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Electro-Voice Model 650 & 645 Advertisement
Advertisement for the Electro-Voice Model 650 and 645.
Electro-Voice Catalog Advertisement
Electro-Voice catalog advertisement for various velocity, dynamic, and carbon microphones.
Astatic Crystal Microphones Advertisement
Advertisement for Astatic crystal microphones
Amperite Velocity Microphones Advertisement
Advertisement for various Amperite velocity microphones.
The History & Evolution of the Microphone
Book containing a variety of scans and photos related to microphones throughout history. This book was actually given directly to Mr. Steele from Bob Paquette.
Uni-Directional Microphone Technical Data Sheet
Technical data sheet for the RCA MI 3043 (or KU-2A).
Western Electric 640AA + RA-1095 Amplifier Advertisement
Advertisement for the Western Electric 640AA Condenser microphone and RA-1095 Amplifier.
Electro-Voice 643 Advertisement
Advertisement for the Electro-Voice 643, a unidirectional shotgun microphone.
Unidirectional "Shotgun" Microphone Diagram
Diagram of a unidirectional microphone from the first patent for such a microphone, patented in 1963.