Telephone capsule or also called capsule telephone is in fact a special small-size device designed for transformation of electrical oscillations in acoustic oscillations. Telephone capsules are produced in the form of one-piece devices. Capsules fit to reproduce relatively weak sounds as they do not comprise any horn or diffuser, as, for example, heads of loudspeakers.
Today “Oktava” specialized company, an absolute leader for development, production and sales of such devices, as well as professional studio microphones, microphone headsets, hearing aids and other equipment of such type on the territory of the Russian Federation, can offer its customers two types of telephone capsules – capsules designed for operation in communication equipment, as well as small-size electromagnet telephones (overall dimensions of such devices, as a rule, do not exceed 10 mm).
Telephone capsule designed for operation in communication equipment can be used, for example, for production of telephone microphone headsets and other similar devices. Such capsule is also used for production of telephone sets and coin-box sets (of general and special purpose). Capsule of the second type, i.e. small-size electromagnet telephone, is designed for application as a part of hearing aids, telephone-microphone headsets and other similar communication equipment.