Shure Beta 91A Boundary Microphone

Shure Beta 91A Boundary Microphone

Shure Beta 91A Boundary Microphone

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Product Highlights

  • Wide Frequency Response
  • Low-Profile Design
  • Cardioid Polar Pattern
  • Interchangeable Cartridge
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Shure Beta 91A overview

  • 1Description

The Shure Beta 91A is a boundary microphone that can double as a kick drum mic, as it can capture the punch and attack of low-frequency instruments such as kick (bass) drums. It features a wide frequency response well suited for capturing a variety of audio signals such as organ and piano. The flat, boundary design also aides in producing a strong, solid low-end response, as well as make it easy to mount inside of a bass drum. The Beta 91A is ideal for both recording and sound reinforcement alike.

Uniform half-cardioid polar pattern for maximum gain-before-feedback and rejection of off-axis sound
Low-profile design features integrated preamplifier and XLR connector to facilitate setup efficiency while minimizing stage clutter
Frequency response tailored for kick drum/low frequency applications with a wide dynamic range for use in high SPL environments
Two-position contour switch to maximize attack and clarity depending on application: select the flat response setting for natural sound in most applications or the Low-Mid Scoop setting for a strong low frequency punch with plenty of higher frequency attack
Furnished with zipper pouch
UPC: 042406187176
In the Box
Shure Beta 91A Boundary Microphone
  • Zippered Carrying Bag
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Shure Beta 91A specs

    Transducer Condenser (electret bias)
    Polar Pattern Half-cardioid
    Frequency Response 20 to 20,000 Hz
    Output Impedance 146 Ohms
    Sensitivity -48.5 dBV/Pa (3.8 mV)
    Maximum SPL 2500-Ohm load: 155 dB (1 kHz at 1% THD)
    1000-Ohm load: 151 dB (1 kHz at 1% THD)
    Maximum Input Sound Level 20 Hz to 20 kHz, less than 1% THD
    Signal-to-Noise Ratio 64.5 dB
    Dynamic Range 2500-Ohm load: 125.5 dB (1 kHz at 1% THD)
    1000-Ohm load: 121.5 dB (1 kHz at 1% THD)
    Clipping Level 2500-Ohm load: 12.5 dBV
    1000-Ohm load: 7.5 dBV
    Self Noise (Equivalent SPL) 29.5 dB SPL (A-weighted)
    Common Mode Rejection ≥55 dB (20 Hz to 200 kHz)
    Switch Frequency Contour Switch: 7 dB of attenuation centered at 400 kHz
    Power Requirements Phantom Power: 48 VDC +/- 4 Vdc (IEC-268-15/DIN 45 596), positive pins 2 and 3
    Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
    Power Requirements 11 to 52 VDC phantom power, 5.4 mA
    Output Connectors 1 x XLR male, balanced
    Dimensions 3.7 x 5.5 x 0.8" (95.1 x 139.1 x 20.3 mm)
    Weight 16.6 oz (470 g)
    Packaging Info
    Package Weight 1.85 lb
    Box Dimensions (LxWxH) 10.0 x 5.0 x 3.4"

    Shure Beta 91A reviews

    Beta 91A Boundary Microphone is rated 5.0 out of 5 by 2.
    Rated 5 out of 5 by from The best application for pianos Never could get a full rich natural sound until we installed this mic. It is used for live worship. Really allows for clear separation of tones without losing the natural sound of the piano.
    Date published: 2015-02-11
    Rated 5 out of 5 by from Thunder! This mic truly brings the Thunder to your kick performance (lightning not included, LOL)!
    Date published: 2015-02-25
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