Peavey humbucker model - Manual (Page 27)

Balance Control & Push-Pull or Push-Push Coil Tap
2
To create a specific tone, some instruments feature a balance control that determines the mix of pickup
signals being sent to the amplifier. In the center (detented) position, both pickups send the same vol-
ume. Turning the knob counterclockwise selects more bridge pickup signal, while turning it clockwise
sends more neck pickup signal.
When engaged, this switch, usually located on a Volume Control or Tone Control, allows one coil from a
dual pickup to be turned off, effectively cutting the output in half. Note that as the humbucker is now
functioning as a single coil, it will exhibit more hum or noise.