Voice Coils

There are two basic gap/coil geometries in loudspeakers, the underhung voice coil and the overhung voice coil. Of the two designs the overhung voice coil is much more common.

![[Overhung and underhung voice coils. Light grey is soft iron, dark grey is permanent magnetic material and the coil is in red.](/static/voice_coil_geometry.svg)