Shure BETA91A User Manual page 7

Half-cardioid condenser microphone
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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
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]
[1]
1 Pa=94 dB SPL
1 Pa=94 dB SPL
[2]
THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL
microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL
phone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL
amplifier when applied input signal level is equivalent to cartridge output at specified SPL
when applied input signal level is equivalent to cartridge output at specified SPL
[3]
S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise, A-weighted
tween 94 dB SPL and equivalent SPL of self-noise, A-weighted
lent SPL of self-noise, A-weighted
[3]
ed
S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise, A-weighted
[4]
All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with
slightly decreased headroom and sensitivity
phone operates at lower voltages, but with slightly decreased headroom and sensitivity
Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity
[4]
All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with
slightly decreased headroom and sensitivity
phone operates at lower voltages, but with slightly decreased headroom and sensitivity
[4]
, 5.4 mA
[1]
[1]
1 Pa=94 dB SPL
1 Pa=94 dB SPL
[3]
 S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise, A-weight-
[4]
 All specifications measured with a 48 Vdc phantom power supply. The micro-
[4]
 All specifications measured with a 48 Vdc phantom power supply. The micro-
[1]
1 Pa=94 dB SPL
[2]
[3]
 S/N ratio is the difference between 94 dB SPL and equiva-
[4]
All specifications measured with a 48
Shure Incorporated
[2]
THD of
[2]
 THD of micro-
[2]
 THD of microphone pre-
THD of microphone preamplifier
[3]
 S/N ratio is the difference be-
7/8

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