Studio Technologies MODEL-220

The 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.

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

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: ¼-inch 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 k ohms, 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 k ohms, 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 k ohms, nominal
Nominal Level: –10 dBu

Main Output:
Type: balanced, transformer-coupled
Nominal Level: –2 dBu
Maximum Level: +20 dBu into 2 k ohms
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 (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)

TMGR# MODEL-220