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25 volt system
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<blockquote data-quote="John Roberts" data-source="post: 57987" data-attributes="member: 126"><p>Re: 25 volt system</p><p></p><p></p><p> A 25V system is pretty much the same as 70V system, just a lower turns ratio on the output transformer. The power available is whatever the amp delivers. A speaker with 70V transformer taps will make proportionately lower power, but fully loaded the amp will make and deliver full power. </p><p></p><p>Because of the lower voltage there will be higher current and more wire losses, for similar power delivered.</p><p></p><p>The lower voltage systems are often used in schools for increased safety. Perhaps check for code issues specific to schools if that's where you are working. The insulation rating for 70V "should" be more than adequate at 25V. </p><p></p><p>(in other words I do not really know). </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 57987, member: 126"] Re: 25 volt system A 25V system is pretty much the same as 70V system, just a lower turns ratio on the output transformer. The power available is whatever the amp delivers. A speaker with 70V transformer taps will make proportionately lower power, but fully loaded the amp will make and deliver full power. Because of the lower voltage there will be higher current and more wire losses, for similar power delivered. The lower voltage systems are often used in schools for increased safety. Perhaps check for code issues specific to schools if that's where you are working. The insulation rating for 70V "should" be more than adequate at 25V. (in other words I do not really know). JR [/QUOTE]
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