The Electro-Voice RE15 dynamic cardioid microphone
Description and Applications The Electro-Voice RE15 is a dynamic cardioid mic created especially for the most exacting professional applications. Emphasizing a major technological breakthrough, the RE15 features a degree of directional control so effective that frequency response is virtually independent of angular location of sound source. The result is a microphone that generates no off axis coloration, yet provides greatest possible rejection of unwanted sounds. A super cardioid, the RE15 provides its greatest rejection at 150° off axis. (Typical cardioids provide greatest rejection at 180°.) This assures greatest rejection in the horizontal plane when the microphone is tilted in its most natural position, 30° from horizontal (as on boom or floor stand). An easily operated “bass-tilt” switch corrects spectrum balance for boom use and other longer reach situations.
Using the mechanical nesting concept of design, by means of which the internal transducer parts are nested one within another, the RE15 transducer is a nearly solid mechanical structure that is highly resistant to damage from mechanical shock. The exclusive non-metallic Electro-Voice Acoustalloy diaphragm is virtually unaffected by extremes of atmospheric conditions. A carefully designed steel outer case provides excellent magnetic shielding, and additional mechanical protection. Finish is nonreflecting matte satin nickel.
Quoted from Electro-Voice Engineering Data, Part No. 533688, 1967.
From time to time Electro-Voice would publish Microphone Facts for the operating engineer, a series of newsletter-styled three-ring binder-punched bulletins that described new products. Here is an example from August, 1967, which announces the Model RE15. It is six pages in length, and is formatted for high-resolution printing on 8½ × 11-inch paper. It is a 4.6-megabyte PDF.