STS-A31H
Speech transfer amplifier
The Contacta STS-A31H Amplifier is a replacement or spare amplifier for use with the Contacta K001L, K002L, and K003L speech transfer systems. The amplifier has advanced processing features such as Automatic Gain Control, compression, energy saving and noise gate.
This unit is lightweight and discrete making installation and replacement a simple process. The front two LED indicators display status and power.
Features
Integrated audio and induction loop amplifier.
Energy-saving “green” standby mode is automatically used, achieving a power saving of up to 80%
Advanced audio processing features
AGC, compression, and noise gate£
Constant-current loop drive (with engineer adjustable loop drive level)
Isolated audio line input / output allows additional ohmically isolated line level audio input or output to recording system (factory options, not available together)
Dual LED column indicators aid adjustments and indicate power and status
Continuous self-testing means that no specialized equipment is required to confirm functionality
DC Power: 2.1mm DC jack
Power and status indication: Green/red LED column
Delivery Includes
1 STS-A31H Amplifier
Technical Data
Supply voltage: 12-14 VDC
Quiescent current: 100mA typical
Operating current: 2A typical on speech peaks
Power switch: Push on - push off (tact switch under membrane)
Microphones: Electret, supply 5V via 2.2K load resistor
Speaker Output power: RMS: 2.5W / 8 4.4W / 4
Loop drive compliance: Constant current, bounded by 4V RMS & 2A RMS
Total harmonic distortion: <5% (loop and speakers)
Dimensions (H x W x D): 116 x 115 x 40mm
Weight: 100g
Construction: ABS Plastic Construction Housing
Finish: Matt Black, Fine Texture
Information sheets other languages
Certificates
| Code | Quantity | Length | Width | Height | Cubage | Weight |
|---|---|---|---|---|---|---|
| PCS | 1 | - | - | - | - | - |
| INNER | 1 | - | - | - | - | - |
| MASTER | 1 | - | - | - | - | - |