http://plus.maths.org/content/designing-loudspeakers
EXCERPT: The loudspeaker cone is forced to vibrate by an electric current passing through a coil at its base set in a magnetic field. When the cone vibrates, the vibration is transferred to the air and thus to our ear-drums. In this article we consider briefly two aspects of the loudspeaker. Firstly, the vibration of the cone itself and secondly, the air in the box or cabinet which contains the cone....
EXCERPT: The loudspeaker cone is forced to vibrate by an electric current passing through a coil at its base set in a magnetic field. When the cone vibrates, the vibration is transferred to the air and thus to our ear-drums. In this article we consider briefly two aspects of the loudspeaker. Firstly, the vibration of the cone itself and secondly, the air in the box or cabinet which contains the cone....