Studio Technologies MODEL-220
Model 220 Announcer's Console


The Studio Technologies Model 220 Announcer's Console is an enhanced audio control "hub" for announcers, commentators, and production personnel. Compatible with essentially all broadcast and production audio system environments, the tabletop unit is a great choice for on-air television and radio broadcast.

Flexible Setup
Three pushbutton switches—Main, Talkback 1, and Talkback 2—operate under microprocessor control to offer unmatched flexibility and "click-free" audio routing. The Main button controls the main output with operating modes that include push-to-mute (cough), push-to-talk, and latching. The Talkback 1 and Talkback 2 buttons control dedicated line-level outputs to provide talent-originated cue signals to production personnel. For non-on-air applications a special feature set referred to as "production" mode can be enabled. Simple customization of the button labels ensures the user is presented with an easy-to-use set of controls and indicators.

Superior Audio
Featuring a studio-inspired low-noise/low-distortion preamplifier design, adjustable gain, and 48 volt phantom power, the Model 220 is compatible with balanced dynamic and condenser microphones. With high output capability and the use of an output transformer expressly designed for professional audio applications, the main output offers broadcast-quality audio as the on-air or other primary audio feed.

Powerful Monitoring
The headphone output's circuitry provides high output levels with very low distortion and noise. The user can monitor up to four external audio sources: IFB channel 1, IFB channel 2, line input 1, and line input 2. Possible signal sources for the line-level inputs include off-air receivers, wireless IFB systems, and audio consoles. Each source can be individually assigned to the left, right, or both channels of the binaural headphone output. Two rotary controls allow the user to adjust the headphone output levels.

Studio Technologies Model 220 Features:

  • Microphone preamp with selectable gain and 48 volt phantom power
  • Two line-level inputs
  • Broadcast IFB input
  • Three pushbutton switches offer programmable "click-free" audio path control
  • Transformer-balanced main output
  • Two line-level talkback outputs
  • Stereo headphone monitoring of selectable sources
  • Two rotary headphone output level controls
  • Microcontroller-directed audio routing
  • Auxiliary relay contacts
  • Powered by IFB or by external DC source
  • All configuration switches and trim potentiometers accessible via the bottom of the enclosure

Studio Technologies Model 220 Specifications:

  • General Audio:
    • Frequency Response:  20 Hz - 20 kHz, +/- 0.1 dB, mic in/main out
    • Distortion (THD+N):  0.008%, measured at 1 kHz, mic in/main out
    • S/N Ratio:  80 dB, referenced to –46 dBu mic in/–2 dBu main out
  • Connectors:
    • Mic In, IFB In, Line In 1 & 2:  3-pin female XLR-type
    • Main Out, Talkback Out 1 & 2:  3-pin male XLR-type
    • Headphone Out: 1/4" 3-conductor phone jack
    • 24 Vdc Power In:  2.1 x 5.5 mm coaxial power jack
  • Spare Connector Locations:  3
    • Allows up to three Neutrik NC*D-L-1 connectors to be installed (*=3F, 3M, 5F, 5M, 6F, 6FS, etc.)
  • Microphone Input/Preamplifier:
    • Type:  Electronically balanced
    • Input Impedance:  2 kOhms, nominal
    • 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
  • Compressor:
    • Threshold:  2 dB above nominal level
    • Attack/Release  Time: 2 mSec/100 mSec, nominal
    • Slope:  5:1, nominal
  • Line Inputs:  2
    • Type:  Balanced, transformer-coupled
    • Impedance:  10 kOhms, nominal
    • Nominal Level:  –12 dBV to +6 dBu, adjustable
  • IFB Input:
    • Type:  2-channel, unbalanced (pin 1 common; pin 2 DC with channel 1 audio; pin 3 channel 2 audio)
    • Impedance:  10 kOhms, nominal
    • Nominal Level:  –10 dBu
  • Main Output:
    • Type:  Balanced, transformer-coupled
    • Nominal Level:  –2 dBu
    • Maximum Level:  +20 dBu into 2 kOhms
    • Impedance:  100 ohms, nominal
  • Line-Level Talkback Outputs:  2
    • Type:  Transformer-coupled with series capacitors and isolation resistors
    • Impedance:  600 Ohms, nominal
    • Nominal Level:  +4 dBu
    • Maximum Level:  +11 dBu (compressor restricts maximum)
  • Headphone Output:  1, binaural (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:  8 Vpp, 150 Ohm load
  • Auxiliary Relay:
    • Contacts:  2, form C (Common, Normally Closed, Normally Open)
    • Rating:  1 A, 30 W (resistive)
  • Power Sources:
    • IFB:  24-32 Vdc, 125 mA
    • External:  24 Vdc nominal, 80 mA; acceptable range 20-30 Vdc. All units include a universal input/24 Vdc output power supply.
  • Dimensions (WxHxD):  8.1" x 3.3" x 8.5" (20.6cmx 8.4cm x 22.4cm)
  • Weight:  4.5 pounds (2.1 kg)

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