Studio Technologies 74 - Manual (Page 37)

Issue 2, January 2006 Model 74/75 User Guide
Page 38 Studio Technologies, Inc.
for Surround
and hold a channel button, then add the ex-
tra channels by momentarily pressing their
buttons.
Headphone Cue System/Talkback
The headphone cue system and its associ-
ated talkback function is simple to use, but
does offer a number of user and confi gura-
tion options. On the Model 75, three but-
tons and one LED are used to control these
functions.
The talkback button on the Model 75 is used
to enable the talkback function. Depending
on the Model 75’s confi guration, the but-
ton may provide a push-to-talk or a latching
(push on/push off) action. In most cases
enabling the talkback function will also
cause the dim function to enable. However,
be aware that a Model 75 confi guration
does allow talkback to not enable dim. The
LED associated with the talkback button will
light whenever talkback is enabled using the
button on the Model 75. Remotely enabling
talkback, using a hard-wired connection or
an infrared (IR) source, will cause the talk-
back LED to fl ash.
By using the two talkback level buttons,
the talkback level can be selected over an
8-step range. To adjust the talkback level,
enable the talkback function and press the
up or down button as required. The LED
associated with the talkback button will fl ash
each time the level is increased or de-
creased until the top or bottom of the range
is reached. At this point, if you continue to
press the same level button the LED won’t
fl ash, indicating you’re at the top or bottom
of the 8-step level range.
Depending on how the talkback function
has been confi gured, talkback audio will
either add to (sum with) the selected cue
audio source or it will replace (interrupt)
the source. Note that it’s also possible to
confi gure the system so that no cue audio
source will be present at any time.
A “hidden” Model 75 function allows the
cue audio source to be selected from be-
tween two choices. The fi rst choice is the
left and right audio channels being sent to
the monitor outputs. These channels are
post (after) the input source buttons and
the downmix functions; whatever is being
heard out of the left and right monitor loud-
speakers will be heard in the headphone
cue system. The second cue audio choice
is Stereo B. If this choice is selected, the
source or sources selected for the moni-
tor outputs will have no impact on what is
heard in the headphone cue system.
It’s a simple matter to determine which cue
audio source is selected and, if desired,
change to the other one. When the talk-
back function is not active, press both the
talkback level up and level down buttons.
The four input source LEDs will no longer
refl ect the selected monitor source (or
sources) but instead will display the select-
ed cue audio source. Observing the LED
associated with Stereo B, if it is not lit the
cue audio source is the left and right chan-
nels being sent to the monitor outputs. If
the LED associated with Stereo B is fl ash-
ing, the cue audio source is Stereo B. To
change the selected cue audio source,
press the Stereo B button.
Note that the Model 75 doesn’t provide an
overall level adjustment for the cue audio
and talkback output signals that are sent to
the talent amplifi er and line-level cue out-
puts. As was previously discussed, the rel-
ative level of the talkback audio versus the
cue audio can be adjusted. This refl ects
the StudioComm’s system architecture and
isn’t a design defi ciency. The overall level