Engineering Acoustics/Transducers - Loudspeaker
The purpose of the acoustic transduer is to convert electrical energy into acoustic energy. Many variations of acoustic transducers exists, although the most common is the moving coil-permanent magnent tranducer. The classic loudspeaker is of the moving coil-permanent magnet type.
The classic electrodynamic loudspeaker driver can be divided into three key components:
1) The Magnet Motor Drive System
2) The Loudspeaker Cone System
3) The Loudspeaker Suspension
This illustration shows a cut-away of the moving coil-permanent magnet loudspeaker.
Woofer Picture here
Magnet Motor Drive System
Loudspeaker Cone System
An equivalent circuit can be used to model all three loudspeaker components as a lumped system. This circuit provides a model of the loudspeaker and its separte sub-componenets and can be used to provide insight into what parameters alter the loudspeaker's performance.