Studio Technologies Model 371A Intercom Beltpack Two Channels 4-Pin Male Headset Connector

ITEM #: STCH-M371A MFG #: M371A

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    M371A - Overview

    The Studio Technologies Inc. Model 371A includes a range of new capabilities, along with the advanced performance and flexibility that Dante® audio-over-Ethernet provides. Over a standard IP network, multiple Model 371A units can be used in party-line (PL) intercom applications with help from an external Dante-enabled audio matrix such as the Studio Technologies Model 5422 Dante Intercom Audio Engine. Alternately, units can be used "point-to-point" or interfaced with Dante-compatible matrix intercom systems.

    Only a single Power-over-Ethernet (PoE) connection is required for operation. Key user features can be easily configured using the STcontroller software application. Configurable parameters include electret microphone powering, microphone preamplifier gain, sidetone level, and talk button operation. User features include microphone dynamic range control, call function, and remote mic kill ("talk off"). The wide range of capabilities, along with the excellent audio quality provided by the digital audio signal path, offers a unique and powerful user experience.

    Set up and configuration of the Model 371A is simple. An etherCON® RJ45 receptacle is used to interconnect with a standard twisted-pair Ethernet port associated with a local-area network (LAN). This connection provides both power and bidirectional digital audio. A broadcast or intercom-style headset with a dynamic or electret (low-voltage DC-powered) microphone interfaces with unit using a 4-pin XLR connector. The Model 371A's enclosure is made from an aluminum alloy which offers both light weight and ruggedness. A stainless steel "belt clip," located on the back of the unit, allows direct attachment to a user's clothing.

    The audio quality of the Model 371A's audio channels is excellent, with low distortion, low noise, and high headroom. Careful circuit design and rugged components ensure long, reliable operation. A wide range of applications can be supported, including theater facilities, over-the-air and streaming broadcasting, corporate and government AV installations, aerospace command and control, and post-production facilities.

    • Features:

      • Dante audio-over-Ethernet technology
      • Two independent talk and listen channels
      • Integrated call function
      • Supports dynamic and electric microphones
      • 4-pin male XLR headset connector
      • Excellent audio quality
      • Uses STcontroller for configuration
      • AES67 and Dante Domain Manager™ support
      • Power-over-Ethernet (PoE) powered
    • Specifications:

      • Power Source:
      • Power-over-Ethernet (PoE): class 1 (very low power, ≤3.84 watts) per IEEE® 802.3af

        Network Audio Technology:
      • Type: Dante audio-over-Ethernet
      • AES67-2013 Support: yes
      • Dante Domain Manager (DDM) Support: yes
      • Bit Depth: up to 24
      • Sample Rate: 48 kHz
      • Number of Transmitter (Output) Channels: 2
      • Number of Receiver (Input) Channels: 2
      • Dante Audio Flows: 4; 2 transmitter, 2 receiver

        Network Interface:
      • Type: 100BASE-TX, twisted-pair Ethernet, Power-over-Ethernet (PoE) supported
      • Data Rate: 100 Mb/s (10 Mb/s and 1000 Mb/s "GigE" Ethernet not supported)

        Audio Channels:
      • 2 talk, 2 listen

        Microphone Input:
      • Compatibility: dynamic or electric (low-voltage DC-powered) microphones
      • Type: unbalanced
      • Electric Microphone Power: 5 volts DC via 2.21 k resistor, selectable on/off
      • Gain: 22, 30, 42, or 48 dB, selectable, ref. -60 dBu input to Dante output (-20 dBFS nominal)
      • Frequency Response: 50 Hz to 10 kHz, -3 dB
      • Distortion (THD+N): <0.02%
      • Dynamic Range: 75 dB

      • Threshold: 1 dB above nominal level (-19 dBFS)
      • Slope: 2:1
      • Status LED: compressor active

        Headphone Output:
      • Type: single-channel (sum (combination) of audio input 1 and audio input 2)
      • Compatibility: intended for connection headsets with nominal impedance of 50 ohms or greater
      • Maximum Output Voltage: 3.8 Vrms, 1 kHz, 150 ohm load
      • Frequency Response: 20 Hz to 10 kHz, -3 dB
      • Distortion (THD+N): <0.002%
      • Dynamic Range: >100 dB

        Call Function:
      • Signaling Method: 20 kHz, ±800 Hz, within audio channels
      • Call Send Level: -20 dBFS
      • Call Receive Level: -27 dBFS minimum

      • Headset: 4-pin male XLR (Associated headset requires cable-mounted 4-pin female XLR connector wired with pin 1 mic/shield/screen; pin 2 mic; pin 3 headphone; and pin 4 headphone)
      • Ethernet: Neutrik NE8FBH etherCON RJ45 receptacle
      • USB: type A receptacle (located inside l 371A's enclosure and used only for application firmware updates)

      • Requires Studio Technologies STcontroller software application, version 1.06.00 and later (STcontroller is compatible with Windows version 7 and later)

      • Operating Temperature: 0° to 50°C (32° to 122°F)
      • Storage Temperature: -40° to 70°C (-40° to 158°F)
      • Humidity: 0 to 95%, non-condensing
      • Altitude: not characterized

        Dimensions (Overall):
      • 3.6" Wide (9.2cm)
      • 1.6" High (4.0cm)
      • 4.8" Deep (12.6cm)

      • Intended for portable applications; contains integral belt clip; optional MBK-01 Mounting Bracket Kit allows Model 371A to be permanently mounted

      • 0.6 pounds (0.3 kg)

    M371A - Required Accessories

      California Residents:
      Cancer and Reproductive Harm -