Glossar

Contact Microphonics

When two electrical conductors are mechanically joined, an electrical resistance forms between the two conductors. This resistance depends on several factors, among them, from the mechanical force with which the two conductors are pressed together. The greater is the force, the smaller the resistance. If the contact point vibrates or resonates, this force can change considerably in frequency with the vibration so that the signal is transmitted better or worse in this rhythm. This effect occurs most often with loudspeakers and can be clearly heard as a distortion to the signal. Manufacturers of loudspeakers have made considerable efforts to construct their chassis’ to be as passive as possible. Nevertheless, vibrations cannot be completely eliminated and these transmit themselves to the binding posts.

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