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142Control Surfaces Support Guide for Logic Pro
Mackie C4 modifier buttons in Logic Pro
The four buttons in this area are similar to those found on your computer keyboard (but are
independent of the keyboard modifiers). Many Logic Pro functions behave differently when
one or more modifier keys are pressed in conjunction with another key or mouse click. This
also applies to the C4 control surface.
Here is a generic description of the modifier button functions:
• SHIFT: Switches other buttons to an alternate function.
• OPTION: While held down, parameters are set to the minimum, default, or maximum
value when edited with a V-Pot.
• CTRL: Disables the Group function.
• CMD/ALT: While held down, parameters are edited in Fine (high-resolution) mode when
a V-Pot is turned.
Mackie C4 Parameter, Track, and Slot buttons
in Logic Pro
The buttons at the lower right of the C4 are used to access channel strips, channel strip
elements, and parameters.
• BANK Left and BANK Right buttons: Shifts the parameter display by one page (a group
of parameters) in particular views.
• SINGLE Left and SINGLE Right buttons: Shifts the parameter display by one parameter
in particular views.
• TRACK L and TRACK R buttons: In Mixer view, TRACK L and TRACK R shift the fader
bank left or right by the number of channel strips in the control surface group. For
example, if you have two C4 units in a control surface group, the view shifts by 16
channels.
Simultaneously pressing TRACK L or TRACK R and OPTION moves to the first or last
group of channels in the project (or parameter pages, if in an edit mode). For example,
if you are viewing the first 8 channels (of 64) in the fader bank, pressing OPTION and
TRACK L or TRACK R will show the last 8 channels in the fader bank (channels 57 to 64).
In Channel view, TRACK L and TRACK R select the previous or next channel.
In Channel view, simultaneously pressing TRACK L or TRACK R and SHIFT moves to the
first or last group of channels in the project (or parameter pages, if in an edit mode),
but only affects the Split Lower group if Split mode is active.
• SLOT UP and SLOT DOWN buttons: Selects the required EQ, Send, or Insert slot.