The Phonetron, based on patent No. 1,847,935 filed Apr. 23, 1921, by C. L. Farrand, was the first coil-driven direct-radiator loudspeaker to be sold in the U.S. and was well-received, competing with the horns used by table radios
© 2001 by Steven E. Schoenherr. All rights reserved.
Recording Technology History Notes
| this page revised Jan. 15, 2001