Studio Technologies 68 V.1 - Manual (Page 10)

Issue 2, June 1999 Model 68/69 User Guide
Page 10 Studio Technologies, Inc.
for Surround
route input signals to the different monitor
output channels. An input-channel-to-
output-channel relationship is maintained.
A signal on the subwoofer channel of input
2 will, when selected, output only on the
subwoofer channel of the monitor output.
Any rerouting of the input signals must be
done prior to connection to the Studio-
Comm system. This should not be an
impairment in most facilities, but it’s impor-
tant to highlight this fact.
Audio Channel Assignment
The designers of the StudioComm Models
68 and 69 made the decision to assign the
audio channels in the order of left, center,
right, left surround, right surround, and
subwoofer. It was felt that this was a nice,
rational arrangement, common to many
“5.1” installations, that would fit the needs
of most operators. However, not all for-
mats follow this convention, or even use
the same nomenclature. Major audio
companies such as Dolby Laboratories
and DTS may use different channel
assignment schemes in their release
formats. It is hoped that careful intercon-
nection of audio signals during installation,
or incorporating routing flexibility using
a patch bay, will mitigate any big
inconveniences.
SUB Versus LFE
The term SUB was selected because of
its general popularity, but we understand
that some people prefer the term LFE
(low-frequency-enhancement). If you’re
someone who can’t live with our choice,
please feel free to relabel your Studio-
Comm system. Our feelings won’t be
hurt—at least not much!
Applications
Remote Control Capability
Four remote control functions are avail-
able: Mute all, dim, L/R Bypass, and input
select. Remote mute all and remote dim
are provided so that communications
systems, machine control systems, or
communication functions associated with
audio consoles can easily be interfaced.
Remote L/R Bypass allows an audio
console’s solo or PFL functions to remain
viable while mixing in surround. Remote
input select allows a machine control
system, or audio storage device, to control
which input source is selected for monitor-
ing. Audio-post professionals will know this
as PEC-Direct switching, which can be
easily implemented.
L/R Bypass
The L/R Bypass function was expressly
provided so that surround monitoring
capability could be added to a facility while
maintaining compatibility with existing
stereo monitoring systems. The L/R
Bypass signal source would normally be
the stereo monitor output of an audio
console. During normal surround mode
operation of the Model 68 and Model 69,
the left and right monitor outputs are
connected, via electromechanical relays,
to the Model 68’s output circuitry. When
the L/R Bypass function is enabled, the left
and right monitor outputs disconnect from
the Model 68’s output circuits, and connect
to the L/R Bypass Inputs; the other four
monitor output channels mute. Activation
of the L/R Bypass function can be by
means of a button on the Model 69 Control
Console, or via a signal connected to the
L/R Bypass remote input.