Audio Frequency Induction Loop Systems
Induction loop amplifiers are used to provide audio coverage direct to
hearing aids fitted with a Telecoil (all NHS and a good range of private hearing
aids are equipped with the T position switch) .
The ITS easy T 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 15 years experience in the design and
production of loop equipment. The range covers all sizes of installation from
small counters in banks & Post Offices (using the ET30 and ETTC loop coil) to
the largest auditoria using multiple ET450's
How Does It Work?
An induction loop amplifier takes 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.
Where 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). See
Induction Loop
legislation guide
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.
ITS Induction Loop Amplifier Range
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| ET150, this amplifier has a host of
professional audio features and covers an area up to 200m2 |
ET300, this has the same specification
as the ET150, but covers an area up to 450m2 |
ET450, this has the same specification as the
ET150, but covers an area up to 800m2 |
|
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 |
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| ET30, Mostly used for counters with the ETTC coil,
or small meeting & interview rooms |
ETRX Induction loop test receiver |
ETFSM Induction loop Meter |
Also see our
pa systems
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