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Paging noise #481199 10/16/08 08:56 AM
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gtmc14 Offline OP
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I installed an ESI CS100 phone system and connected it to the existing paging amp and now there is noise on the speakers. We did install the system in a different location in the same building. There is now approximatly 200 ft of cable connecting the paging amp and phone system.

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Re: Paging noise #481200 10/16/08 09:23 AM
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justbill Online Content
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What kind of noise? Inductive power? If you remove the phone system does the noise go away? Have you tried moving the amp to where you installed the phone system? Or is that even possible?


Retired phone dude
Re: Paging noise #481201 10/16/08 09:27 AM
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skip555 Offline
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have you tried paging directly from the amp ?


Skip
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Re: Paging noise #481202 10/16/08 10:18 AM
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hbiss Online Content
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Well, I'm assuming that you are saying it worked before with an old system. Now you installed a new system at a different location that requires 200' of cable to the amp.

What kind of cable? What is the amp? Most importantly what kind of noise? Is it a hum or something else?

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
Re: Paging noise #481203 10/16/08 11:01 AM
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metelcom Online Happy
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Most systems are a Hi impedance page output. If your are going to have the amp that far away you will need to have a balanced line with shielded cable. Bill had the right idea relocate to amp to where the new system is located and redo the output wires. If this is a 25/70 volt speaker system then you can tap the amp output any where in the speaker line.


Merritt

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If it was built in the last 10 years don't expect it to work right.
Re: Paging noise #481204 10/16/08 11:41 AM
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gtmc14 Offline OP
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Moving the amp was my first idea also. The speakers are daisy chained so that should solve the problem just tapping into a speaker that is near.

Re: Paging noise #481205 10/16/08 11:57 AM
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Silversam Offline
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Inputs to a paging system should ALWAYS be done with Shielded wire. Did you use shielded cable or just some leftover Cat 3/5 wire?

Sam


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Re: Paging noise #481206 10/16/08 12:36 PM
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hbiss Online Content
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The speakers are daisy chained so that should solve the problem, just tapping into a speaker that is near.

There you go. aok

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
Re: Paging noise #481207 10/17/08 08:26 AM
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RobCalltrol Offline
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I don't know about the CS100 systems, but I solved it on my X-class. I have a self-amplified horn. If you just connect it to the paging terminals on the first port card's block, then the horn will keep amplifying the static line noise. There should be a set of dry contact terminals that go a long with the paging terminals. I used the dry contact with a relay to trigger the 24 volt power to the horn when the needed. No power, no amplified line noise.


Rob Cashman
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