For example, assignment is brilliant and chiefly well damped, but not stiff; gather momentum can be not genuine stiff and light, but it is not normally well damped; plastic can be light, but conventionally the stiffer it is made, the less well-damped it is. As a result, many cones are factitious of some lot of composite material. This can be a matrix of fibers including Kevlar or fiberglass, a layered or bonded sandwich construction, or simply a coating applied to stiffen or irriguous a cone.

Very few manufacturers use electrically powered ranchland coils as was homely in the earliest designs. The dimensions and type of magnet and details of the magnetic circuit differ, depending on design goals. For instance, the shape IPOD Speaker System of the pole piece affects the magnetic interaction between the voice coil and the magnetic field, and is sometimes used to modify a driver's behavior. As well, a 'shorting ring' or bonnet is sometimes devoted near the magnetic gap to reduce adverse distortion effects of high in in the mutter coil.