Data Sheet

ManualsBrandsStudio Technologies ManualsLive SoundModel Surround Monitoring System

Model 76D Central Controller / Model 77 Control Console

50231-0514, Issue 4

Overview

As creating and distributing multi-channel surround (5.1) and stereo audio mate-

rial has become a day-to-day reality, the ability to simply and effectively monitor

these sources is imperative for recording, post-production, and broadcast facili-

ties. And with audio-with-picture applications becoming so prevalent, additional

monitoring challenges have arisen. Studio Technologies has addressed these

needs with the StudioComm for Surround Model 76D Central Controller and

the Model 77 and Model 71 Control Consoles. With digital audio inputs, digital

monitor outputs, support for multiple user control surfaces, and an extensive

set of operating resources it’s a simple task to integrate a monitoring system

into virtually any facility. The carefully selected group of features, including

surround and stereo inputs, configurable input-signal time delay, multiple

pre- and post-fader outputs, configurable downmix and mute/solo functions,

and bass management, along with a multi-format sync input, make the sys-

tem powerful yet simple to operate. And by using the best of contemporary

technology, as well as following rigorous design practices, the system’s audio

quality is excellent.

A StudioComm for Surround system starts with the Model 77 Control Console.

It’s the system’s “command center” and is designed to reside at an operator’s

location, allowing fingertip selection of all monitoring functions. Numerous

LED indicators provide complete status information. A 4-digit numeric display

indicates the post-fader monitor output level in real time. A major strength of

the Model 77 is its ability to configure, under software control, many important

operating parameters. Intended for secondary monitoring locations, the Model 71 Control Console is a compact user control sur

face. It provides three of the most basic functions: a rotary level control, dim on/off button, and reference level on/off button.

While many installations will use only one Model 77 Control Console, up to three additional Model 77 or Model 71 Control

Consoles can also be connected. This provides multiple users with full control over a facility’s monitor system. And to make

installation simple, the Model 76D provides power for all connected Model 77 or Model 71 units.

The core of this StudioComm for Surround system is the Model 76D Central Controller. The one-rack-space unit contains

circuitry that supports digital audio inputs, digital monitor outputs, processing, and the user interface. The Model 76D provides

two surround (5.1) and three stereo digital audio inputs. These unbalanced digital inputs are AES3-compliant; sources of this

type are ubiquitous in most post-production and broadcast environments. The inputs allow a sample rate of up to 192 kHz and

a bit depth of up to 24 to be directly supported. Circuitry associated with one of the stereo inputs provides sample rate conver-

sion (SRC) capability, allowing a wide range of digital audio sources to be monitored. Up to 340 milliseconds of input delay can

be selected to compensate for processing delays in an associated video path. For flexibility, two delay values can be configured,

allowing real-time selection as desired. A number of different signals can serve as the Model 76D’s digital audio timing refer-

ence. For synchronization with a master timing reference 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 surround or stereo input source can

serve as the timing reference.

Key Features:

• AES3 unbalanced digital audio inputs

• AES3 unbalanced digital audio outputs

• Bass management capability

• Configurable downmix

• Channel mute/solo

• Level adjustment, reference level, and dim

Model 77 Control Console

Model 76D Central Controller Front Panel

Summary of content (4 pages)

PAGE 1
Model 76D Central Controller / Model 77 Control Console Overview As creating and distributing multi-channel surround (5.1) and stereo audio material has become a day-to-day reality, the ability to simply and effectively monitor these sources is imperative for recording, post-production, and broadcast facilities. And with audio-with-picture applications becoming so prevalent, additional monitoring challenges have arisen.
PAGE 2
Model 76D Central Controller Back Panel 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 surround 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.
PAGE 3
The dim function allows the post-fader surround and stereo monitor output levels to be reduced by a fixed dB amount. The dim level is configured from among four available values. A mute all function allows the post-fader surround and stereo monitor output channels to be simultaneously muted. The channel mute/solo section provides post-fader surround and stereo channel monitoring control, allowing a single channel to be muted or monitored.
PAGE 4
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: two samples (e.g., 0.042 milliseconds @ 48 kHz sample rate) Digital Audio Inputs: 5 (18 audio channels) Configuration: two surround (5.