Shure
Vocal Microphone SM87A
Supercardioid Condenser
Description
Uniform supercardioid pick-up pattern for maximum gain before feedback and superior rejection of off-axis sound
Smooth, wide frequency response with gradual presence rise and controlled proximity effect tailored for vocals
Steel mesh grille and satin finished aluminum construction resist wear and abuse
Very low susceptibility to RF and electromagnetic hum
Minimally affected be varying load impedances
Phantom powered
Performs over a wide range of temperature and humidity conditions
Cartridge shock mount system absorbs mechanical shock and minimizes handling noise
Built-in pop filter reduces undesirable wind and breath noise
Shure quality, ruggedness, and reliability
Specifications
Type: Electret Condenser
Frequency Response: 50 to 20,000 Hz
Polar Pattern: Supercardioid
Output Impedance: EIA rated at 150 Ω (100 Ωactual)
Sensitivity at (1 kHz, open circuit voltage): -52 dBV/Pa (2.4 mV)[1]
Maximum SPL (1 kHz at 1% THD, 1 kΩ load): 140 dB
Signal-To-Noise Ratio(Ref. 94 dB SPL at 1 kHz): 70 dB[2]
Dynamic Range (at 1 kHz, 1 kΩ load): 116.5 dB
Clipping Level (1 kHz at 0.25% THD, 1 kΩ load): -6 dBV (0.5 V)
Self Noise typical, equivalent SPL, A-weighted: 24 dB
Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Net Weight: 0.20 kg (0.44 lbs)
Connector: Three-pin professional audio (XLR), male
Housing: Aluminum construction with steel grille and satin black finish
Power Requirements: 11 to 52 V DC (1.2 mA) phantom power
[1] 1 Pa=94 dB SPL
[2] S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted