Shure Beta 87A Specification Sheet

Product Speciﬁcations

Beta® 87A Supercardioid Condenser Vocal Microphone

Overview

The Shure Beta 87A is a precision-engineered supercardioid condenser vocal microphone with an exceptionally smooth frequency response. Built to withstand extreme sound pressure levels, the Beta 87A is ideal for professional sound reinforcement and studio recording applications - and constructed to withstand the rigors of touring.

Features

• Premier live performance microphone with Shure quality, ruggedness, and reliability

• 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

• Advanced cartridge shock mount system absorbs mechanical shock and minimizes handling noise

• Dent-resistant steel mesh grille and enamel coated metal alloy construction resist wear and abuse

• Effective built-in pop filter reduces undesirable wind and breath noise

• Very low susceptibility to RF and electromagnetic hum

Available Models

Beta 87A Supercardioid Condenser Vocal Microphone

Specifications

Cartridge Type Electret Condenser

Frequency Response 20 to 20,000 Hz

Polar Pattern Supercardioid

Output Impedance 150 Ω

Sensitivity

(at 1kHz, open circuit voltage)

Maximum SPL

(1 kHz at 1% THD, 1kΩ load)

Signal-to-Noise Ratio

(referenced at 94 dB SPL at 1 kHz)

Dynamic Range

(at 1 kHz, 1 kΩ load)

Clipping Level

(1 kHz at 0.25% THD, 1kΩ load)

Self Noise

(typical, equivalent SPL, A-weighted)

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)

−52.5 dBV/Pa (2 mV)

1 Pascal=94 dB SPL

140.5 dB

70.5 dB

S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted

117 dB

−6 dBV (0.5 V)

23.5 dB typical

Accessories and Replacement Parts

RK312 Replacement grille R193 Replacement cartridge

A85WS Microphone windscreen A25D Microphone clip

Polar Pattern

250 Hz 500 Hz 1000 Hz

2500 Hz 6300 Hz 10000 Hz

Frequency Response

+20

+10

–10

–20

20 50 100 1000 10000 20000

Beta 87A

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