Studio Technologies Model 233 Announcer Console

The Model 233 Announcer's Console is designed to serve as the audio control "hub" for announcers, commentators, and production personnel. The tabletop unit is suited for numerous applications including on-air television and radio broadcasting. The Model 233 will also perform an outstanding role in stadium announce applications. The 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.

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

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
• Spare Connector Locations: 2
• 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
• Auxiliary Relay:
  • Function: software configurable
  • Contacts: 2, form C (Common, Normally Closed, Normally Open)
  • Rating: 1 A, 30 W (resistive)
  • Access: requires user-implemented connector scheme
• Tally Output: 3.5 Vdc, 12 mA maximum, nominal
• 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 Vdc output power supply.
• Dimensions (Overall):
  • 8.1 inches wide (20.6 cm)
  • 3.3 inches high (8.4 cm)
  • 8.5 inches deep (21.6 cm)
• Weight: 4.5 pounds (2.0 kg)