Studio Technologies 78 2004 - Manual (Page 7)

Model 78/79 User Guide Issue 5, January 2004
Studio Technologies, Inc. Page 7
for Surround
Model 79 Control Console
The Model 79 Control Console is a compact
self-contained unit designed to be located
at the operator’s position. It allows fingertip
control of all monitoring parameters. Numer-
ous LED indicators provide complete status
information. A 4-digit numeric display indi-
cates the monitor output level in real time.
A major strength of the Model 79 is its ability
to configure, under software control, a num-
ber of operating parameters. For example,
during the installation and calibration pro-
cess, the relative levels of the monitor out-
put channels can be adjusted. This helps to
ensure that maximum performance from the
loudspeaker system can easily be obtained.
All configuration parameters are stored in
nonvolatile memory.
The Model 79 provides two buttons and as-
sociated LEDs for selection of the surround
source to be monitored. While in most cases
only one input source will be monitored at
a time, both inputs can be selected for
simultaneous monitoring. This feature can
be useful for creating a rough mix from
the two sources. It is also a fast, effective
means of making a “seat-of-the-pants”
check on the phase relationship between
synchronized signals. For compatibility with
some cinema formats, two buttons and
associated LEDs allow +10 dB of gain to
be added to each input’s LFE channel.
Four downmix modes allow the selected
source to be checked for compatibility
among different formats. The downmix
modes, 5.1, LCRS, Stereo, and Mono,
were implemented primarily for use in
sound-for-picture applications. As such,
from the factory the downmix coefficients
were selected to be effective in these envi-
ronments. However, a technician can easily
change each downmix mode to meet the
specific needs of a facility or audio format.
Figure 3. Model 79 Control Console Front Panel
Downmix
Input mute/solo
Mute/solo
mode select
Monitor Output
• LFE low-pass filter
• Reference level
• Mute all
• Dim
• Rotary level control
Monitor output
level display
Input sources Mains/sub output mute