Mackie HUI DSP controls in Logic Pro

The table outlines the DSP controls and their assignments.

Note: A modifier button, such as SHIFT, below a button description indicates that the button has an alternate use while the modifier is held down.

Control	Modifier	Assignment
ASSIGN		—
COMPARE		Switches DSP display between “track name/parameter name” and “parameter name/parameter value” modes.
BYPASS		Switches the bypass state of the plug-in being edited.
DSP Select 1 to 4		Assignment Pan mode: DSP Select 1 resets pan or surround angle. DSP Select 2 resets surround diversity. DSP Select 3 resets surround LFE (level). DSP Select 4 resets the Spread parameter. Assignment Send mode: Activates or deactivates Sends 1 to 4, or mutes 5 to 8. Effect Assign mode: Confirms Insert 1 to 4 or 5 to 8 effect selection, selects this Insert slot, and enters Effect Edit mode, showing the parameters of the chosen effect. Effect Edit mode: Sets parameter to the default value, or turns “switching” parameters on/off.
DSP V-Pots		Assignment Pan mode: DSP V-Pot 1 controls pan or surround angle. DSP V-Pot 2 controls surround diversity. DSP V-Pot 3 controls surround LFE (level). DSP V-Pot 4 controls the Spread parameter. Assignment Send mode: Controls Send 1 to 4, or 5 to 8 Levels. Effect Assign mode: Assigns effects to Insert slots 1 through 4, or 5 to 8. Effect Edit mode: Controls the selected effect parameter.
INSERT/PARAM		Switches between Effect Assign and Effect Edit modes.
SCROLL		Effect Edit mode: Shifts parameter display by the number of DSP V-Pots in the control surface group (usually four).
	CMD/ALT/FINE	Effect Edit mode: Shifts parameter display by one (parameter).

Download the guides:

Logic Pro User Guide: PDF

Logic Pro Instruments: PDF

Logic Pro Effects: PDF

Control Surfaces Support Guide: PDF

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Control Surfaces Support Guide for Logic Pro