Shure Beta 91A.png
Shure Beta 91A.png

Shure Beta 91A Half-cardioid Kick Drum Microphone

$269.00

Half-cardioid Kick Drum Microphone with 2-position Contour Switch, Integrated Preamp, and XLR Connector

Half-cardioid Kick Drum Microphone with 2-position Contour Switch, Integrated Preamp, and XLR Connector

Key Specifications

  • Type: Electret condenser boundary microphone

  • Polar Pattern: Uniform half-cardioid (cardioid in the hemisphere above the mounting surface)

  • Frequency Response: 20 Hz to 20,000 Hz

  • Output Impedance: 146 Ω (rated at 150 Ω)

  • Sensitivity (at 1 kHz, open circuit voltage): -48.5 dBV/Pa (3.8 mV)

  • Maximum SPL (1 kHz at 1% THD): 151 dB (1000 Ω load) / 155 dB (2500 Ω load)

  • Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz): 64 dB (A-weighted)

  • Dynamic Range: 121.5 dB (1000 Ω load) / 125.5 dB (2500 Ω load)

  • Power Requirements: 11–52 V DC phantom power (5.4 mA – 5.6 mA; 48 V DC optimal)

  • Connector: Integrated 3-pin professional audio (XLR)

  • Dimensions & Weight: 139.1 mm x 95.11 mm x 20.3 mm; 470 g