The Current Thinking range of audio frequency induction loop amplifiers (AFILS) represent the some of the latest advances in induction loop technology and have been designed by a team with over 20 years experience in the design and production of loop equipment.
The range covers all sizes of installation from portable units for customer service operators, small fixed units for counters in banks & Post Offices to the largest auditoria using multiple amplifiers and phase shift controllers.

Were Do I Need Induction Loop Amplifiers?

Facilities for the hard of hearing are required by both the building regulations document M and by the DDA (Disabled Discrimination Act) in places where the public need to hear information, or where customers are separated from staff by a glass partition (for further details see our guide to Induction Loops). An Induction loop amplifier will satisfy the requirements of both pieces of legislation with the minimum of fuss, and without the need to hire and maintain receivers.

How Does It Work?

An induction loop amplifier take audio from microphones and other audio sources, such as mixing desks and CD players and mixes them together. The amplifier then processes the audio using a compressor limiter to ensure that the sound has a fixed dynamic range (so quiet sounds are amplified and loud sounds are attenuated to prevent amplifier overloading). The processed sound is then passed to an output stage which converts the audio voltage to a current. This current then passes through a loop cable placed around the perimeter of the area to be covered. This current generates a magnetic field which is picked up by a coil in the hearing aid, and converted back to audio. Induction loops use no modulation, and are exempt from radio licensing, they also have the great advantage that the user maintains his or her own receiver.

At A Glance

Induction loop amplifiers are used to provide audio coverage direct to hearing aids fitted with a Telecoil, all NHS and most private hearing aids are equipped with the T position switch, including digital Hearing Aids.

The T position is provided for telephone use and all IEC118-1 compliant aids have the coil.