Hi to all,
initially inspired by our resident ubergeek " Klem ", about a month ago, I persuaded my friend Rod Elliot of ESP to put together and publish a comprehensive discussion of the many complex issues with transformer coupled speaker loads as used in typical voice paging systems. Aka " Line Voltage PA " .
The result of our combined efforts may well be THE definitive article available on the net or elsewhere on the methods, design goals and many unseen hazards inherent in such systems.
The detailed discussion of the audio transformer saturation hazard ( and how to defeat it in practice) it is not something either Rod or myself have ever seen published elsewhere.
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Lotta words, read them all carefully.....
.... Phil