Audio Input And Output; Signal Flow Primer; Stereo Monitor Mode; 1:1 Discrete Monitor Mode - Mackie HUI Reference Manual

AUDIO INPUT AND OUTPUT

Signal Flow Primer

Monitoring the audio signals can be done in
either mono, stereo, or surround-sound (with
six discrete channels). The overall input vol-
ume is controlled by the MASTER VOLUME
knob. The outputs are controlled by three sepa-
rate output level controls and toggle switches
(labeled OUTPUT 1, 2, and 3). HUI uses DCAs
(digitally controlled amplifiers) to control in-
ternal signal flow completely independent of
the DAW. The signal is distributed according to
which inputs and outputs are enabled.
Stereo Monitor Mode — enabled inputs' stereo
signals are summed into one stereo signal
In stereo monitor mode — with the 1:1 DIS-
CRETE switch turned off — any of the three
stereo input sources may feed any of the stereo
MONITOR OUTPUTS (OUTPUT 1, 2, and 3).
Any or all of the three stereo inputs can be
monitored simultaneously. That is, it's up to you
to disengage an input if you don't want to moni-
tor it. Any and all of the OUTPUTS can be
active at once, so you can send outputs to vari-
ous pairs of speakers and various combinations
of speaker pairs and recorders.
(switched OFF)
Stereo
Input 1 on
INPUT 1
Stereo
Input 2 on
INPUT 2
(Stereo
Input 3 off)
INPUT 3
(switched ON)
Input 1
(mono pair)
INPUT 1
Input 2
(mono pair)
INPUT 2
Input 3
(mono pair)
INPUT 3

1:1 DISCRETE Monitor Mode

1:1 Discrete Monitor Mode — enabled inputs are
not summed
When HUI's 1:1 DISCRETE switch is engaged
(the LED will light), the control room section be-
comes a discrete surround matrix capable of
either standard 4.1 surround (L/R/Center/Sur-
round/subwoofer), or 5.1 surround (L/R/Center/
Surround L/Surround R/subwoofer).
You can set up your DAW audio output con-
figuration so that the various "stem" outputs
correspond to the physical outputs on the DAW
audio interface. These outputs are then patched
to HUI's MONITOR INPUTS 1, 2, and 3.
With 1:1 DISCRETE engaged, the output
LEVEL controls for OUTPUTS 1, 2, and 3 act as
trims for the respective mix stems (L/R/Center/
Surround L/Surround R/subwoofer). The MAS-
TER VOLUME controls the level for all three
output pairs, allowing you to trim the overall
level of separate surround amp feeds.
Keep in mind that, when in discrete mode,
output pairs share a common stereo level con-
trol and individual outputs cannot be adjusted
independently.
Note: The DIM and MUTE controls operate
on all outputs, regardless of whether HUI is in
discrete mode. MONO, too, sums all inputs to-
gether, regardless of mode. Refer to the audio
block diagram on page 30 for further info.
CONTROL ROOM CONTROL ROOM
1:1 DISCRETE MONO
O O MAX
MASTER
VOLUME
MUTE DIM

STEREO Monitor Mode

CONTROL ROOM CONTROL ROOM
1:1 DISCRETE MONO
MAX
O O
MASTER
VOLUME
MUTE DIM
(Output 1
switched off)
OUTPUT 1
LEVEL 1
Output 2 on;
signals 1 & 2
OUTPUT 2
mixed
LEVEL 2
Output 3 on;
signals 1 & 2
OUTPUT 3/
mixed
LEVEL 3
PHONES
Output 1 controls
Input 1 only
OUTPUT 1
LEVEL 1
Output 2 controls
Input 2 only
OUTPUT 2
LEVEL 2
Output 3 controls
Input 3 only
OUTPUT 3/
LEVEL 3
PHONES
AUDIO INPUT AND OUTPUT
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