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138Control Surfaces Support Guide for Logic Pro
Mackie C4 function buttons in Logic Pro
This section outlines the FUNCTION buttons at the lower left of the C4 control surface.
• SPLIT button: Splits the C4 rows as follows: 4/0, 1/3, 2/2, and 3/1. This is known as a
Split Edit, and allows you to simultaneously edit two separate sections of a plug-in, or
even two different plug-ins.
Split Edit is also possible across multiple C4 units. For example, with two C4 devices,
pressing the SPLIT button offers the following split modes:
• 1/7 (Split Upper is the top row of the first C4 unit; Split Lower is the bottom three
rows of the first unit and all rows of the second C4 unit. LED 1/3 is lit.)
• 2/6 (Split Upper is the top two rows of the first C4 unit; Split Lower is the bottom two
rows of the first unit and all rows of second C4 unit. LED 2/1 is on.)
• 3/5 (LED 3/1 is on.)
• 4/4 (All three LEDs are on.)
• 5/3 (All three LEDs are on.)
• 6/2 (All three LEDs are on.)
• 7/1 (All three LEDs are on.)
• LOCK button: Turns Track Lock on or off. When LOCK is enabled, selection of a different
track in the Tracks window does not switch the current track/channel selection on
the C4.
• SPOT ERASE button: Unassigned.
C4 Assignment buttons
Overview of Mackie C4 Assignment buttons in Logic Pro
The Assignment buttons switch between “overlay” and normal Views. The parameters
assigned to the V-Pots/V-Select buttons change accordingly when an overlay mode
is activated.
• MARKER button: Switches between Marker overlay (see C4 Marker overlay) and normal
Views (see
C4 views).
• TRACK button: Switches between Track overlay (see
C4 Track overlay) and normal
Views (see
C4 views).
You can access alternate Mixer View options by holding down the TRACK button. This
displays a further submenu in the lower LCD, allowing you to view particular channel
types:
• V-Select 25 switches to MIDI Channel view.
• V-Select 26 switches to Input Channel view.
• V-Select 27 switches to Audio Channel view.
• V-Select 28 switches to Software Instrument Channel view.
• V-Select 29 switches to Auxiliary Channel view.
• V-Select 30 switches to Bus Channel view.