Plat joueur Onze microphone 1925 Lee retour cuisiner un plat
Marconi-Reisz Carbon Microphone (circa 1930) Just the job for a Kings Speech or two! Also very popular with other personalities of 1930's European showbiz! | Martin Mitchell's Microphones
Microphones page 2
Analog Recording. A Brief History of Sound Recording Before actual sound recordings existed, several mechanical formats were developed to reproduce. - ppt download
Collection of Twelve American Modernist Microphones (circa 1925-1946) | Artsy
Lot-Art | A Western Electric carbon microphone, type 387, United States, ca. 1925. One of the most recognizable microphones of the early years of broadcasting.
1925 First Electrical Recording - Stokowski - Philadelphia Orchestra