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The Model 371A Intercom Beltpack begins with the features offered by 2-channel broadcast-style party-line intercom user devices then adds support for traditional single-channel headsets. Applications that have traditionally deployed single-channel analog party-line intercom systems from firms such as Clear-Com® can now easily upgrade to a high-performance dual-channel system. To maintain compatibility and user familiarity, legacy headsets that use a 4-pin female XLR connector are directly compatible.
The 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.
For further information please refer to the attached data sheet.
We offer a 3 year warranty on this product from its date of purchase. For more information regarding our support, repair and warranty, please download our Warranty Guide here.
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-EthernetAES67-2013 Support: yesDante Domain Manager (DDM) Support: yesBit Depth: up to 24Sample Rate: 48 kHzNumber of Transmitter (Output) Channels: 2Number of Receiver (Input) Channels: 2Dante Audio Flows: 4; 2 transmitter, 2 receiver
Network Interface:Type: 100BASE-TX, twisted-pair Ethernet, Power-over-Ethernet (PoE) supportedData 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 electret (low-voltage DC-powered) microphonesType: unbalancedElectret Microphone Power: 5 volts DC via 2.21 k resistor, selectable on/offGain: 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 dBDistortion (THD+N): <0.02%Dynamic Range: 75 dB
Compressor:Threshold: 1 dB above nominal level (–19 dBFS)Slope: 2:1Status 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 greaterMaximum Output Voltage: 3.8 Vrms, 1 kHz, 150 ohm loadFrequency Response: 20 Hz to 10 kHz, –3 dBDistortion (THD+N): <0.002%Dynamic Range: >100 dB
Call Function:Signaling Method: 20 kHz, ±800 Hz, within audio channelsCall Send Level: –20 dBFSCall Receive Level: –27 dBFS minimum
Connectors: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 receptacleUSB: type A receptacle (located inside l 371A's enclosure and used only for application firmware updates)
Configuration: requires Studio Technologies STcontroller software application, version 1.06.00 and later (STcontroller is compatible with Windows version 7 and later)
Environmental:Operating Temperature: 0 to 50 degrees C (32 to 122 degrees F)Storage Temperature: –40 to 70 degrees C (–40 to 158 degrees F)Humidity: 0 to 95%, non-condensingAltitude: not characterized
Dimensions (Overall):3.6 inches wide (9.2 cm)1.6 inches high (4.0 cm)4.8 inches deep (12.6 cm)
Mounting: intended for portable applications; contains integral belt clip; optional MBK-01 Mounting Bracket Kit allows Model 371A to be permanently mounted
Weight: 0.6 pounds (0.3 kg)
Specifications and information subject to change without notice.