Cylinder head of loudspeaker
In a loudspeaker with permanent magnet fixes and mobile Bobine:
it is soft ferromagnetic the material part connected to the back of the permanent Aimant on the one hand and to the salad bowl on the other hand, making it possible to concentrate magnetic flow permanent magnet around the mobile reel; wind mobile involving, under the effect of the electrical signal which crosses it, the membrane, generally of conical form , which produces the aural signal itself.
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