16
H
U
I R E F E R E N C E G U I D E
MIC 1
OUT
BAL /
UNBAL
OUT
BAL /
UNBAL
INSERT
TRIM
TRIM
REMOTE
TALKBK
TRIGGER
INTERNAL
EXTERNAL
MIC
INPUT
MIC
INPUT
+48V
PHANTOM
+48V
PHANTOM
+48V
PHANTOM
MIC
INPUT
TRIM
MIC 2
MIC
TALKBACK
0
60 dB
60 dB
60 dB
0
0
IN
OUT
INSERT
IN
OUT
GAIN
GAIN
GAIN
Direct out with no signal interruption to output.
Insert only to first “click.”
Channel Insert jack
Channel Insert jack
Channel Insert jack
Direct out with signal interruption to output.
Insert all the way in to the second “click.”
For use as an effects loop.
(TIP = SEND to effect, RING = RETURN from effect.)
TS PLUG
TS PLUG
TRS PLUG
“tip”
This plug connects to one of the
mixer’s Channel Insert jacks.
“ring”
tip
ring
sleeve
SEND to processor
RETURN from processor
(TRS plug)
Insert Jack Options
Insert Jack “Y” Cable
Talkback and Mic Preamp
Section
Another great thing about HUI —
if we don’t mind saying so our-
selves — is its talkback and mic
preamps. They allow you to add
a vocal track, insert slating in-
structions, and perform other
handy tasks, without having to
resort to an outboard mixer.
1
Mic preamp Trim control.
Used to set initial gain stage for
mic signal levels (Mic 1, Mic 2,
and Talkback). Trim level from
mic level (60dB down) to Unity
(0dBu). Maximum input is +22dBu.
2
Phantom Power switch.
Push this switch to provide 48V
of low-current DC to power
condenser mics.
3
Talkback XLR mic input.
Used to connect an external talk-
back mic. Note that there is no
dedicated output for this preamp,
although talkback logic routing
will send the signal to any or all of
the
MONITOR OUTPUTS
(front
panel assignable — see instructions
for the Talkback Enable switch
bl
on page 13).
4
Mic Internal/External switch.
Switches
talkback signal source between the front in-panel
mic or an external talkback mic plugged in here.
5
Remote Talkback Trigger jack.
The
talkback circuit is bidirectional — it can either
trigger something or be triggered by something.
To remotely trigger HUI’s talkback function, con-
nect a normally-open on/off footswitch to this jack.
This is for the producer who loves to sit com-
fortably back and communicate with the talent
during crucial moments in a recording session.
Conversely, if the engineer wants to enable
another console’s talkback function via the HUI
front panel talkback switch, connect a TS cable
between this jack and an unbalanced destina-
tion jack. When the front panel talkback switch
is pressed (enabled), the line is pulled “low.”
See page 31 for a diagram of this circuit.
6
XLR mic inputs.
These are two of
Mackie’s high-headroom, low-noise mic
preamps. Intended for mic-level inputs only,
they offer plenty of gain and sonic clarity.
7
Inserts.
1/4
″
TRS insert jacks for using
in-line external effects and signal processing
with TRS to TS send and TS return “Y” cables.
These connectors can also be used as direct
outputs using a 1/4
″
TS plug pushed in all the
way (interrupting the audio signal completely),
or only to the first click, which does not inter-
rupt the audio (see “Insert Jack Options”
figure). The latter method allows you to use the
insert as a direct out in combination with the
mic output described next.
8
Outputs.
1/4
″
TRS jacks for routing your
microphones to external sources, such as the
DAW audio interface for recording. These line-
level outputs will provide either balanced and
unbalanced signals.
HUI FEATURES AND CONTROLS
