I’m pretty familiar with 70 volt paging Systems
Basically you would use a 70v for long distances multiple speakers on the same zone

Occasionally I run into a situation where they using 25V

I was just wondering why somebody would use a 25v

I thought it might have something to do with talkback speakers

Anyways I have a school that they want me to correct some of the paging issues that they have
it’s wired using speaker wire and telephone wire The building is pretty tough to Run Cable in
The speakers seem to be all set at 25v
They are using a 35 W amplifier In one building and 100 W amplifier for the other building

The building that is having the issue which varies daily
Has really low ceilings 6 foot high in the hallways I think there’s just one speaker in each hallway and One speaker in each classroom
the classrooms are a little higher ceilings than the hallways when people walk by it they can hear the white noise (Power) coming out of the speaker

This is all Bogen wall baffles I think that they are tap too high
And I don’t believe there’s any volume controls on them


Any thoughts would be greatly appreciated

Thanks

JD