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A way to measure a guitar pickups frequency response?

post #1 of 3
Thread Starter 

If I'm not mistaken, pickups in a guitar are just responding to disturbances in their electromagnetic field and not actual acoustic sound. So anything magnetic/metallic vibrating near a guitar pickup will be, well, picked up. Does this mean that if I play white noise through a headphone or other speaker near my guitar pickup, it will pickup the magnet on the speaker vibrating as white noise? If so, then on a frequency analyzer would I be looking at a graph of the frequency response of my guitar pickups?

post #2 of 3

http://web.archive.org/web/20110525060505/http://online.physics.uiuc.edu/courses/phys498pom/498emi_guitar_pickup_results.html


Edited by jcx - 3/21/13 at 6:56pm
post #3 of 3

They will pick up oscillatory movement of a magnetic object suspended in the magnetic field of its poles.  So if you can vibrate and suspend a manetic/magnetized object in the PUs magnetic field it will induce an alternating current through its coil windings.   Key factor is proximity though.  The magnetic fields from each pole piece only extend so far, PU makers fine tune the magnetic fields for range and strength.  If the magnetic field is too strong it will damp the vibration of the string and reduce sustain.

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