nal, then on the second, add the 3rd and 4th parallel Send
to it, taking advantage of the second group.
SERIAL SEND/RETURN (AND FEEDBACKS)
Since the two effect Send/Returns are in parallel, it is vir-
tually impossible to have two effects (say, reverb and de-
lay) in series.
There is, however, a simple workaround that lets you
achieve this function, with additional CVs over the differ-
ent returns: just patch the delay return to a Channel linked
to the same group and send it back into the reverb: this
will allow independent controls over delay, reverb and
both. On the other hand, if the delay send of this last
Channel is set to a high value, it will cause feedbacks.
The two sends are patched with a delay and a reverb,
respectively. You can bypass this setting the return of the
delay on a channel linked to the group of the delay and
reverb, and gradually increase the amount of reverb send
on that signal too.
Be aware that adding some delay to the channel of the
delay return will result in undesired feedback, so be ex-
tremely careful.
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