Electro-Voice Model 915 Crystal High Impedence Microphone

Mic is in good working condition.
Element dated 12-2-53.
Replaced foam surround.
Some light pitting to case, see photos.
Impedence 34.3 ohms.
Known to be a good harp harmonica mic.

The Electro-Voice Models 915 and 915 S are multi-purpose, crystal type microphones. They are very useful for conference or group pick-up, home tape recording and paging systems. The two microphones are identical except that the Model 915 S is equipped with an OFF-ON switch. They can be used in any position, in hand, on table, on stand, or overhead. Smooth response range from 60 to 7000 cps. These microphones are essentially omnidirectional becoming directional at higher frequencies. The case is constructed of diecast zinc with satin chrome finish.

SPECIFICATIONS

High Impedance Output: 50 db (0 db equals I volt/dyne/cm²) RETMA

Sensitivity Rating:-150 db

Frequency Response: Uniform from 60 to 7000 cps

Polar Pattern: Non-directional, becoming directional at higher frequencies

Generating Element: Crystal.

Cable: 5-ft, single-conductor shielded

Case Material: High-pressure diecast zinc Finish: Sating Chrome