Shure BETA57A - Proximity Effect; Specifications

Shure Incorporated
5/7
Proximity Effect
Unidirectional (cardioid) microphones progressively boost bass frequencies by 6 to 10 dB below 100 Hz when the microphone
is at a distance of about 6 mm (1/4 in.) from the sound source. This phenomenon, known as proximity effect, can be used to
create a warmer, more powerful sound. To prevent explosive low frequency sound during close-up use, the bass response
gradually rolls off. This provides greater control and helps the user take advantage of proximity effect.
Specifications
Type
Dynamic (moving coil)
Frequency Response
50to16,000Hz
Polar Pattern
Supercardioid
Output Impedance
290Ω
Sensitivity
at 1kHz, open circuit voltage
-51dBV/Pa(2.8mV)[1]
Weight
Net
0.275kg(0.6lbs)
Connector
Three-pin professional audio (XLR), male, balanced
Housing
Silver blue enamel-painted die cast metal with hardened, matte-finished steel mesh grille
[1] 1 Pa=94 dB SPL