From Fender:
A new generation of tone, the Yosemite P Bass pickup is designed for rich, authentic Fender sound. This seismic-sounding split-coil Precision Bass® pickup uses alnico 5 magnets and Formvar-coated wiring to create an expressive, well-defined voice that’s highly musical and dynamic, while the shellac coating controls potentially runaway feedback without compromising response.
DC Resistance: 12K