The lengths of the neck and bridge pickups in the original 4 string J-Basses® are not equal. Fender made the pickup lengths to match the string width at the different positions. The neck pickup is 3-5/8″ long which is slightly shorter than the bridge pickup which is 3-3/4″ long.
The lengths of the neck and bridge pickups in 5-String J-Bass® pickups are also not equal. Additionally, Fender American Standard (and American Deluxe) J-Basses® have larger pickups than other 5-String J-Basses®.
Your voice is a combination of your pickups, strings, instrument materials and construction, and playing technique. The voice of your pickups is determined by the sensing structures - the magnetic field projected onto the strings and the interaction of the magnetic field with the coils.
We offer several carefully designed pickups series with different sensing structures so you can develop your voice. Check out the sensing structures below - Blue represents a South magnetic field, and Red represents a North magnetic field. Opposite polarity fields is used for hum-cancelling.