ticking noise

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ticking noise #482049 03/10/10 06:09 AM
Joined: Mar 2010 Posts: 2 Alberta, Canada pland Member
pland Member Joined: Mar 2010 Posts: 2 Alberta, Canada	all the horns on our paging are producing "ticking" or "clicking" noise every 3. second. As soon as I power off the ampliefier, the noise stops, obviously. The paging gets recorded by DFT120 from Bogen. I have tried it to power off DFT120 with no results. Any idea what could it cause the noise? Paul

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Re: ticking noise #482050 03/10/10 07:51 AM
Joined: Mar 2001 Posts: 3,268 Mission, TX S. Beloit, IL JWRacedog Member
JWRacedog Member Joined: Mar 2001 Posts: 3,268 Mission, TX S. Beloit, IL	Is there any possibility that a security system or the like be cross connected to a speaker cable?? When did this start?? Was there some work done somewhere to cause this? Rockford VoIP

Re: ticking noise #482051 03/10/10 08:06 AM
Joined: Oct 2001 Posts: 4,043 US MrGemini Member
MrGemini Member Joined: Oct 2001 Posts: 4,043 US	Sounds like it may be picking up a polling loop from a digital fire alarm. Disconnect the input to the amp to see if it's being induced from the source. --------------------------------- MrG

Re: ticking noise #482052 03/10/10 08:36 AM
Joined: Feb 2005 Posts: 12,349 Likes: 4 New York hbiss Member
hbiss Member Joined: Feb 2005 Posts: 12,349 Likes: 4 New York	How long is the wire to the input to the amp, what kind is it and where is it run? What amplifier are you using? Give us and idea what this looks like from the paging source (phone system?) to speakers. -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: ticking noise #482053 03/11/10 02:03 AM
Joined: Apr 2001 Posts: 1,390 AZ rustynails Member
rustynails Member Joined: Apr 2001 Posts: 1,390 AZ	Has this always occurred from day 1, or has paging been in place and just started with the clicking?

Re: ticking noise #482054 03/15/10 06:19 AM
Joined: Mar 2010 Posts: 2 Alberta, Canada pland Member
pland Member Joined: Mar 2010 Posts: 2 Alberta, Canada	Thanks very much for all comments. Actually, it stopped. I am still don't know what it cause. Yes, I did disconnect the source, the noise was still there. May be our TOA amp is slowly dying.

Re: ticking noise #482055 03/15/10 01:04 PM
Joined: Feb 2005 Posts: 12,349 Likes: 4 New York hbiss Member
hbiss Member Joined: Feb 2005 Posts: 12,349 Likes: 4 New York	Sure it wasn't your cell phone? -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: ticking noise #482056 03/15/10 10:28 PM
Joined: Oct 2009 Posts: 410 Hills of PA Jim Bennett Member
Jim Bennett Member Joined: Oct 2009 Posts: 410 Hills of PA	pland, Hal was not joking - cell phones, cordless phones, PDA's, and all manner of other little wireless gadgets can emit little "blips" of handshaking/location/ID info, even when just sitting idle (especially when just sitting idle). These little bursts of RF can find their way into the audio of even the best equipment when they are strong enough. And of course, these things are tiny and hiding in people's pockets, so they come and go... Jim ************************************************** Hiding from RF noise in a secure undisclosed location.