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#481199 10/16/08 04:56 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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#481200 10/16/08 05:23 AM
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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
#481201 10/16/08 05:27 AM
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have you tried paging directly from the amp ?


Skip
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Serving SW and West central Fl since 1984
#481202 10/16/08 06:18 AM
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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.
#481203 10/16/08 07:01 AM
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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

Business Telephones & Equipment + Commercial Audio/Video Products
Commercial Communications . . . Turner, Maine
If it was built after 1980 don't expect it to work right.
#481204 10/16/08 07:41 AM
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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.

#481205 10/16/08 07:57 AM
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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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#481206 10/16/08 08:36 AM
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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.
#481207 10/17/08 04:26 AM
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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
Customer Support Engineer

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