How do you demagnetize stereo speakers?
99.999% of all speakers made since about 1930 use a permanent magnet as part of the mechanism. if you demagnetize, it will no longer speak!! Some speakers intended for use near old-fashioned CRTs may have some shielding added to prevent interaction with the electron beam. If you still need to demagnetize, about the only method is to heat the metal above the Currie point. However this will destroy the rest of the speaker components as well.
