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Highlights
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Digital audio inputs
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Analog audio outputs
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Downmix
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Channel mute/solo
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Level adjustment, reference level, and dim
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Overview
The
The StudioComm 76/77 Surround Monitoring System with digital inputs and
analog outputs enables simple and effective monitoring of 5.1 surround
and stereo audio material. Comprised of a Model 76 Central Controller
and a Model 77 Control Console, this system is ideal for recording,
postproduction, and broadcasting applications with analog-input
loudspeakers.
Model 76 Central Controller
The
Model 76 Central Controller is rack mountable and offers two
surround (5.1) and three stereo (2-channel) digital inputs that are
compatible with AES3id sources. Sample rates of up to 192 kHz and
bit depth of up to 24 are directly supported. Exceptional dynamic
range and extremely low distortion ensure that the audio quality of
each source is maintained.
The Model 76 Central Controller has eight analog balanced line-level
outputs organized as:
• Surround (5.1)
• Stereo (2-channel)
Model 77 and Model 71 Control Consoles
The Model 77 Control Console is the "command center." Designed to reside
at an operator's location, it allows fingertip selection of all
monitoring functions. Numerous LED indicators provide complete status
information. Up to six unique input choices are available. Each of the
choices can be configured from the system's two surround (5.1) and three
stereo (2-channel) inputs. The configuration mode also allows stereo
inputs A and B to be used as either stereo or dual monaural sources.
This can be especially useful in broadcast applications where a
2-channel AES3id source may carry two independent monaural signals.
A large, easy-to-use
rotary digital encoder provides control of the surround monitor output
level in precise 0.5-dB steps. A 4-digit numeric display indicates the
monitor output or dialnorm level in real time. The monitor output level
can be adjusted via the rotary level control, the reference level
function, or by way of the dialnorm information included in Dolby E
metadata (refer to "Dialnorm Support").
The Model 71 Control
Console works with the Model 77 to provide additional user locations
with the most frequently desired functions: level adjustment, reference
level, and dim.
One Model 76 Central
Controller can support a combination of up to four Model 77 or Model 71
Control Consoles.
Specifications
Model 76 Central Controller
General
Audio:
Frequency
Response: 20 Hz to 40 kHz ±0.05 dB (192 kHz sample rate)
Distortion: (THD+N) 0.004%, ref 1 kHz, +4 dBu output
S/N Ratio: 86 dB, ref +4 dBu output
Dynamic Range: greater than 106 dB
Crosstalk: 104 dB @ 1 kHz; 90 dB @ 20 kHz, ref –1 dBFS input
Digital
Audio Inputs: five (18 audio channels)
Configuration: two surround (5.1) and three stereo (2-channel)
Type: AES3id/SMPTE 276M (75 ohms, unbalanced)
Connectors: BNC
Supported Sample Rates: 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
Word Length: 24 bits maximum
Sync Source: all inputs independently self-clocking
Analog Monitor Outputs:
eight
Configuration: organized as one surround (5.1) and one stereo
(2-channel)
Type: electronically balanced
Maximum Level: +26 dBu into 600 ohms or greater
Connector: 25-pin D-subminiature female
Downmix:
5.1 to stereo, stereo to mono
Stereo to
Mono Bandpass Filter:
Response: –3 dB @
100 Hz and 5 kHz, nominal, 12 dB/octave
Control Console
Interface:
Type: RS-485, 115.2 kbit/s, 8-N-1
Connector: 9-pin D-subminiature female
Power: 12 volts DC, 200 milliamperes maximum
Remote Control Inputs:
two
Functions: remote mute all, remote dim
AC Mains:
Requirement: 100, 120, or 220/240 V, ±10%, factory configured, 50/60 Hz,
30 watts maximum
Connector: 3-blade, IEC 320 C14-compatible (mates with IEC 320 C13)
Dimensions
(Overall):
19.00 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
8.75 inches deep (22.2 cm)
Mounting:
one space in a standard 19-inch rack
Weight: 8.8 pounds (4.0 kg)
Model 77 Control Console
Application: up to four Model 77 Control
Consoles can be connected to Model 76 Central
Controller
Power: 12 volts DC, maximum current 100 milliamperes,
provided by Model 76
Central Controller
Central Controller Interface:
Type: RS-485, 115.2 kbit/s, 8-N-1
Connector: 9-pin D-subminiature female
Control
Data:
Type: RS-485
Data Rate/Format: 115.2 kbits/s, 8-N-1
Connector: 9-pin D-subminiature female
Dimensions
(Overall):
7.20 inches wide (18.3 cm)
2.20 inches high (5.6 cm)
5.40 inches deep (13.7 cm)
Weight: 1.7 pounds (0.8 kg)
Model 71 Control Console
Application:
up to
three Model 71 Control Consoles can be connected to a Model 76 Central
Controller
Power: 12 volts DC, 35 milliamperes maximum, provided by Model 76 Central Controller
Control
Data:
Type: RS-485
Data Rate/Format: 115.2 kbit/s, 8-N-1
Connector: 9-pin D-subminiature female
Dimensions
(Overall):
3.20 inches wide (8.1 cm)
2.20 inches high (5.6 cm)
4.10 inches deep (10.4 cm)
Weight: 0.8 pounds (0.4 kg)
Specifications
subject to change without notice.
StudioComm Systems
Which
StudioComm system is right for your application? Review the
StudioComm
Loudspeaker Monitor Control Systems Feature-by-Feature Comparison Chart.
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