Buzzing Pulsating Sound is Back

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jpetersmm

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Howdy Ya'll,

I posted a while back about a buzzing pulsing noise I was getting from my amps and through my recording interface.....I purchased a Electro-harmonix hum de bugger and thought I was good but the sound is back. I have a recording of the sound. I really have no idea what to do.....I get the sound when I have a 1/4" cable plugged into an amp, I have a few different amps and have tried different amp/cable combos. Sometimes the sound will go away after a little bit when I first turn everything on and sometimes it will pop up out of no where. I thought it might have been my guitar but now I know that it is not.


I was getting it today from just having a 1/4" cable plugged into the amp (with nothing else on the business end). When I unplug the cable from the amp, the sound stops. I am picking up something, some type of frequency...what it is and how to stop it I have no idea and am quite baffled.

If anyone has any suggestions please let me know.....I would really appreciate it. Thanks

Jackson

View attachment MP3.mp3
 
I just bought a bigger monitor to plug into my laptop - and the power supply introduces an annoying buzzing through the usb interface when the monitor cable is plugged in, rendering it quite useless.
Do you have anything with an external power supply, like a black box halfway along the power cable? Non audio devices aren't designed to be quiet so they usually aren't.
You need to do some scientific testing of your setup - does the sound come only when something is on - does unplugging it fix the sound? Does plugging the cable into a guitar stop the sound?
 
I don't have external power....I have been getting the sound just from the amp plugged into the wall....when I have the 1/4" plugged into it, I got the sound....when I took the 1/4" out of the amp the sound went away.....I still got the sound when plugged into the guitar. I have messed around with it alot and for the life of me can't figure out what causes it....the only thing I can think is that I am somehow picking up some frequency or some sort.....I am really at a loss here

I figured that if it is a short then the sound would happen all the time......if it was something the guitar was picking up then it would only happen when the guitar is plugged.....or it was a power conditioning problem then I would be picking it up without having something plugged into it. But none of that is the case.
 
Move the amp into a different room - or better yet a different place entirely - a friend's house, for example. If you still get the sound, then the amp is at fault. If the sound goes away, then you need to isolate what is causing it. As you say it happens when you plug a cable into the amp, I suspect something in the amp's input circuitry.
 
Does the sound go away when your playing the guitar? I have this issue also, when the guitar is sitting in my lap I have a low buzz, when I place my hand on the strings it goes away. Im guessing its a ground issue for me , but thought I would just ask.
 
I know it doesn't help you at all but I'm saving your "problem" for the next time I need a cliche Frankenstein lab effect! Or maybe a space tractor beam or....
 
It sounds like electromagnetic interference to me. What's in the vicinity that has a motor in it?
 
Sorry I didn't get back to you, I have been off for a couple days.....

To MJBPhotos: I have tried different rooms but have still run into the same problem....I have never encountered the issue at any one else place or gig....I have a few different amps and the sound will be picked up by all of them when I hear it....I have tested different amps with different cables.....

To Dreib: The sound doesn't go away when I play the guitar...sometimes the guitar exaggerates the sound when I switch between pickups....

To RRuskin: It really does seem like an electromagnetic interference to me as well.....I am not really sure about the motor....nothing that I know of.....possibly something in the neighbors house.....also I just thought of this and it may help.....all my amps are solid state.....my roommate has never encountered the sound and he uses a tube amp?
 
jpetersmm said:
Sorry I didn't get back to you, I have been off for a couple days.....

To MJBPhotos: I have tried different rooms but have still run into the same problem....I have never encountered the issue at any one else place or gig....I have a few different amps and the sound will be picked up by all of them when I hear it....I have tested different amps with different cables.....

To Dreib: The sound doesn't go away when I play the guitar...sometimes the guitar exaggerates the sound when I switch between pickups....

To RRuskin: It really does seem like an electromagnetic interference to me as well.....I am not really sure about the motor....nothing that I know of.....possibly something in the neighbors house.....also I just thought of this and it may help.....all my amps are solid state.....my roommate has never encountered the sound and he uses a tube amp?
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Does the sound change when you reorient the either the amp or cable?
 
I'd be looking at a problem with your AC. Have you tried a filter between the wall and your amp(s)?
 
I haven't but I was considering it....I don't get anything from the amps when they are turned on but no cable is inserted......I also got the same sound, just a couple times when I had my guitar plugged directly into my interface.....would an AC problem happen consistently or sporadically?
 
Any electric/electronic problem can be intermittent. The fact that you have gotten the sound with another device points even more to a problem coming from your environment, whether the AC itself or something else contaminating it, the equipment, or both. You might try shutting off anything with a motor in it - furnace, air conditioner, refrigerator; etc., to see if all goes away when any or all are off.
 
I will give it a try and see what happens....thanks for the tip RRuskin!
 
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