Shure BETA91A User Manual

Shure Incorporated
7/8
Self Noise
equivalent SPL, A-weighted, typical
29.5 dBSPL-A
Common Mode Rejection
(20 Hz to 200 kHz)
≥55dB
Frequency Contour Switch
7 dB of attenuation centered at 400 Hz
Power Requirements
11–52 VDC phantom power , 5.4mA
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Weight
470g(16.6oz.)
Connector
Three-pin professional audio (XLR), male, balanced
1 Pa=94 dB SPL 1 Pa=94 dB SPL 1 Pa=94 dB SPL 1 Pa=94 dB SPL 1 Pa=94 dB SPL
THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL THD of
microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL THDofmicro-
phone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL THDofmicrophonepre-
amplifier when applied input signal level is equivalent to cartridge output at specified SPL THD of microphone preamplifier
when applied input signal level is equivalent to cartridge output at specified SPL
S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise, A-weighted S/Nratioisthedifferencebe-
tween 94 dB SPL and equivalent SPL of self-noise, A-weighted S/Nratioisthedifferencebetween94dBSPLandequiva-
lent SPL of self-noise, A-weighted S/Nratioisthedifferencebetween94dBSPLandequivalentSPLofself-noise,A-weight-
ed S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise, A-weighted
All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with
slightly decreased headroom and sensitivity Allspecificationsmeasuredwitha48Vdcphantompowersupply.Themicro-
phone operates at lower voltages, but with slightly decreased headroom and sensitivity All specifications measured with a 48
Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity
All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with
slightly decreased headroom and sensitivity Allspecificationsmeasuredwitha48Vdcphantompowersupply.Themicro-
phone operates at lower voltages, but with slightly decreased headroom and sensitivity
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Shure BETA91A Specifications

General

Type	Condenser
Frequency Response	20 Hz to 20 kHz
Polar Pattern	Half-Cardioid
Connector	XLR
Max SPL	155 dB SPL
Power Requirements	11-52 VDC phantom power