Shure (BETA 91A) Kick Drum Microphone (Grey)

Half-cardioid, With zipper pouch

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What's in the box:

  • Shure Beta 91A Boundary Microphone
  • Zippered Carrying Bag
  • Limited 1-Year Warranty

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High SPL Instrument Mic

The Shure Beta 91A Kick Drum Mic is great for use with kick drums and pianos. Featuring an updated microphone capsule, integrated preamplifier, and XLR connection, Beta 91A offers a strong low-frequency response and is specifically tailored for bass frequency applications. The Shure Beta 91A combines superior attack and punch for studio-quality sound, even at extremely high sound pressure levels (SPL).


  • Uniform half-cardioid polar pattern for maximum gain-before-feedback and rejection of off-axis sound
  • Precision-engineered low-profile design features integrated preamplifier and XLR connector to maximize 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
  • Requires no external mounting or accessories for ease of use and storage
  • Furnished with zipper pouch

Specifications for the Shure (BETA 91A) Kick Drum Microphone

{ "Frequency Response:" : "20 to 20,000 Hz ", "Polar Pattern:" : "Half-cardioid (cardioid in hemisphere above mounting surface) ", "Impedance:" : "146 Ohms ", "Sensitivity (at 1 kHz, open circuit voltage)" : [ "-48.5 dBV/Pa (3.8mV)", "1 Pascal=94 dB SPL" ], "Maximum SPL (1 kHz at 1% THD):" : "1000 Ohm load: 151 dB, 2500 Ohm load: 155 dB ", "Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)" : [ "64 dB ", "S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted " ], "Dynamic Range (at 1 kHz)" : [ "1000 Ohm load: 121.5 dB ", "2500 Ohm load: 125.5 dB " ], "Common Mode Rejection (20 Hz to 20 kHz):" : " 55 dB ", "Clipping Level (20Hz-20 kHz at 1% THD)" : [ "1000 Ohm load: 7.50 dBV, 2500 Ohm load: 12.5 dBV", "THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL " ], "Self Noise (typical, equivalent SPL, A-weighted):" : "29.5 dB SPL-A ", "Polarity:" : "Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 ", "Weight:" : "Net: 470 g (16.6 oz.)", "Frequency Contour Switch:" : "7 dB of attenuation centered at 400 kHz ", "Connector:" : "Three-pin professional audio (XLR), male, balanced ", "Power Requirements:" : "11-52 Vdc phantom power, 5.6 mA " }

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