Hi! I have a question andI hope you can help me, I got a Yamaha rbx 170 bass guitar like 4 months ago, I have a Fender Rumble amp, and I deal with a little noise when I turn the control up, but, if I turn it to half everything is fine, yes there is some noise but it is practically imperceptible And it doesn't bother me, anyway, yesterday I connected the amplifier, the bass and noticed a terrible buzz, it didn't matter where I moved, nor change rooms or power outlets, I know the bass is properly grounded but it is not shielded, so I was wondering if this problem could be caused by my neighbor's arc welder since the problem did not exist until he returned to work and taking into account that electric arc welders produce electromagnetic interference, He is approximately 30 or 40 meters from me, i hope you can help me guys, also, sorry for my english, it's been a while since i wrote something
 
  • Like
Reactions: Alan Ace Cooper
Hi! I have a question andI hope you can help me, I got a Yamaha rbx 170 bass guitar like 4 months ago, I have a Fender Rumble amp, and I deal with a little noise when I turn the control up, but, if I turn it to half everything is fine, yes there is some noise but it is practically imperceptible And it doesn't bother me, anyway, yesterday I connected the amplifier, the bass and noticed a terrible buzz, it didn't matter where I moved, nor change rooms or power outlets, I know the bass is properly grounded but it is not shielded, so I was wondering if this problem could be caused by my neighbor's arc welder since the problem did not exist until he returned to work and taking into account that electric arc welders produce electromagnetic interference, He is approximately 30 or 40 meters from me, i hope you can help me guys, also, sorry for my english, it's been a while since i wrote something
Does the interference go away if you play only the split pickup?
 
Does the interference go away if you play only the split pickup?
When using the single coil, after a certain volume i can hear some noise, a different type of noise if that makes sense, but It Is my understanding that this is a normal behaviour in single coils AND It doesn't bothers me as i like the sound with the single coil almost all the way down. On the other hand, the tone knob does make the noise i'm talking about louder when i turn It up past the middle, It Is barely perceptible but its there, i can make It dissapear with a little adjutment, however, yesterday the buzzing was unbearable and today In the morning the buzz was as always, completely controllable and practically inaudible with some adjustments, That's why I'm suspicious of my neighbor's welder, lol

If It helps, the buzz gets quieter when i place my hands on the strings
 
What I mean is that high-current industrial machines can put a lot of noise on the power line and that noise can leak into every single circuit connected to that leg of the AC power.

The noise isn't from the power line, it's carried on the power line.

See it you can borrow/rent/buy (the big ones can be expensive but one for your amp shouldn't be too bad) something called an AC power conditioner and try using it. NOT a surge protector, but one that actually contains power filtering. They can clean up the incoming AC power, restoring it back to a pure sine wave.

If the problem is PLI, shielding won't make any difference.
 
What I mean is that high-current industrial machines can put a lot of noise on the power line and that noise can leak into every single circuit connected to that leg of the AC power.

The noise isn't from the power line, it's carried on the power line.

See it you can borrow/rent/buy (the big ones can be expensive but one for your amp shouldn't be too bad) something called an AC power conditioner and try using it. NOT a surge protector, but one that actually contains power filtering. They can clean up the incoming AC power, restoring it back to a pure sine wave.

If the problem is PLI, shielding won't make any difference.
I think my aunt have one, i'll see if she can lend it to me so i can test it, thanks for the explanation and the patience dude!
 
Last edited:
A 3 phase high frequency start TIG welder can cause all kinds of problems, but I doubt your neighbor has 3 phase in a residential area. I've seen them throw the ground out of phase and screw up anything with a control board.

Would a phase converter cause these same kind of problems? I know rotary converters can throw off EMI. Can they cause line interference too?
 
What I mean is that high-current industrial machines can put a lot of noise on the power line and that noise can leak into every single circuit connected to that leg of the AC power.

The noise isn't from the power line, it's carried on the power line.

See it you can borrow/rent/buy (the big ones can be expensive but one for your amp shouldn't be too bad) something called an AC power conditioner and try using it. NOT a surge protector, but one that actually contains power filtering. They can clean up the incoming AC power, restoring it back to a pure sine wave.

If the problem is PLI, shielding won't make any difference.

The non-linear current draw of these types of equipment impacts the local voltage if there is some kind of choke point, like a typical residential service transformer that I'd bet the OP is sharing with his neighbor. Hey OP, are there wires from the pole-mount transform going to both of your houses?
Anyway, wanted to chime in that this is the first thing that came to my mind before reading other responses. I just dealt with a similar issue at a show. We played there 2 months ago and everything was fine. They installed some new fans and a dimmer on the stage circuit, no escaping the noise using the same equipment as last time.
 
  • Like
Reactions: MikeMonterrubio