Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Jazzfiend101

New member
Hello all, this is a simple question with some complex issues and I've found next to nothing online for how to solve this problem. These are issues I've had onstage, at home, and on and off with a few guitars that I own. I have three different Epi Les Pauls, a white Custom with a Pearly Gates bridge and APH-1 neck, a sunburst Standard with a set of 59s, and a tobacco standard with the Hot Rodded Humbucker set containing the JB and Jazz Neck.

I've been using a JCM 2000 DSL 50 on the green channel hitting it with an Ibanez Jet Driver to get a heavy 80s pissed off metal/glam rock/meets Rocks era Aerosmith/rocknfnroll/GNR/etc sound... or at least I try. The issues were apparent on that amp. I recently just got a sweet new Orange Dark Terror. Amazing amp. But, the problem actually got worse. Here's how I can best describe the issue. I get a low end feedback that sounds literally like someone using a tuba without a mouthpiece. A low, wwwwwwwwwooooooooooooo sound. It's actually pretty bad, very loud, and very obnoxious. Interestingly enough, the pickup vibrates in its cavity. It's ALIVE! I have noticed that when I touch the pickup to make it "sit still" it goes away. Perfect... now how do I play it like that? It'd be a cool innovation... Guy plays guitar without fingers...

It doesn't do this as much with the Pearly Gates, which is a shame because I really don't like that pickup. By far the thinnest sounding bridge pickup known to man. Zero meat. Glass attacks ears. When I used the Marshall I found the Deep Switch to be the only thing to cure the accursed Pearly Gates pickup. I am a hater. Anywhoo, it doesn't do this that often with that pickup, even when cranked. The Custom is a pretty heavy guitar, and the PG is a lower output pickup (with more treble than a pair of tweeters that have zero bass frequencies) so I can't quite figure out why the pickup wouldn't vibrate. Obviously it has nothing to do with the tonal characteristics of the pickup.

The JB and the 59 are both the problem childrens. Which is a shame because these are clearly the greatest pickups one could ever put into a Les Paul. Duh. The problem is very bad with the JB and the 59. I have lowered the pickup, thinking the issue to be with the magnetic pull perhaps vibrating the piece too much against the magnet's resistance to the string. I figured, I'll lower it out of harms way. Doesn't work. Actually makes it worse. I've raised it all the way up to the strings thinking, if I cut off the string pull then what could possibly jerk the pickup around? Doesn't work. Actually makes it worse. So, my guess is this is related to the amount of output + gobs of distortion x type of magnets (as we all know the JB and 59 are A5 and the PG is A2)/ the square root of using .11-.48's ernie balls + metal - country music x all three are heavy guitars that I don't believe are chambered + all uncovered pickups = messy mess of wwwwwwwwwwwwwooooooo. Or maybe me pickups are just trying to ESCAPE!! They want to be free of my abuse!

Also, the Jazz neck in my tobacco standard also suffers the same fate of the wwwwwwwwwoooooooooooooo.

Here's the solutions I've tried: placing toothpicks inside of the spaces between the pickup and the actually cavity walls to stunt movement. Doesn't really work, and it makes my guitars look ghetto. There is nothing cool about looking ghetto at all ever. Very anti-ghetto equipment, here. Here's what I haven't tried, duct taping the pickups to the sides of the pickup covers in an attempt to arrest the pickup's motion (which is ghetto), using foam covers under neath the pickup (not ghetto, as it can't be seen), burning the guitars and moving onto Strats.

Before I get any responses, the one bit of feedback (seriously? a pun?) I won't listen to is the ever famous, "Why dontcha turn your darned distortion down, you whippersnapper, and play some Cream?" AIN'T NOBODY GOT TIME FOR THAT. This is metal we speak of. (no offence to Clapton... actually would like to try the Whole Lotta Humbucker).
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Also, I'm ruling out the possibility that these pickups are not potted. I had a tech tell me they were possibly not potted properly, and I simply refuse to believe I bought three sets of Seymour Duncan pickups from Guitar Center that were all not potted. I am willing to believe that the Epiphones in question are pieces of crap good for only being played through clean channel amps and doing jazz tunes... not that I dislike jazz... but there's always a possibility that the people in the sweatshops of Thailand might have overlooked a few key elements in building my guitars rendering them incapable of playing Metallica without noisy woo woo sounds.

If I do find out that these three bridge pickups were not potted, as I'm sure the PG, JB, and 59, should be, I'm afraid I won't be making any more purchases from SeyDunc... but I really don't believe that is the case.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Instead of magnets, you got pups with Mexican jumping beans in them. Spray them very heavily with deodorant (they hate that, and will soon die from asphyxiation).
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Curses. If there's anything I hate more it's mexican food! Anybody seriously never seen this before? Cmon I cant be the first guy to have pickups prone to seizures! Help a brotha!
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

if you leave your axe in the car and it gets hot, the wax can melt to a greater or lesser extent which can affect damping. The same low frequency feedback thing has happened to me. Its definitely more noticeable when using a lot of gain and low end. Everything counts in terms of reducing feedback tho. Try using a piece of closed cell foam instead of pickup mounting screws. That helps a bit cos it damps a little of the vibration coming through the mounting screws.
 
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Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Sure thing. How would I go about foaming in the guitar? And should I attempt to re pot the pickups?
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

How stiff are the springs on the mounting screws for the pickups? I've had feedback issues with weak springs and loose screws plenty in the past.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

This is a good question. I do not know the answer off the top of my head as I haven't taken the pups out of these guitars in a long time. What am I looking for her, exactly??
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

This is a good question. I do not know the answer off the top of my head as I haven't taken the pups out of these guitars in a long time. What am I looking for her, exactly??

Just make sure that the pickups aren't vibrating due to weak spring pressure or loose screws on the mounting rings.

Sent from my DROID RAZR HD using Tapatalk 4 Beta
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

I won't listen to is the ever famous, "Why dontcha turn your darned distortion down

You don't want your problem solved, then.

Get back to your goat skull crushing and leave the good people of the Forum alone.

We only help people that actually wanna get helped.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Pull the pickups up and stuff a wad of gray foam rubber under each one. If your fingers make the howling feedback go away, the foam rubber trick will probably work.

While you're at it, unbolt the pickups, install the new Duncan springs that came with the pickups, as well as stuffing the foam in there. That will probably solve your problem.

What's happening is your pickups vibrate when the high volume/high gain sound waves hit them. When something tiny is vibrating, it's a higher pitched squeal. When something bigger is vibrating, like the whole pickup, then it emits a low frequency howl.

Hope this helps.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

That makes a great deal of sense. I actually have this issue with the seydunc 59 and while i am using the springs that came with the pickup, the tech i just sent it to seemed similarly curious but put some foam inside the cavity. We inspected it with my monster little orange and it found a way, that booming feedback, the climb into my sound. I took it home and it was the same thing. But, the wiggling pickup seemed to wiggle less so tonight i will stilll stick more foam from the seydunc boxes. Im hoping duct tape isnt the answer. I get the feeling im the only guy with this problem.

How on earth does james hetfield play with massive gain and volume and gets no woooooooooom? Paradox.

And mr kojak i mean no harm. Let me reiterate; the distortion stays distorted. I would like to not use a noisegate. And I like billy goats.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

That makes a great deal of sense. I actually have this issue with the seydunc 59 and while i am using the springs that came with the pickup, the tech i just sent it to seemed similarly curious but put some foam inside the cavity. We inspected it with my monster little orange and it found a way, that booming feedback, the climb into my sound. I took it home and it was the same thing. But, the wiggling pickup seemed to wiggle less so tonight i will stilll stick more foam from the seydunc boxes. Im hoping duct tape isnt the answer. I get the feeling im the only guy with this problem.

How on earth does james hetfield play with massive gain and volume and gets no woooooooooom? Paradox.

And mr kojak i mean no harm. Let me reiterate; the distortion stays distorted. I would like to not use a noisegate. And I like billy goats.

I sometimes play with more gain than Papa Het and I don't get any uncontrollable feedback. I just have good spring pressure and my pickups don't wiggle a lot.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Ok guys I went and stuffed this bridge pickup cavity with pickup box foam. Um not trying to jynx myself here, but I think it may be a step in the right direction. I cranked it up, and it seems to be tame... For now! I'd like to day thanks for everybody's input, especially Gearjoneser, that was great info. I have a gig Friday, and if you guys don't hear back from me its because i had no issues!
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Sounds to me like the amount of gain is causing the pickups to become microphonic. They need to be dipped. There are plenty of threads here on how to wax dip pickups do a search. But in essence I like to use a double boiler, melt Gulf Brand wax in the top pot. Remove the pickup from the guitar. I wrap the leads around a pencil or dowel and submerge the pickup in the wax. Let the pickup sit while watching it carefully. Make sure the bubbles stop before you remove the pickup., then remove the pickup from the wax and set it on a paper plate to cool. Once its cool you can wipe off the excess and reinstall the pickups. With Humbuckers you will need to remove the cover to wax dip the pickup, then after the pickup is dipped I like to install the pickups cover and redip it with the cover on. Now this should add some warmth to the pickup and any microphonics should be gone entirely. I've had to do this with almost every Telecaster pickup I have changed. Les Pauls or Humbuckers is usually not as much trouble but I have a few that I have done this to also. Mainly because they were in semi hollow guitars... This really can't hurt anything and it should warm up a bright pickup as well.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

I may have little choice. My issued arose to no avail last night and it was a very frustrating experience. I kept thinking all night, boy I just bought a killer new amp and i have three Seydunc pickups that are all just going kerplunk on me. I'll still not willing to accept that my Pearly Gates, 59, and JB bridges arent potted. But i am so lost on this problem Im going to consider repotting one just to test that theory.

I honestly don't feel like i use that much gain on the orange. I hit it at about 2 oclock and it gives me a nice crunch with good sqeauls and chug. Very middle of the road rock tone, not slipknor. I have a friend who used a big bad 1987 jcm 800 50watt Lead Series that got even raunchier gain and his Les pauls with jbs and emgs never had this problem. Im pretty bummed as to why this issue is so persistant with all my guitars
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

Just make sure that the pickups aren't vibrating due to weak spring pressure or loose screws on the mounting rings.

I actually stopped using springs to mount my pickups. I replace the mounting springs with a similar length of heatshrink on the humbucker height screw; that way there is very little risk of stray vibration.

Also, keep in mind that the more volume you use, the less gain and bass is necessary for the same sound. Really, the problem sounds like less of your guitar and pickups and more about the way you're using your amp. Even if it is not gain, you might need to EQ a few frequencies out of your sound to reduce that howling sound.
 
Re: Vibrating, wiggling, feeding back pickups. Why do they do it? Any cures?

I have this issue with a Cool Rails in the bridge, anyone experience this?
 
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