Studio Technologies 76D 2014 - Manual (Page 7)

Model 76D/77 User Guide Issue 11, May 2014
Studio Technologies, Inc. Page 7
for Surround
Figure 3. Model 77 Control Console Front Panel
Channel mute/solo
Mute/solo
mode
Post-fader surround
monitor output
• Surround/stereo
• Reference level
• Mute all
• Dim
• Rotary level control
Monitor output
level display
Input source
select
Downmix
be separated and then routed to the sub-
woofer loudspeaker. Several of the bass
management functions can be configured
to match the requirements of specific
installations.
Great care was taken in designing the
system’s architecture, ensuring that the
character of the audio input signals is
preserved. All audio processing, including
bass management, is performed in 32 bits
using a high-speed field-programmable
gate array (FPGA) integrated circuit.
The Model 76D occupies one space (1U)
in a standard 19-inch rack. Digital audio
sources are interfaced with the Model 76D
using nine BNC connectors. A tenth BNC
connector is used by the sync source. Digi-
tal monitor output signal connections are
made using a 25-pin D-subminiature con-
nector. One 9-pin D-subminiature connec-
tor is used to connect the Model 76D with
up to four Model 77 or Model 71 Control
Consoles. A second 9-pin “D-sub” connec-
tor is used to interface with remote control
signals. AC mains power is connected
directly to the Model 76D, with an accept-
able range of 100 to 230 volts, 50/60 Hz.
Additional Details
The Model 77 provides five buttons and
associated LEDs for selection of the sur-
round and stereo input sources to be moni-
tored. While in most cases only one input
source will be monitored at a time, stereo
input C can be selected for simultaneous
monitoring with one of the two surround
or other two stereo inputs. This allows
the two selected inputs to be combined
(“summed”).
It’s interesting to note that while each of
the two surround inputs has an LFE chan-
nel associated with it, the “.1” post-fader
surround monitor output is designated as
SUB (subwoofer), rather than LFE. This
terminology was carefully selected to high-
light the fact that this output channel may
include more than just LFE content. The
bass management function, if enabled,
will redirect low-frequency energy from the
main input channels, combing it with the