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[David Haulman]

This customer got a building with some ceiling mounted speakers in it. They appear to be 70 volt. Can I take a small amp with 70 volt output; hook up the speakers and put a tone thru the amp just to see if they all work? no gonna drive it hard. just wanna check them.Any thoughts?

[John Roberts {JR}]

Yes.. they may not get very loud but you can confirm they do not have rubs or open VC,

JR

[Ivan Beaver]

This customer got a building with some ceiling mounted speakers in it. They appear to be 70 volt. Can I take a small amp with 70 volt output; hook up the speakers and put a tone thru the amp just to see if they all work? no gonna drive it hard. just wanna check them.Any thoughts?

You could use a normal amp to do that test.  The level may be lower than what you would normally expect from the amp-due to the higher impedance.

So by your statement-I assume there is no amp in place.

To me the FIRST thing I would do would be to do an impedance SWEEP-NOT a DC resistance reading.

This way you can get an idea of what the total load presented to the amplifier would be-assuming the speakers are all properly tapped.

That is the only way you have to get an idea of what size amp you should use.

[David Haulman]

You could use a normal amp to do that test.  The level may be lower than what you would normally expect from the amp-due to the higher impedance.

So by your statement-I assume there is no amp in place.

To me the FIRST thing I would do would be to do an impedance SWEEP-NOT a DC resistance reading.

This way you can get an idea of what the total load presented to the amplifier would be-assuming the speakers are all properly tapped.

That is the only way you have to get an idea of what size amp you should use.

Yeah. I see. No amp at location. I checked a few of them when I had the lift. I think it will work. Thanks for your Help!

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