Studio Technologies 76D 2014 - Manual (Page 6)

Issue 11, May 2014 Model 76D/77 User Guide
Page 6 Studio Technologies, Inc.
for Surround
Figure 1. Model 76D Central Controller Front Panel
Figure 2. Model 76D Central Controller Back Panel
Sync status
LED
Control console
status LED
real-time selection as desired. A number
of different signals can serve as the Model
76D’s digital audio timing reference. For
synchronization with a master timing refer-
ence a dedicated source of word clock,
DARS (AES11), bi-level video, or tri-level
video can be connected. Alternately, the
L/R connection of the actively selected sur-
round or stereo input source can serve as
the timing reference.
A range of surround (5.1) and stereo digital
monitor outputs are provided. The post-
fader surround and stereo monitor outputs
are intended for connection to monitor
loudspeaker systems. The pre-fader sur-
round monitor output can be used with
metering systems that require signals that
aren’t impacted by level control or other
monitoring functions. The stereo input C
direct monitor output allows an installation
to directly access the SRC capabilities.
For installation flexibility the monitor out-
puts can be configured for compatibility with
equipment that requires balanced or unbal-
anced AES3 digital audio signals. When
selected for balanced AES3 compatibility
the output impedance is 110 ohms with a
signal level of 5 volts peak-to-peak (Vpp).
For unbalanced AES3 operation the imped-
ance is 75 ohms and the level is 1 Vpp.
A sophisticated bass management func-
tion is integral to the Model 76D’s design
and can be enabled if desired. Note how-
ever that the bass management function is
only supported at sample rates of 44.1, 48,
88.2, and 96 kHz. The overall goal of bass
management is very simple: ensure that the
entire audio bandwidth of all channels can
be accurately monitored. Many loudspeaker
systems have inherent low-frequency limita-
tions, preventing a true picture of the source
material from being presented. To overcome
this, the low-frequency energy from the
five surround and two stereo channels can
Sync
Input Surround Input B
Surround Input A
Stereo Input A and
Stereo Input B
Stereo
Input C
Digital monitor
outputs
To/from
Models 77 & 71
Control Consoles
AC mains
input
Remote control inputs