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STW's answer links to a Faraday cage (+1 for that!). I just wanted to explain that in a guitar context. It's a kind of wrapper in which your hum-sensitive gear (coils) go. The screening on guitar cables is effectively a faraday cage: The earth wire is a 'tube' of copper sheath around the signal wire, with an insulator between. That is: The earth wire acts ...


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If your noise changed, then either your equipment or environment changed. Your connection could be considered either, depending on it's role. It could be adding noise itself, or it could have changed the voltage your pickups are operating at and increased their sensitivity. Messing with the volume control could help identify a line voltage issue. Your ...


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This sounds perfectly normal; humbuckers get their name because they "buck the hum", the hum being electrical interference which the coils are picking up like an antenna. A humbucker is effectively two single coils configured to cancel out the interference from each other. The exact noise you'll hear can vary quite a bit depending on the building's wiring ...


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You are experiencing electrical interference from one or more external sources. Single-coil pickups are particularly sensitive to this. For instance, are you using the guitar in front of a computer with an old-style cathode ray tube (CRT) monitor? Are you playing in a room illuminated by flourescent tube lighting? You may need to play your guitar in a room ...



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