Studio Technologies Model 76DA/77 StudioComm 5.1 Surround Monitor System


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Dale #:STUD-M76DAM77

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  • 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, post-production, and broadcasting applications with analog-input loudspeakers.

    Model 76 Central Controller
    The Model 76 Central Controller is rack mountable and offer 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 Control Console
    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.

    One Model 76 Central Controller can support a combination of up to four Model 77 or Model 71 Control Consoles.


    • Digital audio inputs
    • Analog audio outputs
    • Downmix
    • Channel mute/solo
    • Level adjustment, reference level, and dim
  • 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): 19.0 inches wide (48.3 cm) 
    1.72 inches high (4.4 cm) 
    8.75 inches deep (22.2 cm) 
    Mounting: one space (1U) 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): 7.2 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)
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