Starting from fully clockwise, the upper adjustment range precisely attenuates the treble frequencies while leaving the midrange intact. As the control approaches full counterclockwise, the response shifts to resonate with the main tone capacitor, creating a dark vocal tone. This action will feel very vocal and usable to those accustomed to tone controls of traditional passive pickups.
The wiring method is similar to a volume control in that there is an input and an output. From a signal flow standpoint, placing the tone control before the volume is recommended so that the volume can be adjusted without affecting the tonal response This is unlike many passive tone control wiring schemes, but should produce the optimal result, although other wiring schemes and experimenting are encouraged.
Similar to tone controls for passive pickups, if the reactive tone control needs to follow a volume control (such as with a dual volume / single tone configuration) the tone control will operate in the optimal fashion when the volume control is at maximum. The reactive tone circuit is tuned and optimized for pickups with a 2k output impedance.