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noise thru speaker #47492
01/18/05 06:58 AM
01/18/05 06:58 AM
T
tomselectrc  Offline OP
Member
Joined: Mar 2004
Posts: 49
warren mi us
I have a customer that's having a problem with a pop coming thur his speakers every time he turns his cieling fan on.It also pop's when the refigerater water dispenser is working. Has anybody seen or heard of this? Is there a fix?

Work Gear for Electricians and the Trades
Re: noise thru speaker #47493
01/18/05 07:55 AM
01/18/05 07:55 AM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Hi Tom,
Sounds like an induced voltage problem.
Easiest way to fix it is to move the speaker wiring away from the mains wiring supplying the fan and the refrigerator.
This might be easier said than done, if it shares the same hole in the dwangs in the wall framing.
Hope this helps.

[Linked Image]
Mike.

Re: noise thru speaker #47494
01/18/05 09:03 AM
01/18/05 09:03 AM
T
tomselectrc  Offline OP
Member
Joined: Mar 2004
Posts: 49
warren mi us
thank's for the advice I'll check it out and let you know what I find.

Re: noise thru speaker #47495
01/18/05 12:46 PM
01/18/05 12:46 PM
P
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
I'd also check around for bad ground connections.

Re: noise thru speaker #47496
01/18/05 12:49 PM
01/18/05 12:49 PM
H
hbiss  Offline
Member
Joined: Dec 2003
Posts: 886
Hawthorne, NY USA
I would help to know a little about these speakers like where are they, how are they connected and to what.

-Hal

Re: noise thru speaker #47497
01/18/05 01:43 PM
01/18/05 01:43 PM
S
SolarPowered  Offline
Member
Joined: Jul 2004
Posts: 625
Palo Alto, CA, USA
Or it might not be the speaker wiring at all. For example, if his amplifier is on one circuit, and his preamp and CD player are on another circuit that happens to be the same as the ceiling fan and refrigerator, then it wouldn't take much of a spike on that second circuit to generate a difference in ground reference in the line-level signal going to the amplifier, thus resulting in a pop at the speakers.

Re: noise thru speaker #47498
01/18/05 10:43 PM
01/18/05 10:43 PM
J
Jps1006  Offline
Member
Joined: Jan 2004
Posts: 615
Northern IL
I've heard that "pop" too from ceiling fan controls. It's an arc in the control as it goes from one speed to the next. Cheap control. As to the fridge.... I don't know. I would guess it is the switch mechinism not supressing the arc enough. For the fan, I'd try a different control. For the fridge......again, I don't know.

Re: noise thru speaker #47499
01/19/05 08:47 AM
01/19/05 08:47 AM
T
tomselectrc  Offline OP
Member
Joined: Mar 2004
Posts: 49
warren mi us
I'll be going there friday so i'll keep you updated.Thanks for the Input.

Re: noise thru speaker #47500
01/19/05 10:14 AM
01/19/05 10:14 AM
M
marcspages  Offline
Member
Joined: Oct 2004
Posts: 48
London, UK
tomselectric,

if it is contact arc, this solution has stopped the disturbance of many TV sets, MW receivers, etc. from central heating thermostats - and could help your fridge etc.

M.

Re: noise thru speaker #47501
01/21/05 09:26 AM
01/21/05 09:26 AM
T
tomselectrc  Offline OP
Member
Joined: Mar 2004
Posts: 49
warren mi us
just got word from the tec, everything was good and tight including all the grounds. there were no speaker wires going thru any holes.No wires were bye any speaker wires. we took the speed controls off all the fans and tried switches but it still made the pop. it is only coming thru the sub woofer. any ideas? I told he to try another sub woofer thinking maybe it,s the speaker itself.

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