Studio Technologies Model 240 Producer's Console

Product Code: ST-M240

Key Features
The Model 240 Producer's Console is designed for producers, directors, or those who need to efficiently communicate with on-air broadcast personnel and related production crew. The unit provides the resources of a 4-channel talent cueing ("IFB") central controller combined with a 2-channel party-line (PL) intercom user station. Incorporating numerous configurable features and extensive upgrade flexibility, the Model 240 can meet the exacting demands of this important and highly specialised field. Compatible with broadcast and production audio and intercom system environments, the tabletop unit is well suited for applications including sports and entertainment television programming, radio and TV news, and corporate events. While the Model 240 is sophisticated on the inside, users are presented with a simple-to-use, great sounding "tool" to help them do their job better.
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  • Features
  • Overview
  • Technical Specs
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Studio Technologies Model 240 Producers Console

Headset for Microphone and Phones

A 5-pin XLR connector is provided for connection of a broadcast-style headset. The selected headset should contain a dynamic microphone and a single or dual earpiece. While not directly intended for on-air applications, the microphone preamplifier is excellent, providing low-noise, low-distortion, and high headroom performance. For optimal sound quality the gain of the mic preamp can be configured from among five choices. A sophisticated audio compressor circuit follows the microphone preamplifier to minimize the chance of signal overload. The headphone output features low-noise circuitry with plenty of all-important headroom. Many parametres associated with the headphone output can be configured to meet user requirements.

Main Outputs

Four main outputs are provided which can be independently configured to meet the specific needs of broadcast and production applications. They can be, at their most basic, considered talkback channels that, under pushbutton control, contain the signal from the connected headset's microphone. When an additional audio source is selected for use by a main output a composite program/interrupt talent cueing signal is created. Each main output provides a line-level signal that's transformer and capacitor coupled for superior compatibility and reliability. Resistors in series with the output signals allow passive mixing of multiple main output channels. And not to be ignored is the audio quality: clean, quiet, and "click free."

Intercom Interface

The intercom interface is compatible with single- and dual-channel party-line (PL) intercom circuits commonly found in broadcast, production, and industrial applications. Direct connections with PL circuits associated with RTS™ TW and Clear-Com® intercom systems is assured. The Model 240 can be configured to serve in a listen-only mode where PL intercom receive audio is routed to the headphone output. Main outputs 3 and 4 can also be independently selected to send talk audio to the intercom circuit. The latter makes the Model 240 function as a full 2-channel intercom user station. The intercom circuit can also provide the power required by the Model 240.

Line-Level Audio Inputs

Two line-level audio inputs allow the connection of a variety of cue signals. The inputs are capacitor and transformer coupled, ensuring consistent and reliable interfacing with almost any audio source found in the field. Two trim potentiometres allow adjustment of the input signal level. The two line inputs can be configured for use with the four main outputs as well as with the headphone output. The four main outputs can be independently configured to use this "program" audio to create talent cue signals. While line input 1 is always assigned to main outputs 1 and 3, the choice of line input 1 or line input 2 is independently assignable to main outputs 2 and 4. Each main output can then be configured for how it uses its associated program audio source. They can be set to have no program audio, continuous program audio that combines with talk audio, program audio that's fully muted when talk is active, or program audio that's "dimmed" (attenuated by 15 dB) when talk is active. In this way four independent "dry" (non-powered) talent cue (IFB) channels can be easily created.

Headphone Output

A 2-channel (stereo) headphone output is provided for monitoring program or intercom audio signals. Physically the headphone output connections are part of the 5-pin XLR headset connector located on the Model 240's back panel. Each headphone output channel can be independently configured to monitor the two line-level inputs or the two intercom interface channels. Two rotary controls allow the user to independently adjust the level of the left and right headphones output channels. A configuration setting allows the headphone output to be placed in monaural mode, mixing the signals selected for the left and right channels. This can be useful when single earpiece ("single-muff") headsets or in-ear transducers are used. A sidetone function is also available, allowing audio from the microphone input to be routed to the left and/or right headphone channels. A separate rotary control is provided for the user to adjust the side-tone level.

Provision has also been made to allow two additional line-level audio sources to be connected and routed to the headphone output channels. Using optional line input cards mounted in the back panel openings of the Model 240, functions such as announcer/commentator pre-fader listen can be implemented.


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.

Trade Terms
The above item is non-returnable, unless defective. Please ensure part numbers and descriptions are as required before placing this order. If any confirmation or information is required please contact AV Sales on 1800 00 77 80.
General Audio:
Frequency Response: 20 Hz-20 kHz, +0/ 1 dB, mic in/main out
Distortion (THD+N): less than 0.04%, measured at 1 kHz, mic in/main out
S/N Ratio: 87 dB, referenced to 42 dBu mic in/0 dBu main out
Dynamic Range (A-weighted): 113 dB, line in/main out
Microphone Input/Preamplifier:
Type: electronically balanced
Input Impedance: 2 k ohms
CMRR: 83 dB @ 60 Hz, 76 dB @ 20 kHz, 40 dB gain
Gain Range: 35 to 55 dB, adjustable in 5-dB steps
Compatibility: balanced and unbalanced dynamic microphones
Compressor (Microphone Input):
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 with series capacitors
Impedance: 10 k ohms
Nominal Level: 10 to +6 dBu, adjustable
Main Outputs: 4
Type: transformer-coupled with series capacitors and isolation resistors
Impedance: 600 ohms
Nominal Level: 0 dBu
Maximum Level: +20 dBu, line in/main out
Aux Headphone Line Inputs: 2
Implementation: requires one or two optional line input cards (Studio Technologies order code 31084) to be installed into back panel
Type: balanced, transformer-coupled
Impedance: 10 k ohms, nominal
Nominal Level: +4 dBu
Headphone Output: 1, stereo
Compatibility: intended for connection to mono or stereo headsets or earpieces with nominal impedance of 100 ohms or greater
Type: voltage driver
Maximum Output Voltage: 12 Vpp, 150 ohm load
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 party-line (PL) intercom systems such as from RTS and Clear-Com
Impedance: 10 k ohms
Nominal Receive Level: 10 dBu
Nominal Talk Level: 10 dBu
Sidetone (Null): 0 to 18 dB, adjustable
Relay Contacts: 5
Functions: one each follows main output status and one any talk active
Contacts: form A (normally open, not shorted)
Rating: 100 mA, 60 V AC/DC, maximum
Contact Resistance: 16 ohms, maximum
Access: requires user-implemented connector scheme
Multi-Unit Support: Two units can be interconnected via internal RS-485 data bus. Audio summing is performed passively using external wiring.
Power Sources:
Intercom Interface: 24-32 Vdc, 150 mA
External: 20-30 Vdc, 125 mA @ 24 Vdc. Each unit shipped with a universal input/24 Vdc output power supply.
Line Inputs, Intercom Interface: 3-pin female XLR
Main Outputs: 3-pin male XLR
Headset (mic/phones): 5-pin female XLR
24 Vdc Power In: 2.1 x 5.5 mm coaxial power jack with locking bushing, compatible with Switchcraft S760K plug
Spare Connector Locations: 4
For use by Studio Technologies' wide range of option modules. Also allows up to four Neutrik NC*D-L-1 connectors to be installed (*=3F, 3M, etc.).
Dimensions (Overall):
8.1 inches wide (20.6 cm)
3.3 inches high (8.4 cm)
8.5 inches deep (22.4 cm)
Weight: 4.5 pounds (2.1 kg)

Specifications subject to change without notice.

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