A humbucker pickup is a type of electric guitar pickup that is designed to reduce noise and hum. Here is an explanation of how humbucker pickups work:
- Electric guitars can pick up electromagnetic interference from nearby electrical devices and wiring, which creates a hum or buzz in the guitar signal. This is why single-coil pickups are notorious for hum issues.
- Humbucker pickups use two coils wired in opposite directions. This cancels out a lot of the electromagnetic noise before it reaches the pickups.
- When the two coils are wired together out of phase, the noise signals from each coil effectively cancel each other out through phase cancellation, while the guitar signal remains. This dramatically reduces hum.
- Humbucker pickups also use bar magnets and typically have a higher output than single coil pickups, resulting in a thicker, warmer, cleaner tone. The twin coils also capture more string vibration for a fuller sound.
- Humbuckers are essential for many types of rock and metal music where gain and distortion are used. The hum-cancelling effect allows heavy distortion without generating unacceptable levels of hum.
- However, humbuckers also have a darker, less bright tone compared to single coils. There is a tradeoff between noise cancellation and tonal characteristics.
In summary, humbucker pickups use dual coils to eliminate hum, at the expense of a darker tone. This makes them ideal for high-gain guitar styles where hum would be problematic.