Counter Loop Driver

Power supply (PS-55-01) sold separately.

Our innovative 1 to 1 Hearing Loop Driver is a special type of audio amplifier designed especially for driving hearing loops.

Applications

For use in any situation where one to one communication takes place at a counter, booth or desk, such as in: 

• Banks
• Post offices
• Supermarkets
• Theatres
• Information centres
• Airports

Standards

• Induction loop performance compliant with BS EN60118-4 (when correctly installed)

Features

• Microprocessor control
• Energy-saving “green” standby mode is achieving a power saving of up to 80% during quiet periods
• Advanced audio processing feature AGC, compression, and noise gate
• Constant-current loop drive
• Continuous self-testing
• Isolated audio line input allows the driver to take alternative audio sources (optional)
• Power and LED status indication

Specifications

• Dimensions:
  Height - 116mm (4.57”)
  Width - 116.2mm (4.58”)
  Depth - 40mm (1.57”) 
• Weight: 120g (0.26lbs)
• Construction: ABS Plastic Construction Housing
• Finish: Matt Black Fine Texture

• Input 1 (Microphone):
  Screw terminals on 3.8mm 2 pole Phoenix connector
  Single-ended electret microphone, powered by 5V via 2.2K ohms
• Input 2 (Line) (Optional, HLD2-01 only):
  Screw terminals on 3.8mm 2 pole Phoenix connector
  Transformer isolated, 0dBu into 1K Ω, may have series resistance added for optional 75V or 100V line inputs
• Power: Centre positive power jack, 14V DC 2.14A via 2.1mm from our power supply unit (PS-55)

• Loop connection: Screw terminals on 3.8mm 2 pole Phoenix connector
• Loop drive current: 2Arms compliance current @ 1kHz sine wave
• Loop drive voltage: 4Vrms compliance voltage @ 1kHz sine wave

• Frequency response: 100Hz – 5kHz (±3dB)
• Distortion: Better than -40dB, inputs at nominal level

• Processor controlled:
  Dynamic range: 40dB typical
• Attack time: 10 milliseconds
• Release time: typically 10 seconds, varies with program content

• Status LEDs:
• 3 colour LEDs indicate power, input and output diagnostic information
• Connection provided for our LED halo indicator microphone

• Microprocessor controlled: Unit, including microphone and loop connections is continuously monitored, and internal and external LED indicators are updated

• Sound activated: Unit will enter low energy “sleep” mode when acoustic conditions indicate lack of usage