Unidynes

The Shure 1940 Catalog profiled
the many microphones available for different
applications and demonstrated the Company’s
focus on marketing and promotion. The colorful
catalog had dramatic images and detailed
product descriptions that explained the uses
and unique characteristics of each microphone.

The 1940 Shure microphone line included models for “amateur, police, and commercial ’phone.” Each of these popular units featured a “Built-in R.F. filter to protect against burnouts, a moisture-proof Grafoil Bimorph Crystal, and a built-in cable connector.”
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