Loudspeaker, what happens here in terms of Magnetism

-So the Force can be used to make things Move back and Forward -The loudspeaker has a Coil of Wire, that has a Magnet surrounding it, and another Magnet in the Coil -A.C Currents are given to the Coil of Wire, that is Wrapped around the Base of the Cone. -The Current makes a Magnetic Field, it acts with the Magnetic Field from the Magnets; the Coil has to Move in a Direction -Since however its A.C current, the Current will keep changing Direction. If the Current's Direction Change, the Movement of the Coil will also change. -This change in Movement will make the Cone Vibrate. These Vibration makes some Pressure Variations in the Surroundings, Sound is created