Studio Technologies Model 374A Dante 4-Channel Beltpack

The Studio Technologies Model 374A Intercom Beltpack begins with the features offered by traditional party-line intercom user devices and adds a range of new capabilities along with the advanced performance and flexibility that Dante audio-over-Ethernet provides. With four independent talk and listen channels the Model 374A bridges the gap between typical single- and dual-channel party-line devices and permanently installed multi-channel intercom panels. Imagine the possibilities-four channels of high-quality party-line intercom in a compact, user-worn package.

Key Features

• Dante audio-over-Ethernet technology
• Four independent talk and listen channels
• Supports dynamic and electret microphones
• 5-pin female XLR headset connector
• Configurable operating modes
• Excellent audio quality
• Uses STcontroller for configuration
• AES67 and Dante Domain Manager support
• Power-over-Ethernet (PoE) powered

Technical 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
4
Number of Receiver (Input) Channels
4
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
4 talks, 4 listen
Microphone Input
Compatibility
dynamic or electret (low-voltage DC-powered) microphones
Type
unbalanced
Electret 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
Call Function
Receive Support
channels 1-4
Send Support
channels 1-3
Signaling Method
20 kHz, ±800 Hz, within audio channels
Receive Level
-27 dBFS minimum
Send Level
-20 dBFS
Compressor
Threshold
1 dB above nominal level (-19 dBFS)
Slope
2:1
Status LED
compressor active
Headphone Output
Type
2-channel
Compatibility
intended for connection to stereo (dual-channel) or monaural (single-channel) 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
Connectors
Headset
5-pin female XLR
Ethernet
Neutrik NE8FBH etherCON RJ45 receptacle
USB
type A receptacle (located inside Model 374A'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)
General
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-condensing
Altitude
not characterized
Mounting
intended for portable applications; contains integral belt clip; optional MBK-01 Mounting Bracket Kit allows Model 374A to be permanently mounted
Dimensions (WxHxD)
3.6 x 1.6 x 4.8” (9.2 x 4 x 12.6cm)
Weight
0.6 pounds (0.3 kg)