We get a lot of questions about Control Pots, so we have decided
to provide this basic Control Pot Guide. While which pots are right
for you and your project are always a matter of preference,
hopefully this guide will point you in the right direction.
- Standard Pots come in 2 different general variations in the
Taper. Audio Tapered Pots ("A" Pots) have a more gradual
variance in the swell as the shaft is turned, while the Linear
Tapered Pots ("B" Pots) have more of a sudden "drop off" when
the shaft is turned. Standard Pots are also available in a
variety of values (traditionally measured in Ohms). The rule of
thumb for guitars is to use Pots rated at 250k for guitars using
Single Coil pickups, or Pots rated at 500k for guitars that have
dual coil Humbucker pickups. Guitars with Active Pickups are to
be used with Pots rated at 25k.
- A Push/Pull Pot is basically 2 separate components (a standard
pot, and a standard mini on/on DPDT switch) that are both controlled
by the same shaft (turn it left to right, to operate the pot, OR,
pushing it in or pulling it up controls the switch). The
potentiometer portion of the unit is wired just like any other pot
(wire it straight for Volume, or add a Capacitor to use it as a Tone
pot). The On/On portion of the unit functions and gets wired up like
any other standard DPDT (Double Pole - Double Throw) Switch.