Induction Loop Systems

Cost-effective induction loop systems suitable for many applications

Induction Loop Systems

Cost-effective induction loop systems suitable for many applications

Key Features

  • Designed to meet and exceed the requirements of BS7594 and BS-EN60118-4 when correctly installed
  • Available in a variety of cost-effective kit formats suitable for use in ticket offces, meeting rooms, lecture theatres, nursing homes, GP surgeries, churches and shops
  • Allows hearing aid users to participate fully in general conversation and other social or work related activities
  • Can be used to help building managers and service providers comply with BS8300 and the Equality/Disability Discrimination Act
  • All amplifiers are compatible with Outreach plate audio input extension system, a range of wall, ceiling and desk mountable single gang audio input plates specifically designed to increase the audio input capability of an induction loop system (and many other systems besides)
  • A comprehensive range of amplifiers, microphones, connector plates and test equipment covering virtually every conceivable AFILS application are available
  • Induction loop test kits include everything required to test an AFILS system to current British standards
Cat No Description Contents
FPA-287 Portable induction loop kit (supplied in a cardboard carry case)
 
Amplifier c/w battery and integral microphone, plugtop charger and sticker
 
FPA-289 Portable induction loop kit (supplied in a plastic carry case)
 
Amplifier c/w battery and integral microphone, plugtop charger and sticker
 
FPA-291 Counter induction loop kit Free-standing amplifier, AC power lead, counter loop and fixings, AMT microphone, 5ft lead and accessory pack
FPA-899 Counter induction loop kit
 
Double-gang amplifier, AMT microphone and counter loop
 

Cat No

Description

Contents

FPA-287
Portable induction loop kit (supplied in a cardboard carry case)
 
Amplifier c/w battery and integral microphone, plugtop charger and sticker
 

Cat No

Description

Contents

FPA-289
Portable induction loop kit (supplied in a plastic carry case)
 
Amplifier c/w battery and integral microphone, plugtop charger and sticker
 

Cat No

Description

Contents

FPA-291
Counter induction loop kit
Free-standing amplifier, AC power lead, counter loop and fixings, AMT microphone, 5ft lead and accessory pack

Cat No

Description

Contents

FPA-899
Counter induction loop kit
 
Double-gang amplifier, AMT microphone and counter loop
 
Cat No Description Contents
FPA-907 200m² meeting/seminar room loop kit
 
Amplifier and APM omni-directional microphone plate
 
FPA-908 200m² lecture room loop kit
 
Amplifier, AMT tie/desk microphone, AML lectern microphone and 2 x APJ plates/cable
 
FPA-909 200m² TV/music lounge loop kit
 
Amplifier, AMH handheld microphone, APS scart lead, APJ plate/cable and APL plate
 
FPA-910 200m² waiting room loop kit
 
Amplifier and APL plate/cable
 
FPA-912 200m² place of worship loop kit 1
 
Amplifier, AML lectern microphone, APJ plate/cable and APL plate/cable
 
FPA-915 200m² health and fitness club loop kit lavelier microphone version
 
Amplifier, lavalier radio microphone, APQM plate/cable and APL plate
 

Cat No

Description

Contents

FPA-907
200m² meeting/seminar room loop kit
 
Amplifier and APM omni-directional microphone plate
 

Cat No

Description

Contents

FPA-908
200m² lecture room loop kit
 
Amplifier, AMT tie/desk microphone, AML lectern microphone and 2 x APJ plates/cable
 

Cat No

Description

Contents

FPA-909
200m² TV/music lounge loop kit
 
Amplifier, AMH handheld microphone, APS scart lead, APJ plate/cable and APL plate
 

Cat No

Description

Contents

FPA-910
200m² waiting room loop kit
 
Amplifier and APL plate/cable
 

Cat No

Description

Contents

FPA-912
200m² place of worship loop kit 1
 
Amplifier, AML lectern microphone, APJ plate/cable and APL plate/cable
 

Cat No

Description

Contents

FPA-915
200m² health and fitness club loop kit lavelier microphone version
 
Amplifier, lavalier radio microphone, APQM plate/cable and APL plate
 
Cat No Description
FPA-917 200m² free-standing induction loop amplifier
FPA-918 500m² free-standing induction loop amplifier
FPA-919 1000m² free-standing induction loop amplifier

Cat No

Description

FPA-917
200m² free-standing induction loop amplifier

Cat No

Description

FPA-918
500m² free-standing induction loop amplifier

Cat No

Description

FPA-919
1000m² free-standing induction loop amplifier
Cat No Description
FPA-834 Tie/desk microphone to suit FPA-287, FPA-289, FPA-291, FPA-899, FPA-906 and FPA-922
FPA-838 Lectern microphone to suit FPA-287, FPA-289, FPA-291, FPA-899, FPA-906 and FPA-922
FPA-857 Desktop microphone to suit FPA-287, FPA-289, FPA-291, FPA-899, FPA-906 and FPA-922
FPA-858 Lavalier radio microphone kit with 4 selectable frequencies (includes receiver, transmitter and power supply unit)
FPA-928 Omni-directional plated microphone for wall, ceiling or desk mounting

Cat No

Description

FPA-834
Tie/desk microphone to suit FPA-287, FPA-289, FPA-291, FPA-899, FPA-906 and FPA-922

Cat No

Description

FPA-838
Lectern microphone to suit FPA-287, FPA-289, FPA-291, FPA-899, FPA-906 and FPA-922

Cat No

Description

FPA-857
Desktop microphone to suit FPA-287, FPA-289, FPA-291, FPA-899, FPA-906 and FPA-922

Cat No

Description

FPA-858
Lavalier radio microphone kit with 4 selectable frequencies (includes receiver, transmitter and power supply unit)

Cat No

Description

FPA-928
Omni-directional plated microphone for wall, ceiling or desk mounting
Cat No Description
FPA-859 FosMeter-Pro induction loop test kit including AFILS tester, signal generator and headphones (requires FPA-936 lead)
FPA-936 3.5mm jack to bare-ended lead
FPA-937 100m x 0.5mm² single core white loop cable
FPA-993 100m x 1mm² single core white loop cable
FPA-1006 100m x 1.5mm² single core white loop cable
FPA-1040 100m x 2.5mm² single core white loop cable
FPA-1072 100m x 1mm² insulated copper tape for use under carpets
FPA-1080 100m x 1.5mm² insulated copper tape for use under carpets
FPA-1081 50m printed hearing loop tape
FPA-1082 10m Belden 8723 4 core screened cable
FPA-1083 25m Belden 8723 4 core screened cable
FPA-1084 Loop connector plate
FPA-1085 100V line to 0dB convertor
FPA-1086 Overspill reduction phase shifter
FPA-1087 Pack of 10 self-adhesive "Induction Loop Fitted" labels

Cat No

Description

FPA-859
FosMeter-Pro induction loop test kit including AFILS tester, signal generator and headphones (requires FPA-936 lead)

Cat No

Description

FPA-936
3.5mm jack to bare-ended lead

Cat No

Description

FPA-937
100m x 0.5mm² single core white loop cable

Cat No

Description

FPA-993
100m x 1mm² single core white loop cable

Cat No

Description

FPA-1006
100m x 1.5mm² single core white loop cable

Cat No

Description

FPA-1040
100m x 2.5mm² single core white loop cable

Cat No

Description

FPA-1072
100m x 1mm² insulated copper tape for use under carpets

Cat No

Description

FPA-1080
100m x 1.5mm² insulated copper tape for use under carpets

Cat No

Description

FPA-1081
50m printed hearing loop tape

Cat No

Description

FPA-1082
10m Belden 8723 4 core screened cable

Cat No

Description

FPA-1083
25m Belden 8723 4 core screened cable

Cat No

Description

FPA-1084
Loop connector plate

Cat No

Description

FPA-1085
100V line to 0dB convertor

Cat No

Description

FPA-1086
Overspill reduction phase shifter

Cat No

Description

FPA-1087
Pack of 10 self-adhesive "Induction Loop Fitted" labels

Specification / Technical Information

What is an Audio-Frequency Induction Loop System?
Audio-frequency induction loop systems allow hearing impaired people to hear more clearly. Most hearing aids have a ‘T’ or ‘MT’ switch which allows them to pick up the electromagnetic field generated by an induction loop system. The hearing aid converts this signal into a sound suited to its user’s specific hearing requirements. Any person with a hearing aid positioned within or near the loop can hear the loop signal by switching their hearing aid to the correct position, allowing them to participate more effectively in general conversation, ordering goods or services, listening to public performances, etc.

An induction loop system therefore comprises the following main elements:
  • The audio source - typically a microphone, television or other audio input (sometimes more than one).
  • The induction loop amplifier
  • The loop - typically 1 or 2 turns of wire usually run around the perimeter of the room or a special counter loop fixed to the underside of a table/desk.
  • The receiver(s) - any hearing aid with a ‘T’ or ‘MT’ switch or a specially designed loop listening device.

How Does an Audio-Frequency Induction Loop System Work?
Audio-frequency induction loop systems do not use radio frequencies; they operate at audio frequencies. The signal from an audio source is fed into an induction loop amplifier, which amplifies and sets the signal level in the same way as a conventional amplifier. The amplified signal, instead of going to a loudspeaker, is fed to a closed loop of cable that is normally placed around the perimeter of the room (although other, more sophisticated ‘loop patterns’ can be employed). Using a constant current amplifier ensures the current is maintained at the set level whilst providing a flat frequency response without the need for equalisation circuitry. The current flowing through the loop generates a magnetic field that radiates in the space around the loop cable. Any lines of magnetic flux that pass through the telecoil in a receiver, such as a hearing aid, will generate a current in the coil that is then converted back to audio and fed into the listener’s ear.

It is important to remember that the magnetic field will ‘bleed’ outside the perimeter of the loop and therefore a loop system cannot be considered confidential. Induction loop systems are popular because:
  • Unwanted sounds such as other conversations and background noise are not picked up.
  • No special receivers are required - telecoils are fitted as standard in most hearing aids or are an inexpensive option.
  • Magnetic induction tends to be more reliable and effective than other systems (infrared, for example, is line of sight only).
  • Modern hearing aids amplify different bands by different amounts to suit a user’s specific hearing requirements.

In the UK, the installation of induction loop systems is governed by BS7594 (The Code of Practice for Audio-Frequency Loop Systems) and EN60118-4 (Magnetic field strength in audio frequency induction loop systems for hearing aid purposes). This system is designed to meet or exceed these requirements.

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