I was wondering for a while about this, and saw that the owner of Zexcoil had done some research on the effects of shielding and shielded cable on capacitance in electric guitars.
Plainly, that a guitar with shielded cavities and unshielded internal wiring has less capacitance than a shielded guitar with shielded wiring. As in the 4 conductor shielded wiring found on humbuckers. The article is a bit wordy but clear in its results. I’m wondering if anybody else has found this to be true. I’m also wondering if anybody has simply used unshielded 4 conductor wiring along with a ground wire for the baseplate, and with shielded cavities for a good result.
While I’m near the topic, I shielded my guitar fully, including the pickup cavities. I have direct mounted pickups with the screws going through the baseplate screws through the copper foil into the wood. Perhaps I should’ve trimmed the foil away from the holes more? I’ve noticed some noise since I last swapped my pickups out after the shielding and I think it’s just the house electrical environment changes but I wanted to eliminate the source being a possible ground loop between the baseplate ground to the electronics and the baseplate possibly grounding through the shield to the electronics. I didn’t think it was possible that a guitar could have two different ground potentials because the ground leaves the guitar through one jack but is it possible? I know people say to have every thing grounded to one point inside the guitar but I haven’t seen the science behind it demonstrated.
Plainly, that a guitar with shielded cavities and unshielded internal wiring has less capacitance than a shielded guitar with shielded wiring. As in the 4 conductor shielded wiring found on humbuckers. The article is a bit wordy but clear in its results. I’m wondering if anybody else has found this to be true. I’m also wondering if anybody has simply used unshielded 4 conductor wiring along with a ground wire for the baseplate, and with shielded cavities for a good result.
While I’m near the topic, I shielded my guitar fully, including the pickup cavities. I have direct mounted pickups with the screws going through the baseplate screws through the copper foil into the wood. Perhaps I should’ve trimmed the foil away from the holes more? I’ve noticed some noise since I last swapped my pickups out after the shielding and I think it’s just the house electrical environment changes but I wanted to eliminate the source being a possible ground loop between the baseplate ground to the electronics and the baseplate possibly grounding through the shield to the electronics. I didn’t think it was possible that a guitar could have two different ground potentials because the ground leaves the guitar through one jack but is it possible? I know people say to have every thing grounded to one point inside the guitar but I haven’t seen the science behind it demonstrated.
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