Specification:

Voice Coil Diameter: 25.5mm / 1 inch
Total Skeleton Height: 32mm / 1.26 inch
Copper Wire Height: 10mm / 0.39 inch
Coil Material: 2 Layers Round Copper Wire
Sound Film Material: White Aluminum
Package Content: 1 x Voice Coil

Description:

A voice coil (consisting of a former, , and winding) is the coil of wire attached to the apex of a loudspeaker cone.
The item provides the motive force to the cone by the reaction of a magnetic field to the current passing through it.
It is also used for voice coil linear motors, which produce a larger force and move a longer distance but work on the same principle.