Engine whine come though intercom in helmet


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Sally
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Engine whine come though intercom in helmet

Postby Sally » Sat Mar 17, 2012 6:46 pm



I have a Zumo 550 also use it for and MP3 player.I am getting engine whine so bad I can't listen to it any ideals ? I have purchased a inline noise supressor. Didn't help. I have rewired it directly to battery now also didn't help. Sally :cry:



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seabee_
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Re: Engine whine come though intercom in helmet

Postby seabee_ » Sat Mar 17, 2012 11:48 pm

You might have a bad, loose or corroded ground somewhere on the bike. You could have a problem with a spark plug. What plugs are you running? I googled this problem and found a site you might check. Other riders had the same issue with the Zumo.
http://gl1800riders..com/forums/showthr ... -aux-input
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Sally
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Re: Engine whine come though intercom in helmet

Postby Sally » Sun Mar 18, 2012 7:27 am

using NGK plugs. can't seem to link to the web site you gave..Thanks Sally

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Re: Engine whine come though intercom in helmet

Postby Mike 545 » Sun Mar 18, 2012 7:49 am

I couldn't link to the site, either.

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Re: Engine whine come though intercom in helmet

Postby seabee_ » Sun Mar 18, 2012 5:33 pm

Sorry but don't know what happened to the link. Hopefully this one will work. Since you're using the NGK's that shouldn't be the issue. I think it may lie in the grounds somewhere.

http://gl1800riders.com/forums/showthre ... -550-noise
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Sally
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Re: Engine whine come though intercom in helmet

Postby Sally » Sun Mar 18, 2012 6:27 pm

I have to been researching this I believe it maybe a ground loop problem to but it's not on the power line feeding the zumo.I beleive it is coming in on the 3.5mm aux.cord on the bike where seems to be a problem with this.Found this great link to take care of problem,, Sally
http://www.sierra-mc.com/proddetail.asp ... GL18GRNDLP

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Re: Engine whine come though intercom in helmet

Postby WingAdmin » Mon Mar 19, 2012 12:01 pm

Most likely it is a ground loop. Basically, there is a voltage differential on the ground between the sound source and the AUX input (or more accurately, the power supply supplying the Zumo). You'll be able to test this easily: Connect it up and play music with the engine running, so that you hear the whine. Then, while it's playing, disconnect the power supply from the Zumo, so that it is playing off its battery. If the whine disappears, then the problem is a ground loop.

In that case, any commercial ground loop isolator will fix your problem. It's basically a transformer that electrically disconnects the ground and signal wires in the 3.5mm cable, but passes the signal through.

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Sally
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Re: Engine whine come though intercom in helmet

Postby Sally » Mon Mar 19, 2012 6:03 pm

Thanks wing admin.I will try this I beleive your 100% right. I found lots of information on this.I have installed a noise suppressor on the battery power line in didn't seem to help much.Then I found out I have the wrong line I should be on the 3.5 mm aux. line.. Thanks everyone... Sally :lol: :lol:

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Re: Engine whine come though intercom in helmet

Postby Sally » Thu Mar 22, 2012 6:19 pm

OK I'm a knot head. that being said. I went out on the net and purchased a ground loop for the aux. in put today that was my last straw to help with this whine problem then when I got home and let the bike cool off.I figured maybe I should recheck the plugs because everyone keeps saying wrong plugs.Guess what.I didn't have NGK . I have E3's I guess there are not a resistance type plug. So I went down and purchased the right plugs and it cured about 95 % of the whine. Should be 100% when I install the ground loop.. Thanks Sally :lol: :roll: :shock:

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Re: Engine whine come though intercom in helmet

Postby seabee_ » Thu Mar 22, 2012 6:36 pm

Wouldn't you figure, sometimes it's the simplest thing..... :roll: I've been there and done that, too. You beat your head against the wall, walk away from it for awhile, then it comes to you (the problem, that is). So glad you were able to find the culprit,(or gremlin) causing this headache. Now you can enjoy the tuneage.... :P
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Re: Engine whine come though intercom in helmet

Postby WingAdmin » Thu Mar 22, 2012 8:52 pm

I should have mentioned - if it's ground loop noise, you can try disconnecting your alternator (or stator) while the engine is running. If the noise goes away, it's very likely a ground loop causing your noise. If not, it's very likely that it's plugs/plug wires.

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Sally
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Re: Engine whine come though intercom in helmet

Postby Sally » Tue Mar 27, 2012 2:25 pm

I received by ground loop isolator for the aux. input 3.5mm I installed it this morning.100% clear PERFECT I'm talking.Best 35 bucks I've spend lately. :lol: :lol: Sally

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Re: Engine whine come though intercom in helmet

Postby WingAdmin » Tue Mar 27, 2012 2:42 pm

Glad to hear it! :) I figured that would fix it.

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Re: Engine whine come though intercom in helmet

Postby sbenj » Thu Jun 14, 2012 11:51 am

just glancing at posts and noticed this one. I also have the Zumo and had engine whine. What I discovered, was it was the actual connector from the aux cable to the zumo (the one on the side). I have a 90 degree connector elbow, and when I pushed on that the actual whine stopped. Can't say that is your issue, but is did it for me

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Re: Engine whine come though intercom in helmet

Postby WingAdmin » Thu Jun 14, 2012 12:54 pm

sbenj wrote:just glancing at posts and noticed this one. I also have the Zumo and had engine whine. What I discovered, was it was the actual connector from the aux cable to the zumo (the one on the side). I have a 90 degree connector elbow, and when I pushed on that the actual whine stopped. Can't say that is your issue, but is did it for me


That would indicate that the connector is not making a ground connection (the lowest ring on the connector, nearest the base of the plug). With no ground, it is forced to use the ground path through the power/bike/frame for the audio, which is full of noise (i.e. alternator whine). When you press on it, it's making contact with the ground, and provides a good, clean ground path for the audio. I would likely fault the jack on the Zumo for this one. Sometimes the surface-mount jacks they use on these devices break free of the circuit board if the plug that is plugged into them is subjected to a good whack or jerk. Pressing the plug pushes the broken contact (usually the ground, as it is closest to the edge) back against the board.




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