Product: StudioComm 76D/77 All-Digital 5.1 Surround Monitoring System
New Features Coming Soon: A new software release adds enhanced capabilities to the StudioComm 76D/77 system. To support a broader range of loudspeaker systems an advanced set of bass management resources has been added. The bass management function redirects low-frequency energy from the main channels, combines it with the LFE content, then routes the sum to the subwoofer output. The downmix capability of the 76D/77 has also been enhanced with the addition of configurable level coefficients. More
Overview
The all-digital StudioComm 76D/77 Surround Monitoring System with digital inputs and outputs enables simple and effective monitoring of 5.1 surround and stereo audio material. Comprised of a Model 76D Central Controller and a Model 77 Control Console, this system is ideal for recording, post production, and broadcasting applications with digital-input loudspeakers.
Model 76D Central Controller
The Model 76D 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. Sample rate conversion (SRC) is available on one input (stereo input C).
The Model 76D Central Controller provides 16 digital output channels with transformer-coupled outputs and selectable impedance (75 or 110 ohms):
- Pre-fade surround (5.1)
- Post-fade surround (5.1)
- Post-fade stereo (2-channel)
- Stereo input C direct output
The Model 76D's sync input allows support for video (bi-level and tri-level), word clock, DARS, and AES3id. In addition, up to 340 milliseconds of digital delay can be selected to compensate for processing delays in an associated video path.
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. Five buttons and associated LEDs enable quick selection of the surround and stereo input sources to be monitored.
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 LED readout displays the level of the monitor output. The monitor output level can be adjusted via the rotary level control or pre-set using the reference level function.
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 76D Central Controller can support a combination of up to four Model 77 or Model 71 Control Consoles.
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Highlights
- Digital audio inputs
- Digital audio outputs
- Bass management capability (available soon)
- Configurable downmix (available soon)
- Channel mute/solo
- Level adjustment, reference level, and dim
Product Information Downloads
Which StudioComm system is right for your application? Review the StudioComm Loudspeaker Monitor Control Feature-by-Feature Comparison Chart.
Specifications
Model 76D Central Controller
General Audio:
Supported Sample Rates: 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
Word Length: 24 bits maximum
Internal Processing: 32 bits
Input-to-Output Latency: one sample (e.g., 0.021 milliseconds @ 48 kHz sample rate)
Digital Audio Inputs: five (18 audio channels)
Configuration: two surround (5.1) and three stereo
Type: AES3id-2001/SMPTE 276M (unbalanced 75 ohms/1 Vpp)
Connectors: BNC (per IEC 60169-8 Amendment 2)
Sample Rate Conversion (SRC):
Application: available on Stereo Input C
Input Sample Rate Range: 8 to 216 kHz, limited to 1/6 to 6 times the output sample rate
Latency: 1 millisecond, nominal
Sync Source: configured to follow L/R of currently selected input or signal connected to sync input
Sync Input:
Compatible Sources: word clock, DRS (AES11), bi-level video, tri-level video
Jitter: 4 ns pp maximum
Connector: BNC (per IEC 60169-8 Amendment 2)
Termination: 75 ohms, selectable on/off
Digital Monitor Outputs: 16 (eight pairs)
Configuration: organized as two surround (5.1) and two stereo
Dynamic Range: 135 dB
Type: AES3 (110 ohms/5 Vpp) or AES3id/SMPTE 276M (75 ohms/1 Vpp), selectable
Connector: 25-pin D-subminiature female (DB-25F)
Configurable Delay: 0 to 340 milliseconds @ 48 kHz sample rate (scales up or down depending on actual sample rate)
Post-Fader Monitor Output Level Offsets: each surround and stereo channel independently adjustable in 0.5-dB steps over a ±12-dB range
Downmix:
Functions: 5.1 to stereo, stereo to mono
5.1 to Stereo: LS @ –3 dB summed with L;
RS @ –3 dB summed with R;
C @ –6 dB summed with L and R;
LFE @ –6 dB summed with L and R (if enabled);
C, LFE, LS, and RS monitor outputs mute
Stereo to Mono: L @ –3 dB summed with R @ –3 dB to C;
L, R, LS, RS, and LFE monitor outputs mute (for a surround input this results in the C output being the sum of L @ –3 dB, R @ –3 dB, C @ –3 dB, LFE @ –3 dB (if enabled), LS @ –6 dB, and RS @ –6 dB)
Control Console Interface:
Type: RS-485, 115.2 kbit/s, 8-1-N
Polling Interval: 50 milliseconds
Power: 12 volts DC, 500 milliamperes maximum
Connector: 9-pin D-subminiature female (DE-9F)
Remote Control Inputs: two
Functions: remote mute all, remote dim
Type: +5 V logic, activates on closure to system common
Connector: 9-pin D-subminiature female (DE-9F)
AC Mains:
Requirement: 100 to 230 V, 50/60 Hz, 15 watts maximum
Connector: 3-blade, IEC 320 C14-compatible (mates with IEC 320 C13)
Dimensions (Overall):
19.0 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
7.0 inches deep (17.8 cm)
Mounting: one space (1U) in a standard 19-inch rack
Weight: 6.2 pounds (2.8 kg)
Model 77 Control Console
Application: up to four Model 77 Control Consoles can be connected to a Model 76D Central Controller
Power: 12 volts DC nominal (9 volts DC minimum), maximum current 100 milliamperes, provided by Model 76D Central Controller
Control Data:
Type: RS-485
Data Rate/Format: 115.2 kbit/s, 8-N-1
Connector: 9-pin D-subminiature female (DE-9F)
Dimensions (Overall):
7.2 inches wide (18.3 cm)
2.2 inches high (5.6 cm)
5.4 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 76D Central Controller
Power: 12 volts DC nominal (9 volts DC minimum), maximum current 35 milliamperes, provided by Model 76D Central Controller
Control Data:
Type: RS-485
Data Rate/Format: 115.2 kbit/s, 8-N-1
Connector: 9-pin D-subminiature female (DE-9F)
Dimensions (Overall):
3.2 inches wide (8.1 cm)
2.2 inches high (5.6 cm)
4.1 inches deep (10.4 cm)
Weight: 0.8 pounds (0.4 kg)
Specifications subject to change without notice.
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