Studio Technologies MODEL-32A
IFB Plus Talent Amplifier

MODEL-32A

The Model 32A Talent Amplifier is a self-contained listen-only belt pack unit intended for use by on-air talent or production personnel. It is directly compatible with the Studio Technologies Model 2 Central Controller as well as other standard IFB or party-line intercom circuits. The Model 32A is powered by, and receives audio from, the connected IFB or intercom circuit. A single 3-conductor microphone-type cable links the Model 2’s talent amplifier output with the Model 32A’s input.

Each Model 32A contains both a male and a female 3-pin XLR-type connector, allowing simple “loop through” connection of multiple units. Up to four talent amplifiers can be connected to, and powered by, a single Model 2 Central Controller. A source select switch allows audio from either Model 2 channel 1 or Model 2 channel 2 to be routed to the monaural output. For flexibility the audio output is provided on both ¼-inch and 3.5 mm jacks. An LED indicator lights whenever input power is present, providing setup assistance and user confidence. The Model 32A is housed in a lightweight, yet rugged, aluminum housing. A belt clip allows it to be directly attached to clothing or accessories. An optional mounting adapter is available to allow the Model 32A to be installed in a permanent location.

The Model 32A’s output is intended to be connected to talent earpieces or headsets. The user is provided with a source select switch and a rotary level control. The switch is used to select which of the two audio inputs is routed to the output. In the switch’s channel 1 position audio associated with XLR pin 2 is sent to the output. When the switch is set to its channel 2 position audio associated with XLR pin 3 is selected. By design, the Model 32A’s level control cannot be set to fully attenuate (mute) the audio output. This helps to minimize the chance that users will never accidentally miss important cues from directors or producers. While audio quality is not normally considered a factor in IFB or intercom systems, the Model 32A is built to pro audio standards. This helps to ensure that the best possible audio reproduction is provided.

The Model 32A is an update of the popular Model 32 Talent Amplifier. The Model 32A includes the addition of a 3.5 mm output jack, along with updated internal circuitry. In addition to working with the Model 2 Central Controller, the Model 32A is compatible with virtually every standard IFB and party-line intercom circuit, including those associated with equipment from Telex®/RTS®, Clear-Com®, and Studio Technologies. This type of circuit typically uses a 3-pin XLR-type connector for interfacing with connected equipment. Electrically, XLR pin 1 serves as common for DC power and audio; pin 2 provides DC power and, in the case of a dual-channel circuit, DC power and channel 1 audio; pin 3 provides channel 2 audio for dual-channel systems, or channel 1 audio in single-channel systems.

Specifications:

• Applications: directly compatible with talent amplifier output on Model 2 Central Controller. Also compatible with standard single- and dual-channel IFB and party-line intercom circuits
• Connectors:
  Input: 3-pin female XLR-type
  Loop Through: 3-pin maleXLR-type
  Output: ¼-inch and 3.5 mm 2-conductor jacks; sleeve common, tip “hot,” ring not used
• IFB/Intercom Input Wiring Scheme:
  Pin 1: common for DC and audio
  Pin2: DC with channel 1 audio (dual-channel circuits) or DC only (single-channelcircuits)
  Pin 3: channel 1 audio (single-channel circuits) or channel 2audio (dual-channel circuits)
  Power Requirement: 18-35 volts DC, 15 milliameres quiescent, 40 milliamperes maximum
• Output:
  Compatibility: intended for connection to mono (2-conductor)headsets or earpieces with nominal impedance of 150 ohms or greater
  Type:voltage driver
  Input/Output Gain: 28 dB, maximum
  Maximum Output Voltage:8 volts peak-to-peak, 1 kHz, 150 ohm load
  Frequency Response: 40 Hz-20 kHz,±1 dB, 150 ohm load
  Distortion (THD+N): 0.03%, 1 kHz, 150 ohm load, 0 dBu out
• Options: Model 36 Mounting Adapter allows Model 32A to be permanently mounted
• Dimensions (Overall):
  3.25 inches wide (8.3 cm)
  1.80 inches high(4.6 cm)
  3.95 inches deep (10.0 cm)
• Weight: 0.6 pounds (0.3 kg)

Our Part #  MODEL-32A