A Contractor’s Guide To Induction Loop Systems (AFILS) PDF fileThe induction loop systems this document refers to are more properly termed AFILS, which stands neutral wiring takes separate routes, resulting in a loop. However, most hearing aids are designed to reject such low frequencies, and so this is not normally a practical problem. A Guide to Audio-Frequency Induction Loop Systems PDF fileA GUIDE TO AUDIO-FREQUENCY INDUCTION LOOP SYSTEMS • PAGE 4 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. Design Guide - Induction Loop Systems - Williams Sound PDF fileInduction Loop Design Guide Site Survey A site survey is performed in an existing structure, prior to installing the loop system. Site surveys should take many things into consideration. Reminder: Any equipment that will likely be operating when the loop system is on, should be operating during the testing. Induction Loop Wiring Diagram - Wiring Diagram Resource Free Induction loop wiring diagram . Welcome to our website, we try to bring you relevant images to what you are looking for about "Induction Loop Wiring Diagram"efore we present the picture gallery below.