Peavey humbucker model - Manual (Page 26)

Pickups & Pickup Selector Switch
26
Single-coil pickups and dual-coil pickups
(humbuckers) convert your guitar’s string
vibrations into an electronic signal that is processed
by your amplifier.
Selector switches are used to quickly change
between pickups or combinations of pickups.
Typically switches are -way slotted, -way
slotted or -way toggled. Series selections,
typically found on humbucker models, combine
two coils of full output. Parallel selections combine
two coils to simulate a single coil while acting as a
hum-canceling humbucker. Some guitars feature a
push-pull volume control in place of a switch that
allows for single pickup selections.