Cadac CDC four - Manual (Page 42)

42
Revision 1 2012-13 CDC FOUR
Levels within VCA groups
As with all layers, when the ST CHNS VCA layer is selected, faders 9 to 16
immediately move to their correct positions. If no adjustment of VCA master levels
have been made, this position will be at the 0 dB mark. The implication of this
is that simply assigning a channel to a VCA group does not alter its signal level
anywhere in the mixer. The level in the mix may now be adjusted in two places –
by the channel’s own fader or by the VCA master. The fader positions of the two
faders effectively “add” to define the overall signal level. Thus if the channel fader
is at -6 dB and the VCA fader is set to -10 dB, the level of the channel in the mix
will be the same as it would if the channel fader were set to -16 dB without any
VCA assignment being made.
The relative levels of all the channels assigned to any one VCA group remain
unchanged; adjusting the VCA master alters the level of the whole set of
channels without disturbing their inherent mix. A common application is to assign
all the channels being used to mic a drum kit to a VCA group after a satisfactory
balance of the kit has been made. The VCA master fader will then alter the level
of the whole kit in the mix, without altering any the internal balance, or any stereo
imaging.
VCA Group Muting
A VCA group may be muted by pressing the MUTE button above the VCA master
fader. This mutes all the channels assigned to the group. A corresponding virtual
MUTE button is provided on the TFT VCA page. The individual channels’ MUTE
buttons – both the physical ones and the on-screen virtual buttons – illuminate to
confirm this.
Note that the SOLO button has no function for a VCA group.