So I take off my bridge and turns out there is a hole inside of it. Doesn't look factory made, there was a string sticking out of the whole I tug on it and it's a wire. It wasn't soldered to anything does anyone know anything about this or why it's there?
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WHAT!?
- Thread starter AlphaMale
- Start date
At some point it *was* soldered(likely until you tugged on it) to the ground probably on the volume knob, it works much the same as the ground on a 3 prong plug in. You now need to find a wiring schematic for your particular bass and re solder that ground to where ever it was hooked up to your bass.
"How does it work?"
What causes the humming in audio systems ?
Audio and video systems need a reference point for their voltages. Generally referred to as common or ground, although it may not be actually connected with the earth, this reference remains at "zero volts" while other signal voltages "swing" positive (above) and negative (below) it. Physically, the common may be a wire, a trace on a printed-circuit board, a metal chassis, virtually anything that conducts electricity. Ideally it should be a perfect conductor, but in any practical system it is not. As the complexity and size of the system is increased, the imperfect conductivity of the common (ground) conductor inevitably causes problems.
Hum and buzz (50Hz/60Hz and it's harmonics) occur in unbalanced systems when currents flow in the cable shield connections between different pieces of equipment. Hum and buzz can also occur balanced systems even though they are generally much more
The cable shield currents and ground voltage differences are caused by several mechanisms. The second most common source of hum and buzz is the voltage difference between two safety grounds separated by a large distance or the voltage difference between a safety ground and an "Earth" ground (such as a grounded satellite dish or cable TV source). This problem is usually called "ground loop". This is the most common one in severe humming problems.
Hum and buzz can also be magnetically induced or capacitively induced directly into signal cables. Or the noise current can leak from mains input through capacitance between the A.C. power transformer primary and secondary windings which causes that a portion of the A.C. line voltage will ALWAYS be capacitively coupled directly to audio circuit ground. This capacitivly coupled power line signal will usually contain significant harmonics out to 1MHz or more. These signals will cause currents to flow in the cable shields thus adding this noise directly to the audio signal.
What causes the humming in audio systems ?
Audio and video systems need a reference point for their voltages. Generally referred to as common or ground, although it may not be actually connected with the earth, this reference remains at "zero volts" while other signal voltages "swing" positive (above) and negative (below) it. Physically, the common may be a wire, a trace on a printed-circuit board, a metal chassis, virtually anything that conducts electricity. Ideally it should be a perfect conductor, but in any practical system it is not. As the complexity and size of the system is increased, the imperfect conductivity of the common (ground) conductor inevitably causes problems.
Hum and buzz (50Hz/60Hz and it's harmonics) occur in unbalanced systems when currents flow in the cable shield connections between different pieces of equipment. Hum and buzz can also occur balanced systems even though they are generally much more
The cable shield currents and ground voltage differences are caused by several mechanisms. The second most common source of hum and buzz is the voltage difference between two safety grounds separated by a large distance or the voltage difference between a safety ground and an "Earth" ground (such as a grounded satellite dish or cable TV source). This problem is usually called "ground loop". This is the most common one in severe humming problems.
Hum and buzz can also be magnetically induced or capacitively induced directly into signal cables. Or the noise current can leak from mains input through capacitance between the A.C. power transformer primary and secondary windings which causes that a portion of the A.C. line voltage will ALWAYS be capacitively coupled directly to audio circuit ground. This capacitivly coupled power line signal will usually contain significant harmonics out to 1MHz or more. These signals will cause currents to flow in the cable shields thus adding this noise directly to the audio signal.
There's the most likely answer, right there.
Get your baby working again so you can rock out
Then go to Congress and lobby for the necessity of a warning label being put on all basses so this kind of travesty doesn't happen again.
...we have to protect the children...the children...
My wire on my MIM jazz isn't soldered on under the bridge either. just sits there. It is however soldered on the other end.
it wouldn't be soldered to the bridge, just have bare wires exposed and touching the metal of the bridge would be enough.
make sure to write to your congressman/woman and lobby for a No Bass Left Behind Act.
Well you guys should have seen the hole, it didn't look like it was made intentionally.
Ah, can someone explain why it has to be connected to the bridge? That is the part that perplexes me. I understand it won't work without it but why?
Ah, can someone explain why it has to be connected to the bridge? That is the part that perplexes me. I understand it won't work without it but why?
Look up grounding, or earthing if are part of the UK islands.
Looks like they cut it going in at an angle on mine, not straight down. Looks like a worm hole.
Looks like they cut it going in at an angle on mine, not straight down. Looks like a worm hole.
lol, would you expect more from AlphaMale? Cut him a break this one time
.Edit: maybe not.
