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<blockquote data-quote="Jeff Hague" data-source="post: 49078" data-attributes="member: 128">Re: Multi building 70volt system - is this normal?So, does the transformer isolate the systems so that the fact that each building has its own AC service doesn&#039;t present a grounding issue? Also, these feed a line input on the amps so I am assuming (oops) that the transformer also steps the signal down low enough not to distort that input? How do you determine how to wire the transformer for that?Yes, likely done to reduce cost and complexity when the installs were done. Their only real complaint is that the buildings really have to be daisy chained - they cant feed audio from building 1 to buildings 2 and 4 but skip 3 for instance. Because the buildings are different sizes, that is something that they would like to be able to do for some shows.The components themselves seem to be OK, I&#039;m sure Ill find some of the speakers to be blown or dry-rotted but from a quick walk around, it doesn&#039;t sound like many. They are willing to pay time and material for a complete wiring overhaul (including the speaker wiring if necessary) so thats where I&#039;m gonna start.What about where they have simply spliced 4 mic lines together into a single input though - (aside from having no level control between the mics) isn&#039;t that really bad news if they happen to actually plug more than 1 mic in at a time? Oh, Im sure it will be - thanks!</blockquote>

[QUOTE="Jeff Hague, post: 49078, member: 128"] Re: Multi building 70volt system - is this normal? So, does the transformer isolate the systems so that the fact that each building has its own AC service doesn't present a grounding issue? Also, these feed a line input on the amps so I am assuming (oops) that the transformer also steps the signal down low enough not to distort that input? How do you determine how to wire the transformer for that? Yes, likely done to reduce cost and complexity when the installs were done. Their only real complaint is that the buildings really have to be daisy chained - they cant feed audio from building 1 to buildings 2 and 4 but skip 3 for instance. Because the buildings are different sizes, that is something that they would like to be able to do for some shows. The components themselves seem to be OK, I'm sure Ill find some of the speakers to be blown or dry-rotted but from a quick walk around, it doesn't sound like many. They are willing to pay time and material for a complete wiring overhaul (including the speaker wiring if necessary) so thats where I'm gonna start. What about where they have simply spliced 4 mic lines together into a single input though - (aside from having no level control between the mics) isn't that really bad news if they happen to actually plug more than 1 mic in at a time? Oh, Im sure it will be - thanks! [/QUOTE]

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