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Shure BETA 87A Specifications
Beta 87A
Supercardioid Condenser Vocal Microphone
Cartridge Type
Electret Condenser
Frequency Response
50 to 20,000 Hz
Polar Pattern
Supercardioid
Output Impedance
150 ohms
Sensitivity (at 1kHz, open circuit voltage)
-52.5 dBV/Pa (2 mV)
1 Pascal=94 dB SPL
Maximum SPL
(1 kHz at 1% THD, 1k ohmsload)140.5 dB
Signal-to-Noise Ratio
(referenced at 94 dB SPL at 1 kHz)70.5 dB
S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
Dynamic Range
(at 1 kHz, 1 k ohmsload)117 dB
Clipping Level
(1 kHz at 0.25% THD, 1k ohms load)-6 dBV (0.5 V)
Self Noise
(typical, equivalent SPL, A-weighted)23.5 dB typical
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Weight
Net: 0.207 kg (0.475 lbs)
Connector
Three-pin professional audio (XLR), male
Power Requirements
11 to 52 Vdc phantom (1.2 mA)
Furnished Accessories
A25D Swivel Adapter, 95A2314 Carrying/Storage Bag
(1) Shure BETA 87A Vocal Microphone
(1) Microphone clip
(1) Carry pouch