ok, but touching only the strings/bridge , you mean the rain water has some conductivity and could make a shot circuit between the body the wiring ?
Disagreement with my tech : very simple question : is HB ground wiring needed?
- Thread starter greekdude
- Start date
ok, but touching only the strings/bridge , you mean the rain water has some conductivity and could make a shot circuit between the body the wiring ?
Jack_TriPpEr
New member
Yes. believe that risk is the primary reason why bridge grounding is done.
JB_From_Hell
Jomo's Nimions
No. The pickups are what is picking up the noise. Humbuckers cancel 60 cycle hum, which is the buzzing present with single coils.
Rather than presenting him with a theory, I’d take a guitar with a bridge ground to him, plug it in, let him hear how quiet it is, then yank the ground and hear how it gets noisy.
ErikH
Well-known member
That's the whole point, without bridge ground, when touching the strings, you are no longer a part of the circuit so should not get a shock at all. But in the event that there is some arcing anywhere, the cap will help cut the current down.
ErikH
Well-known member
Without a bridge ground, this should not happen at all because the strings are no longer in the ground plane of the circuit, regardless of the other pieces. With bridge ground and faulty devices, even a PA outlet with an open ground (shock when lips touch the mic while playing) or your rig is in an outlet with an open ground, you will get shocked. This is why I never go anywhere to play without an outlet tester. Have found several bad outlets that way.
interesting. By design HBs sense the disturbance of its magnetic field due to strings vibration (just like SC), and by design RW/RP they can cancel the hum picked, due to being RP right (??), and by hum we mean anything which is not created due to string vibration and disturbance of the pup's magnetic field. So, if true, why HB design CANNOT cancel *this* EMI/RFI as well?
JB_From_Hell
Jomo's Nimions
No, by hum we do not mean “anything which is not created due to string vibration.” We specifically mean the 60 cycle hum.
Read this for some answers: https://www.fralinpickups.com/2018/11/12/understanding-guitar-grounding/
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So you mean that BY DESIGN, the humbucker principal works only with eliminating the 60 cycle hum?? (which where is live is 50Hz / 220V)? hard to buy...
while on the fralin site, here is a nice explanation about the humbucker principle : https://www.fralinpickups.com/2017/08/22/how-do-humbuckers-work/
why is the non-mains generated hum/hiss NOT picked by HBs??? by this theory the HBs should also cancel all EMI/RFI, (provided that it the HB which pick up the noise in the first place)
while on the fralin site, here is a nice explanation about the humbucker principle : https://www.fralinpickups.com/2017/08/22/how-do-humbuckers-work/
why is the non-mains generated hum/hiss NOT picked by HBs??? by this theory the HBs should also cancel all EMI/RFI, (provided that it the HB which pick up the noise in the first place)
JB_From_Hell
Jomo's Nimions
The wiring doesn't pick up noise. Disconnect the pickups from your guitar and see how noisy it is.
As far as what gets cancelled by the humbuckers, take your properly grounded, otherwise noise free guitar and hold it up to a computer monitor. Now hold anything with an electric motor near the pickups and turn it on. Now point a TV remote at the pickup and press a button. All of those things will generate noise that gets picked up by the pickups.
As far as what gets cancelled by the humbuckers, take your properly grounded, otherwise noise free guitar and hold it up to a computer monitor. Now hold anything with an electric motor near the pickups and turn it on. Now point a TV remote at the pickup and press a button. All of those things will generate noise that gets picked up by the pickups.
JB_From_Hell
Jomo's Nimions
No, it was an example of how humbuckers pick up all sorts of other noise.
Removing the pickups from your guitar will prove the wiring doesn’t pick up noise.
NegativeEase
New member
Total Bullshit
-yes, HB mitigate the buzzing a bit -but i's still there. He's clearly not cranking amps or playing in various spaces and clubs if he says otherwise.
however, you are in Greece which is on the 230V 50hz standard which means be it's nature their is less than half the magnetic interference emanating around your average field in your home etc.. So by default, an ungrounded HB will be inducting lights and appliance field less than in the US. - It's much worse here.
Even so -you need it -you have to have a ground path to prevent your tuners, strings, and bridge from becoming an antenna for everything from AM band stations to light bulbs.
-yes, HB mitigate the buzzing a bit -but i's still there. He's clearly not cranking amps or playing in various spaces and clubs if he says otherwise.
however, you are in Greece which is on the 230V 50hz standard which means be it's nature their is less than half the magnetic interference emanating around your average field in your home etc.. So by default, an ungrounded HB will be inducting lights and appliance field less than in the US. - It's much worse here.
Even so -you need it -you have to have a ground path to prevent your tuners, strings, and bridge from becoming an antenna for everything from AM band stations to light bulbs.
Thanks guys!! great input! Hmmm just an idea I had. In case of 50/60Hz hum the source is a stable generator of noise with predictable characteristics and applied in a uniform manner to both coils, so the balanced coils of the humbucker are able to cancel out the noise by creating currents with mutually opposite waveform. But in the case of body/bridge/strings/computers/TV/electric motors/etc the source is not predictable nor stable and even worse is not applied in a uniform manner to both coils, some coil might be closer to the noise, or having more than one sources of noise applied differently to each coil.
By grounding the bridge we get rid of all static load on the strings or external EMI/RFI picked up by the strings/bridge, which would otherwise interfere with the disturbance of magnetic field of the pups in a non-uniform manner.
By grounding the bridge we get rid of all static load on the strings or external EMI/RFI picked up by the strings/bridge, which would otherwise interfere with the disturbance of magnetic field of the pups in a non-uniform manner.
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Lewguitar
New member
I added a Lace thinline pickup to my National Tricone. It's all all steel bodied resonator guitar. The Thinline is a thin pickup about the size of a humbucker that attached with doubled sided tape and sits under the under the strings like a conventional guitar pickup.
It sounds good but it hummed and there was lots of static when I moved my hands on the strings.
I decided to mount the barrel shaped input jack between the tailpiece and bridge, and did this by loosening the strings and sliding the metal barrel under the strings. When I tuned the strings up to pitch it stays perfectly in place and is held in place against the body by the pressure of the strings.
And guess what? The hum and static disappeared!
I had grounded the pickup to the strings and body of the guitar via the metal barrel input jack.
Here's a photo of the pickups and jack: https://i.ebayimg.com/images/g/9qsAA...ay/s-l1600.jpg
It sounds good but it hummed and there was lots of static when I moved my hands on the strings.
I decided to mount the barrel shaped input jack between the tailpiece and bridge, and did this by loosening the strings and sliding the metal barrel under the strings. When I tuned the strings up to pitch it stays perfectly in place and is held in place against the body by the pressure of the strings.
And guess what? The hum and static disappeared!
I had grounded the pickup to the strings and body of the guitar via the metal barrel input jack.
Here's a photo of the pickups and jack: https://i.ebayimg.com/images/g/9qsAA...ay/s-l1600.jpg
ErikH
Well-known member
Actually, what you did is grounded the strings (and thus the tuners and bridge and any other metal part they touch) to the pickup as that is the part with the current. Regardless, same result. By grounding them, all the interference that was being picked up by them is shunted to ground. 
Resonators are so cool!
Resonators are so cool!
Lewguitar
New member
Actually, what you did is grounded the strings (and thus the tuners and bridge and any other metal part they touch) to the pickup as that is the part with the current. Regardless, same result. By grounding them, all the interference that was being picked up by them is shunted to ground.
Resonators are so cool!
The whole guitar is steel. But I didn't want to drill a hole in it or enlarge the end pin hole. Anyways, it doesn't hum, there's no static and it sounds good! Been playing it through my pedal board with a little echo from the Strymon Timeline and compression from the Wampler Ego then into my AC30.
ErikH
Well-known member
Sweet. That's gotta sound awesome. Slide on them is fun.