Overview
Studio Technologies Model 33A Talent Amplifier
The Model 33A Talent Amplifier is a self-contained listen-only "beltpack" unit intended for use by on-air talent or production personnel. It's directly compatible with the Studio Technologies' Model 2A Central Controller as well as other standard IFB or party-line intercom circuits. The Model 33A is powered by, and receives audio from, the connected IFB or intercom circuit. A single 3-conductor microphone-type cable links the Model 2A's talent amplifier output with the Model 33A's input. Each Model 33A 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 2A Central Controller. The Model 33A's output is intended to be connected to talent earpieces or headsets. 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 33A 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 33A to be installed in a permanent location.
Features
- Controls allow mix of Channels 1 and 2
- ¼-inch and 3.5 mm output connectors
- Excellent audio quality
- Low DC power consumption
- Compatible with Model 2A Central Controller
- Compact, lightweight package
Specifications
- Indicator Light: red LED indicates operation of internal power supply
- Connectors:
- Input: 3-pin female XLR
- Loop Through: 3-pin male XLR
- 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
- Pin 2: DC with channel 1 audio (dual-channel circuits) or DC only (single-channel circuits)
- Pin 3: channel 1 audio (single-channel circuits) or channel 2 audio (dual-channel circuits)
- Power Requirement: 18-35 Vdc, 15 mA quiescent, 40 mA 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 Vpp, 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
- Dimensions (Overall):
- 3.25 inches wide (8.3 cm)
- 1.8 inches high (4.6 cm)
- 3.95 inches deep (10.0 cm)
- Weight: 0.6 pounds (0.3 kg)
