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Studio Technologies Model 233 Announcers Console

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Product Code: 9999-06384
Studio Technologies Model 233
$1,195.00
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Studio Technologies Model 233 Announcers Console

The Studio Technologies Model 233 Announcers Console is designed to serve as the audio control hub for announcers, commentators, and production personnel. Compatible with essentially all broadcast and production audio system environments, this tabletop unit is suited for numerous applications including on-air television and radio broadcasting.

The Studio Technologies Model 233 Announcers Console performs an outstanding role in stadium announce applications. The Studio Technologies Model 233 is compatible with essentially all broadcast and production audio system environments. Standard connectors are used to interface microphone, headphone, on-air, talkback, line input, and intercom signals. Whether it's the mic preamplifier, audio switching, talkback signals, intercom interfacing, or headphone cue feed, superior audio quality is maintained throughout. A microprocessor provides the Studio Technologies Model 233's logic power, allowing precise control of the unit's operation. With extensive flexibility built in, creating the desired operating configuration is a simple matter. While the operating features of the unit can be carefully tailored, the user is presented with an easy-to-use set of controls and indicators. A wide range of resources, great performance, and simplicity during use—these are the hallmarks of the Studio Technologies Model 233.

The Studio Technologies Model 233 is a truly "next-generation and then some" product. Exhaustive research into the needs and desires of field production personnel was integral to its creation. Providing a veritable "tool kit" of features, the unit supports a wide variety of applications that include on-air television and radio broadcasting, stadium announcement, and simultaneous interpretation. In addition, with the unit's broad range of capabilities many other specialized "behind-the-scenes" applications can also be implemented.

Microphone Input
A high-performance microphone preamplifier circuit provides low-noise/low-distortion amplification over a 20 to 60 dB gain range. The gain is adjustable in 10 dB steps. The input is compatible with balanced dynamic and condenser microphones. The microphone power source is 48 V nominal and meets the worldwide P48 phantom power standard. An LED indicator serves as an aid for optimizing the preamplifier's gain setting. The output of the microphone preamplifier is used by the main output as well as being routed to the compressor circuit that supports the talkback functions.

Main Output
The Studio Technologies Model 233 provides a main output that is designed to serve as the on-air, stadium announcement, or other primary audio feed. Nominally –2 dBu, it is designed as a fully professional interface with high output capability, low distortion, and low noise. The output circuitry features a high-performance output transformer expressly designed for professional audio applications.

Talkback Functions
The talkback functions are intended to provide personnel associated with production trucks, control rooms, live-performance, and sports venues with talent-originated cue signals. The Studio Technologies Model 233 contains two pushbutton switches that control the talkback functions. Associated with each pushbutton switch is a dedicated line-level talkback output. Each pushbutton switch can also be configured to send audio to one specific channel associated with the Studio Technologies Model 233's dual-channel intercom interface. The line-level talkback outputs are transformer-coupled with a +4 dBu nominal signal level. They contain resistors in series with the output connectors, allowing line-level talkback outputs from multiple units to be directly "summed." For non-on-air applications, a special Studio Technologies Model 233 feature set can be enabled by placing the unit in its "production" mode. This software-based mode allows the main output to be used as an additional talkback output. This feature makes the unit even more powerful when used in live-event applications, such as serving as a master console for an orchestra conductor or production director. With all the available talkback flexibility, the exact needs of many specific applications can easily be met. And, of course, whatever configuration is implemented, the audio quality will be excellent.

Flexibility
A large part of the Studio Technologies Model 233's unique power is the ability to configure the operation of the main output and talkback functions. To meet the needs of the many specific broadcast and production applications, a variety of button operating modes is available. The main output button can be selected to operate from among four modes. In the "push-to-mute" mode the button performs a momentary mute of the main output. In this way a "cough" button function is created, something typically required for television sports broadcasting. In the "push-to-talk" mode the button provides a momentary active function for the main output. This mode would be appropriate for applications such as stadium announcement. An alternate action "latching" configuration allows the button to enable or disable the main output as desired. This is useful in radio broadcasting, announce-booth, or voice-over applications. The fourth mode provides a hybrid function, supporting both push-to-talk and tap-to-enable/tap-to-disable operation. This operation is similar to that found in many broadcast intercom system user stations. The two buttons associated with the talkback functions can be configured to operate from either of two modes. One of the modes supports a "push-to-talk" function. This is typically used for on-air broadcast applications. The other mode provides a hybrid function, the operation of which is discussed in the previous paragraph. The hybrid mode is especially useful when the Studio Technologies Model 233 is used in a production-support application. The main button mode configures how the main output, when it is in the "latched" on state, responds to talkback activity. One choice momentarily turns off the main output when talkback is active, returning the main output to the on state when the talkback function has ended. The other choice "unlatches" the main output in response to a talkback function.

Cue Sources
The Studio Technologies Model 233 supports the connection of up to four external audio sources, each of which can be selected for routing to the stereo headphone output. The sources are line input 1, line input 2, intercom channel 1, and intercom channel 2. Each source can be individually assigned to the left channel, the right channel, or both the left and right channels. This allows a wide variety of stereo and mono headphone mixes to be created. For application flexibility, two line-level audio sources can be connected to the Studio Technologies Model 233. Possible signal sources include off-air receivers, wireless IFB systems, and audio consoles. The connected signals can be from two independent sources, or could be from a stereo audio feed such as would be associated with a broadcast music event. Two level trim potentiometers, located on the bottom of the unit, allow signals with wide nominal audio levels to be cleanly interfaced. Audio signals associated with a single- or dual-channel intercom system can be routed to the headphone output. The Studio Technologies Model 233's intercom interface is compatible with standard party-line intercom systems from manufacturers such as RTS® and Clear-Com®. A broadcast-type IFB (interrupted foldback) circuit can also be connected to the intercom input. This "listen only" signal is often found in television broadcast applications.

Headphone Output
Three rotary controls are provided for user adjustment of the headphone output. Two of the controls adjust the levels of the externally connected sources. The third control is used to set the level of the side-tone function. For flexibility the actual functioning of the two controls associated with the external sources is configurable. For traditional on-air sports applications they can be selected to the dual level control mode which provides independent control of the left and right channel volume. For use with stereo cue signals, or to support user preference, the level/balance mode can be selected. In this mode one control adjusts the overall level of both the left and right channels, while the other allows adjustment of the left/right level balance. To help minimize the chance of broadcast cues being missed, both level control modes can be configured so that a minimum headphone output level is maintained. Alternately, the headphone output can be set to fully mute when these controls are at their minimum position. A headphone control reverse mode is provided specifically for on-air television applications where a headset with boom microphone is used. The reverse mode ensures that no matter which headset orientation is used by the talent, the two "pots" controlling the external sources will always work intuitively. This will result in a comfortable work environment, allowing the "left" control to impact the level to the talent's left ear while the "right" control impacts the right. The sidetone level control is dedicated to adjusting the level of the mic audio signal that's routed to the headphone outputs. Configuration switches allow which of the headphone outputs—left, right, or both—will receive the sidetone signal. When the sidetone level control is set to its minimum position the sidetone level is always set to be fully muted. Provision has been made to support applications where a monaural cue feed is desired. A configuration switch allows the summing (combining) of the selected left and right headphone sources. In addition to creating a dual-channel mono output it also allows the level controls to be configured as a simple 3-channel mixer. The headphone output is optimized to meet the needs of contemporary headphones and headsets. Specifically, the output circuits act as voltage, rather than power, drivers. In this configuration they can provide high output levels with very low distortion and noise, along with minimal current consumption. The output circuits are configured to safely drive stereo or mono loads. This ensures that all types of headphones, headsets, and earpieces can be directly connected.

Intercom Interface
Of special note is the Studio Technologies Model 233's sophisticated intercom interface. It's designed to work correctly with industry-standard single- and dual-channel party-line intercom systems, including those from RTS and Clear-Com. An intercom line connected to the Studio Technologies Model 233 can serve three functions: providing cue audio signals to the headphone output, allowing talkback audio to be sent to intercom users, and acting as a Studio Technologies Model 233 power source. Audio signals present on the single- or dual-channel intercom line can be flexibly routed to the stereo headphone output. Talkback audio, controlled by the two talkback pushbutton switches, can be sent to either or both of the intercom channels. Trim potentiometers, located on the bottom of the unit, allow adjustment of the talkback-to-intercom sidetone (null) level. Other announcer console products can exhibit talkback-to-intercom-related audio oscillations ("squeals") that end up in the headphone output. A unique Studio Technologies Model 233 feature ensures that this will never occur. This is accomplished by means of a special "auto-terminate" circuit that becomes active whenever an intercom line is not connected to the Studio Technologies Model 233.

Studio Technologies Model 233 Announcers Console Features

  • Microphone preamp with selectable gain and 48 V phantom power
  • Two line-level inputs
  • Three pushbutton switches offer programmable "click-free" audio path control
  • Transformer-balanced main output
  • Two line-level talkback outputs
  • Dual-channel intercom interface with "auto-terminate"
  • Stereo headphone monitoring of selectable sources and integrated sidetone
  • Three rotary headphone output level controls for external sources and sidetone
  • Microcontroller-directed audio routing
  • Tally status output and auxiliary relay contacts
  • Powered by intercom or by supplied external DC source
  • All configuration switches and trim potentiometers accessible via the bottom of the enclosure

Studio Technologies Model 233 Announcers Console Specifications

  • General Audio:
    • Frequency Response: 10 Hz-20 kHz, ±0.2 dB, Mic In/Main Out
    • Distortion (THD+N): 0.008%, Measured at 1 kHz, Mic In/Main Out
    • S/N Ratio: 86 dB, Referenced to –42 dBu Mic In/–2 dBu Main Out
    • Dynamic Range (A-weighted): 108 dB
  • Connectors:
    • Mic In, Line In 1 & 2, Intercom Interface: 3-Pin Female XLR
    • Main Out, Talkback Out 1 & 2: 3-Pin Male XLR
    • Headphone Out: ¼-inch 3-Conductor Phone Jack
    • 24 Vdc Power In: 2.1 x 5.5 mm Coaxial Power Jack with Locking Bushing, Compatible with Switchcraft S760K Plug
  • Microphone Input/Preamplifier:
    • Type: Electronically Balanced
    • Input Impedance: 2 k ohms, Nominal
    • CMRR: >80 dB, 20 Hz-20 kHz, 40 dB Gain
    • Gain Range: 20 to 60 dB, Nominal, Adjustable in 10 dB Steps
    • Compatibility: Dynamic or Phantom-Powered Mics
    • Phantom Power: 48 Vdc, Nominal, Meets IEC 61938 P48 Standard
  • Compressor:
    • Threshold: 2 dB Above Nominal Level
    • Attack/Release Time: 2 mSec/100 mSec
    • Slope: 5:1
    • Status LED: Compressor Active
  • Line Inputs: 2
    • Type: Balanced, Transformer-Coupled
    • Impedance: 10 k ohms
    • Nominal Level: –12 dBV to +6 dBu, Adjustable
  • Intercom Interface:
    • Type: 2-Channel, Unbalanced (pin 1 Common; pin 2 DC with Channel 1 Audio; pin 3 Channel 2 Audio)
    • Compatibility: Single- and Dual-Channel Intercom Systems such as from RTS® and Clear-Com®
    • Impedance: 10 k ohms
    • Nominal Receive Level: –10 dBu
    • Nominal Talkback Level: –10 dBu
    • Sidetone (Null): 0 to –18 dB, Adjustable
  • Main Output:
    • Type: Balanced, Transformer-Coupled
    • Nominal Level: –2 dBu
    • Maximum Level: +20 dBu into 2 k ohms
    • Impedance: 100 ohms
    • Line-Level Talkback Outputs: 2
    • Type: Transformer-Coupled with Series Capacitors and Isolation Resistors
    • Impedance: 600 ohms
    • Nominal Level: +4 dBu
    • Maximum Level: +11 dBu (Compressor Restricts Maximum)
  • Headphone Output: 1, Stereo
    • Compatibility: Intended for Connection to Mono or Stereo Headphones or Headsets with Nominal Impedance of 100 ohms or Greater
    • Type: Voltage Driver
    • Maximum Output Voltage: 12 Vpp, 150 ohm Load
  • Power Sources:
    • Intercom Interface: 24-32 Vdc, 125 mA
    • External: 24 Vdc, 90 mA @ 24 Vdc; Acceptable Range 20-30 Vdc. Each Unit Shipped with a Universal Input/24 V dc Output Power Supply.
  • Dimensions (Overall):
    • Width: 8.1 inches (20.6 cm)
    • Height: 3.3 inches (8.4 cm)
    • Depth: 8.5 inches (21.6 cm)
  • Weight: 4.5 pounds (2.0 kg)

Studio Technologies Model 233 Announcers Console Includes

  • 1 x Studio Technologies Model 233 Announcers Console
  • 1 x 24V DC Power Supply
  • 1 x Button Label Sheet
  • 1 x User Guide
  • 3 Year Warranty
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