PROFX, a specialist audio video and automation company, was founded in 2000 at Bangalore, India. It was one of the first AV brands in the country to focus on specific requirements of the audiophile community, introducing them to a world-class audio and video experience.
1.Cone Speaker
A Brief History of the Cone SpeakerWhen recorded audio first found its way into American homes via Thomas Edison's phonograph, the playback devices were mechanically powered. Large, tapered horns were used to project sound (See the photo on the right). In 1898 Oliver Lodge invented a "bellowing telephone" loudspeaker which was very similar to the modern, common cone speaker. However, because electrical signal amplification was not possible until the invention of the triode vacuum tube in 1906, Lodge's "bellowing telephone" wasn't used as a loudspeaker for any audio system. Later, in the 1920s, Bell Laboratories began to develope an audio system to playback the newly invented, electrically cut phonograph records. Bell Laboratories developed many speaker prototypes including designs based on Lodge's cone, as well as electrostatic type loudspeakers. Due to the large size of the electrostatic design, Bell Laboratories ultimately went with a cone design. The moving-coil (dynamic) cone speakers developed by Bell Laboratories laid the foundation for the common cone speakers we use today.
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1.Cone Speaker
A Brief History of the Cone SpeakerWhen recorded audio first found its way into American homes via Thomas Edison's phonograph, the playback devices were mechanically powered. Large, tapered horns were used to project sound (See the photo on the right). In 1898 Oliver Lodge invented a "bellowing telephone" loudspeaker which was very similar to the modern, common cone speaker. However, because electrical signal amplification was not possible until the invention of the triode vacuum tube in 1906, Lodge's "bellowing telephone" wasn't used as a loudspeaker for any audio system. Later, in the 1920s, Bell Laboratories began to develope an audio system to playback the newly invented, electrically cut phonograph records. Bell Laboratories developed many speaker prototypes including designs based on Lodge's cone, as well as electrostatic type loudspeakers. Due to the large size of the electrostatic design, Bell Laboratories ultimately went with a cone design. The moving-coil (dynamic) cone speakers developed by Bell Laboratories laid the foundation for the common cone speakers we use today.
2.Speaker Words and Phrases
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