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Shure Beta 87a

Premium Supercardioid Handheld Electret Condenser for Vocal Applications

Product Code 1897

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The Beta 87A features a controlled low-frequency roll-off that compensates for proximity effect and prevents the "boomy" sound often associated with close pick-up. The characteristic Shure presence rise brightens the upper midrange. The tight supercardioid pattern, with null points at approximately 125 degrees, provides maximum isolation from other vocalists or instruments while offering minimal off-axis coloration. The BETA 87A operates on phantom power. Features: Smooth frequency response with gradual presence rise, Highly consistent supercardioid polar pattern provides superior gain-before-feedback, Electronic low-frequency roll-off compensates for proximity effect, Wide dynamic range (117 dB) and low distortion characteristics, Very low susceptibility to RFI and electromagnetic hum, Advanced cartridge shock-mount system absorbs mechanical shocks and reduces handling noise, Built-in pop filter reduces undesirable wind and breath sounds, Reliability for years of trouble-free performance.

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UPC: 042406054744

Cartridge Type
Condenser (electret bias)
Frequency Response
50 to 20,000 Hz
Polar Pattern
Output Impedance
Rated at 150 ohms (100 ohms actual plus or minus 20%)
Recommended minimum load impedance: 800 ohms
Sensitivity (at 1,000 Hz)
Open Circuit Voltage . . . . . -54 dBV/Pa (2 mV)
(1 Pa = 94 dB SPL)
Clipping Level (at 1,000 Hz)
1000 ohm Load . . . . . -6 dBV (0.5 V)
Maximum SPL (at 1,000 Hz)
142 dB (0.25% THD, 1000 ohm load)
Self-Noise (equivalent sound pressure level; measured with true rms voltmeter)
25 dB typical, A-weighted
27 dB typical, weighted per DIN 45 405
Dynamic Range
117 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio
69 dB at 94 dB SPL (IEC 651)*
*S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.
Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Phantom Supply Requirement . . . . 11 to 52 Vdc, positive at both pins 2 and 3
Current Drain . . . . . 1.0 to 1.2 mA
Three–pin (XLR) professional audio
Aluminum construction with blue metallic finish, and hardened steel grille with nickel satin chrome plating
See Figure 4
Net Weight
200 grams (7 oz)

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