Specifications

Chapter 3: Mackie HUI Control Surface 43
The channel faders are used for level control of
disk tracks, master faders, auxiliary inputs, and
MIDI tracks. Gain calibration ranges from infin-
ity (bottom of fader travel) to +6 dB (top of fader
travel). The HUI channel fader tapering scheme
provides resolution of 8.8 dB per MIDI value in
the –60 to –70 dB range, and 2.5 dB per MIDI
value in the –70 to –100 dB range. This results in
smooth fade outs to silence at low level.
CTRL/CLUTCH “Clutch” Mode with Faders
To disengage faders from any Mix groups, hold-
ing down the CTRL/CLUTCH switch. After re-
leasing the CTRL/CLUTCH switch, the fader
obeys group behavior again.
Moving Grouped Faders
The first fader in a mix group touched in any
single mix operation becomes the group master.
When the group master is established, faders
that are in the same mix group and not concur-
rently touched will also move in a relative fash-
ion. However, faders that are in the same mix
group and concurrently touched are tempo-
rarily disengaged from the group, and will move
independently of the mix group. Once a fader
that is temporarily disengaged is released, it will
resume following the mix group master’s move-
ments.
When the group master is released, if there are
any faders in the mix group that are concur-
rently being touched, the fader that was
touched earliest in time becomes the new group
master. Subsequent moves of this new group
master will cause all other untouched faders in
the mix group to follow.
Channel Scribble Strip LED Display
The scribble-strip LED display shows an abbrevi-
ated version of the channel name that appears
in Pro Tools. In certain cases during edit opera-
tions, the scribble strip temporarily displays a
parameter name or value, and then reverts to
the channel name.
The channel scribble strip also displays the fol-
lowing information:
Automation Status To display current automa-
tion mode for the channel, press the channel
strip AUTO switch, or the master AUTO switch
in the STATUS/GROUP switch matrix.
Group Membership Status To display the Group
ID for the channel, if any, press the GROUP
switch in the STATUS/GROUP switch matrix.
Global Disk Track Monitor Status To display
whether Pro Tools is in “Auto Input” or “Input
Only” mode on all channel scribble strips, press
the MONITOR switch in the STATUS/GROUP
switch matrix.
Channel Strip Input Source To display the cur-
rent input source for all channel strips, press the
master INPUT switch in the Select/Assign sec-
tion.
Channel Strip Output Destination To display the
current output source status for all channel
strips, press the OUTPUT switch in the Se-
lect/Assign section.
Send Destination To display send destination
status for any send on all channel strips, press
any master SEND switch (A–E) in the Select/As-
sign section.