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Horns
Edison Tech Horns were the earliest form of amplication. They were first created by Thomas Edison, Magnavox, and Victrola. The problem with horns is that they could not amplify the sound. With the help of electrical amplification in future technology, the loud sounds could help fill large public places. -
First Modern Speaker
C.W. Rice of General Electric and E.W. Kellogg of AT&T worked together in Schenectady, New York to develop the modern speaker and first electric amplification system. They created a working prototype in 1921. Rice and Kellogg solved the final problems which led to a nice crisp sound -
Leslie Speaker
The Leslie speaker is a combined amplifier and loudspeaker that projects the signal from an electric or electronic instrument and modifies the sound by rotating a baffle chamber ("drum") in front of the loudspeakers. A similar effect is provided by a rotating system of horns in front of the treble driver. -
model D101 15-inch loudspeaker
First JBL Speaker -
2 way Speaker
Another important aspect of sound at home was the invention of the active 2-way system in 1980 by Meyer Sound Laboratories. This powered speaker, made by Meyer, introduced tweeters for high-frequency sounds, woofers for low-frequency sounds, and crossover circuits to feed the signals to both drivers.