Hearing Aid Induction Loops

Hi, many years ago I put an induction loop in our church. The floor area is about 600 sq/M. I used 100 metres of twin cable and an old audio amplifier. After about 5 years of successful usage we purchased a loop amplifier. There was no noticeable difference, however it was more professional. It makes the church amplification really good for people who have a "T" switch on their hearing aid (you must have a "T" switch). It cuts out background noise and bounce from building speakers. In effect, I can thus hear better than most people. Also I cannot hear any disturbance from children behind me. In a theatre, the volume from the speakers are so loud that all the sound is blended into a loud hash. The loop gives me clarity. I find it useless to watch a movie at the theatre without a loop. I also use one at home for the TV.