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Studio Technologies Model 236 Announcers Console

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The Model 236 Announcer's Console provides a combination of high-performance audio with an extensive set of user features and configurable resources. The unit is intended for use in demanding broadcast sports, eSports, live event, entertainment, and streaming broadcast applications. With a few si... Read More

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The Model 236 Announcer's Console provides a combination of high-performance audio with an extensive set of user features and configurable resources. The unit is intended for use in demanding broadcast sports, eSports, live event, entertainment, and streaming broadcast applications. With a few simple connections the Model 236 can provide one on-air talent with all the resources they need to support a wide range of applications. The compact, rugged steel enclosure is intended for tabletop use, small enough for use "court-side" or in a crowded booth, yet flexible enough for remote production deployment. The Model 236 supports Dante® audio-over-Ethernet digital media technology with AES67 compatibility for integration into contemporary applications.


  • Compact unit supports one on-air location
  • Dante audio-over-Ethernet technology
  • Microphone preamplifier with selectable gain and P48 power
  • One main and six talkback output channels
  • User-controlled headphone mixing
  • Superior audio quality
  • Redundant Dante with two GigE interfaces
  • PoE and 12 Vdc powering
  • Extensive feature configuration using STcontroller application
  • Supports REMI/At-Home applications

The Model 236 can integrate directly into both Dante audio-over-Ethernet and standard analog audio environments. With just a Power-over-Ethernet (PoE) Gigabit network connection, a microphone, and a pair of headphones a complete broadcast on-air position can be created. With the addition of a second Ethernet connection Redundant Dante can be supported. And by using the Model 236's analog microphone output a connection to a microphone-level input on an associated remote I/O interface or audio console can be supported.

With a total of eight Dante audio inputs and an integrated sidetone function, users can easily create their desired headphone audio mix. They'll enjoy clear and "click-free" monaural or stereo audio that can only help their on-air performance. Six independent Dante talkback channels allow users to communicate with a variety of support personnel. Among the range of operating capabilities includes the ability to create talent cue (IFB) channels. This was specifically included for REMI/At-Home applications. Provision has been made such that a technician can "customize" the Model 236's hardware. Option kits, purchased separately, can be added to support functions such as multi-pin headset connectors, up to four remote control inputs, and a low-voltage DC tally output.

The Model 236 was designed to meet two main goals: supporting great audio quality and providing an extensive set of configurable features. Using the latest in audio integrated circuits and advanced 32-bit audio processing, the unit's audio performance should meet or exceed that of any audio console, standalone microphone preamplifier, remote I/O interface, or outboard A/D or D/A converter. With over 40 years of professional audio experience, Studio Technologies takes audio performance seriously! And while providing excellent measured specifications is a "must," a device also has to "sound" good before we feel its design is complete.

The amount of flexibility provided in the Model 236 allows it to meet the needs of virtually all on-air announcer applications. And using the Studio Technologies' STcontroller software application makes "customizing" the operation of a Model 236 fast and simple. The unit's ability to handle both day-to-day and specialized situations makes it a unique product in the market. For example, each pushbutton switch and rotary encoder can be independently configured with multiple choices that range from simple to quite advanced. If a Model 236 can't seem to be configured to meet an application's goals please contact Studio Technologies' technical support for an application review.

The Model 236 is part of a three-product family that differ only in the number of talkback channels provided. The Model 236 provides six talkback channels, while the Model 232 provides two and the Model 234 provides four. The Model 236, as with the other two models, has a compact enclosure with overall dimensions of 6.5 inches wide (16.5 cm), 2.9 inches high (7.4 cm), and 4.9 inches deep (12.5 cm). Weighing 2.1 pounds (0.95 kg), the enclosure is made of steel to provide some "heft" to minimize the chance of inadvertent movement. The Model 236's main, secondary, and programmable logic (FPGA) firmware can be updated using the USB port on the back of the unit; the Dante firmware can be updated via an Ethernet connection.

Setup, Configuration, and Operation

Set up, configuration, and operation of the Model 236 is simple. The unit includes two Neutrik etherCON RJ45 connectors which allow interfacing with single or redundant Gigabit Ethernet networks. The primary network connection can provide power to the unit using a port on a Power-over-Ethernet (PoE) network switch. Model 236's power can also be supplied from a 12 volt DC source that is connected using a 4-pin XLR connector. A broadcast headset or handheld ("stick") microphone can be directly connected to the unit's 3-pin female XLR microphone input connector. The input is compatible with dynamic or condenser microphones. A P48 phantom power source allows support for a wide range of condenser microphones. A 3-pin male XLR connector provides an analog microphone output for integration with inputs on related devices. A configuration choice allows this output to be active all the time (hot mic operation) or muted or unmuted following the main output pushbutton function. A pair of stereo headphones, the headphone connection from a stereo or monaural headset, or even earbuds can be connected to the Model 236's headphone output jack.

Audio signals are routed to and from the Model 236 using the Dante Controller software application. This is available, free of charge, from Audinate®, the creators of Dante. All Model 236 operating features are configured using the Studio Technologies' STcontroller software application. The extensive set of parameters allows the unit's functions to be tailored to meet the needs of many, many applications. STcontroller, compatible with version 7 and later of the Windows® operating system, is available, free of charge, from the Studio Technologies' website. It's a fast and simple means of configuring, revising, saving, and loading a unit's operating parameters. A future release of STcontroller will support MacOS® operating systems.

The Model 236's front panel includes eight rotary controls (encoders) which are used to adjust the level of the Dante input signal sources as they create an audio mix that is fed to both the analog and Dante digital headphone outputs. Using RGB (red-green-blue) LEDs, each rotary encoder is illuminated and can display whether or not signal is present on its associated audio input channel. Two additional rotary controls allow adjustment of sidetone level and the overall level of the analog headphone output.

Seven pushbutton switches allow the user to control the status of the main outputs (digital and analog) as well as the six talkback functions. Extensive configuration choices allow the operation of the talkback pushbuttons and associated output channels to be optimized to meet the needs of specific applications. They can be independently configured for talkback, talent cueing (IFB), call signal (20 kHz tone), and other related actions.

The Model 236's one main and six talkback pushbutton switches are illuminated to display their operating status. For performance confirmation an integrated sidetone function allows audio coming from the headset's microphone to be returned to the headset output.

Audio Quality

The Model 236's audio performance is completely "pro." A low-noise, wide dynamic-range microphone preamplifier ensures that microphone audio quality is preserved and minimizes the chance of signal overload. The gain of the microphone preamplifier can be adjusted over a range of 20 to 65 dB in 1-dB steps. The output of the microphone preamplifier is routed to an analog-to-digital conversion (ADC) section that supports sampling rates of 48 and 96 kHz. The audio signal, now in the digital domain, routes through a 32-bit microprocessor and associated programmable logic and then on to the Dante interface section where it is packetized and prepared for transport over Ethernet. A total of ten Dante transmitter (output) channels are provided: one main, six talkback, one hot mic, and two headphone monitor output channels.

Audio input signals arrive into the Model 236 by way of nine Dante receiver (input) channels and pass into the Model 236's 32-bit logic circuitry. Two channels are associated with the main section, six are used for the talkback listen sources, and one can serve as an alternate microphone audio source. In addition to being used for typical headphone monitoring, the audio input associated with each talkback channel can be used with its talent cue (IFB) function. All channel routing, headphone level control, signal detection, and sidetone functions are performed within the digital domain. This preserves audio quality, enhances performance, and provides flexibility, allowing precise level control and mixing as well as eliminating the need for analog audio signals to pass through passive level controls (potentiometers). The audio signals destined for the headphone outputs are sent to a high-performance digital-to-analog converter and then on to robust driver circuitry.

Dante Audio-over-Ethernet

Audio data is sent to and received from the Model 236 using Dante audio-over-Ethernet media networking technology. As a Dante-compliant device, the Model 236's ten Dante transmitter (output) channels and nine Dante receiver (input) channels can be assigned (routed or "subscribed") using the Model 236's Dante Controller software application. The Dante transmitter and receiver channels support 32 Dante flows, 16 in each direction, which ensure no flow limitation. The digital audio's bit depth is up to 32 with a sample rate of 48 or 96 kHz. Bi-color LEDs, located on the unit's back panel, provide status indications of the Ethernet network and Dante interface performance.
The Model 236 is compliant with the AES67 interoperability standard. In addition, the unit is compatible with Audinate's Dante Domain Manager™ (DDM) software application. DDM offers an enhanced set of network control and monitoring features, making it ideal for security-conscious applications. This may also allow the Model 236's audio channels to support SMPTE® ST 2110-30.

Ethernet Data and PoE

The Model 236 connects to one or two local area networks (LANs) by way of two Gigabit ("GigE") twisted-pair Ethernet interfaces. The 1000BASE-T interconnections are made by way of Neutrik® etherCON RJ45 connectors. While compatible with standard RJ45 plugs, etherCON allows a ruggedized and locking interconnection for harsh or high-reliability environments. The two Ethernet interfaces can be configured, using the Dante Controller software applications, to serve in Dante Switched or Redundant modes.

The Model 236's operating power can be provided by way of its Primary-PoE Ethernet interface using the 802.3af Power-over-Ethernet (PoE) standard. PoE allows fast and efficient interconnection with the associated data network. Alternately, an external source of nominal 12 volts DC can be connected to power the unit. If both are connected then PoE will serve as the active power source.

Future Capabilities and Firmware Updating

The Model 236 was designed so that its capabilities and performance can be easily enhanced in the future. A USB type A connector, located on the unit's back panel, allows the application firmware (embedded software) to be updated using a USB flash drive. The Model 236 uses the Broadway™ integrated circuit from Audinate to implement the Dante interface. The firmware in this integrated circuit can be updated via an Ethernet connection helping to ensure that its capabilities remain up to date.

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Product Specs

Network Audio Technology Type: Dante audio-over-Ethernet
AES67-2013 Support: yes, selectable on/off
Dante Domain Manager (DDM) Support: yes
Ethernet Interface Configuration: Switched or Redundant
Bit Depth: 16, 24, or 32
Sample Rate: 48 or 96 kHz (no pull-up/down supported)
Dante Receiver (Input) Channels: 9
Dante Transmitter (Output) Channels: 10
Dante Audio Flows: 32; 16 transmitter, 16 receiver
Internal Digital Audio Processing: 32-bit, fixed
Input-to-Output Audio Processing Latency: <200 uSec
Nominal Dante Receiver (Input) and Transmitter
(Output) Level: –20 dBFS
Network Interfaces 2, Primary-PoE and Secondary
Type: 1000BASE-T (Gigabit Ethernet ("GigE")) per IEEE® 802.3ab (10 and 100 Mb/s not supported)
Power-over-Ethernet (PoE): per IEEE 802.3af (applicable to Model 236's Primary-PoE network connection only)
Analog Microphone Input Compatibility: dynamic or phantom-powered microphones
Type: balanced, capacitive coupled
Impedance: 3.6 k ohms, nominal
Gain: 20 to 65 dB in 1-dB steps
Frequency Response: 20 Hz to 22 kHz, +0/–1 dB
Distortion (THD+N): <0.0004%, 1 kHz, –4 dBFS output,
20 dB gain, 22 kHz BW
Dynamic Range: 120 dB, ref 0 dBFS output, 20 dB gain, A-weighted
Phantom Power: P48 per IEC 61938 standard, on/off selectable with status LED
Analog Microphone Output Type: passive via two 200 ohm resistors from microphone input (will pass phantom power in either direction)
Muting: solid-state relay contacts, 60 dB attenuation @ 1 kHz
Headphone Output Type: analog 2-channel (stereo)
Compatibility: stereo (dual-channel) or monaural (single-channel) headphones, headsets, or earpieces with nominal impedance of 50 ohms or greater
Maximum Output Voltage: 3.0 Vrms, 1 kHz, 150 ohm load
Frequency Response: 20 Hz to 20 kHz, +0/–1 dB
Dynamic Range: >102 dB, A-weighted
Distortion (THD+N): <0.025%, measured at 1 kHz, 0 dBu output
Talkback Input Low-Pass Filter (LPF) Function: active only when specific talkback channel has tone detect function enabled
Type: digital, 8-pole Butterworth (48 dB/octave)
Cutoff: –3 dB at 12 kHz
18 kHz and 20 kHz Tone Outputs Type: sine wave
Level: –20 dBFS
Frequency Accuracy: <10 ppm
Distortion: <0.0001%
Tone Detect Function Receive Frequency: ≥15 kHz nominal to upper end of frequency response, within audio channel
Receive Level: –27 dBFS minimum
Send Frequency: 20 kHz
Send Level: –20 dBFS
IFB (Dims Main Audio) Function Activation: in-band tone detection per Tone Detect function
Attenuation (Dim): 15 dB, fixed
Call Light Function Activation: in-band tone detection per Tone Detect function
Remote Control Inputs Number: 4
Function: configurable, can mimic the action of the main and talkback button functions
Type: active low, 1 mA maximum, input pulled up to 3.3 volts DC via 3.4 k ohm resistors
Limitation: Remote Control Input 2 shares hardware pin with Tally Output (only one function can be configured at a time)
Tally Output Functions: follows the status of the main output
Type: active high, 3.3 volts DC in series with 130 ohm resistor (25 mA maximum)
Limitation: tally output shares hardware pin with Remote Control Input 2 (only one function can be configured at a time)
Connectors Analog Microphone Input: 3-pin female XLR
Analog Microphone Output: 3-pin male XLR
Headphone Output: 3-conductor ¼-inch jack
Ethernet: 2, Neutrik NE8FBH etherCON RJ45 receptacles
DC Input: 4-pin male XLR (pin 1 negative, pin 4 positive)
USB: type A receptacle (used only for updating firmware)
Remote Control Inputs / Tally Output: 2, 3-pin headers located on the main circuit board
Headphone Output: 3-pin header located on the main circuit board
DC Output: 3-pin header located on the main circuit board
Analog Microphone Input: 3-pin header located on the analog circuit board
Spare Connector Locations Number: 2
Allows a Studio Technologies' cable assembly or option module to be installed. Also compatible with Neutrik NC*D-L-1 connectors (*=3F, 3M, 5M, 6F, 6FS, etc.).
Configuration requires Studio Technologies' STcontroller software application, version 2.10.00 and later
Power Sources Power-over-Ethernet (PoE): class 3 (mid power, ≤12.95 watts) per IEEE 802.3af
DC Input: 10 to 18 volts DC, 0.55 A maximum at 12 volts DC (can be powered by optional PS-DC-02)
Environmental Operating Temperature: 0 to 50 degrees C (32 to 122 degrees F)
Storage Temperature: –30 to 70 degrees C (–22 to 158 degrees F)
Humidity: 25 to 85%, non-condensing
Altitude: not characterized
Dimensions (Overall) 6.5 inches wide (16.5 cm)
2.9 inches high (7.4 cm)
4.9 inches deep (12.5 cm)
Deployment intended for tabletop applications
Weight 2.1 pounds (0.95 kg)

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