Moving-coil loudspeaker
Altavoz de bobina móvil
- Date
- 1924–1925 · confidence high
- Place
- Schenectady, New York, United States
- Credited to
- Chester Rice and Edward Kellogg (General Electric, 1925); Oliver Lodge (1898 patent); Ernst Siemens (1877)
- People
- 👤 Chester Williams Rice1888–1951👤 Oliver Joseph Lodge1851–1940
- Field
- Communication
What it is
Loudspeaker with a coil in a magnetic field and a paper cone, with flat response and enough power to fill a room. It replaced the horns and headphones of early radio.
What it led to
- Radio and sound cinema as a collective experience
- Public address systems and mass rallies
- High fidelity and sound systems
Built on
Made possible
- Radio broadcasting1906–1920
- Sound film1926–1927
- Public address systems
- Home console radio