An over-counter loop system, providing clear communication with hearing aid wearers, especially where background noise is a problem or clear speech is restricted. The aerial is contained within the sign, which fixes to a counter or desk surface, enabling users to easily spot the loop and get maximum benefit from it. The unit can be fitted in many positions due to its low-profile structure. Complies with the following standards: CE, ROHS and WEEE compliant; BS EN 60118-4 in correct installations.
Microprocessor controlled
Energy-saving “green” standby mode achieves a power saving of up to 80% during quiet periods
Advanced audio processing features, including 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
Magnetic field range of 800mm
Specification
Amplifier : dimensions 40 x 115 x 116mm
Amplifier : weight 0.1kg
Amplifier : construction ABS housing
Amplifier : supply voltage 12-14Vdc
Amplifier : quiescent current 100mA typical
Amplifier : operating current 2A typical at speech peaks
Amplifier : speaker output power RMS 2.5W @ 8Ohms - 4.4W @ 4Ohms
Amplifier : loop drive compliance constant curent, bounded by 4V RMS & 2A RMS
Amplifier : total harmonic distortion <5% (loop & speakers)
Microphone : dimensions 70 x 40 x 100mm
Microphone : frequency response 70Hz -20KHz
Microphone : polar pattern cardioid
Microphone : sensitivity -46dBv @ 1KHz
Microphone : distortion Typically less than 1%
Hearing loop sign : dimensions 205 x 205 x 5.4mm
Hearing loop sign : weight 0.2kg
Hearing loop sign : field range 800mm
