Contacta STS-A31 Amplifier

General Description

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