Springfield, MO, United States
About this listing
Shure Beta 91A Condenser Boundary Microphone
The Shure Beta 91A is a professional-grade boundary condenser microphone engineered to capture the powerful low-end punch of a kick drum or the deep resonance of a piano. Designed with a sleek, low-profile aesthetic, this microphone sits flat inside a bass drum or on a stage floor, eliminating the need for bulky stands. It features an integrated XLR preamp that simplifies cable management while maintaining a high-quality signal path. At the heart of the Beta 91A is a precision-engineered plate mount capsule with a half-cardioid polar pattern, ensuring excellent gain-before-feedback and superior rejection of unwanted off-axis noise. Whether you are seeking a crisp "click" for metal or a warm "thump" for jazz, the onboard two-position contour switch allows you to toggle between a flat response and a low-mid frequency scoop to perfectly tailor your sound.
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Highlights
Tailored Frequency Response: Specifically voiced for kick drums and low-frequency instruments to provide studio-quality punch and clarity.Integrated Preamp: Features a built-in XLR connector to reduce stage clutter and provide a more reliable, streamlined connection.Two-Position Contour Switch: Includes a toggle to switch between a natural flat response and a "scooped" setting that enhances attack and low-end presence.Half-Cardioid Polar Pattern: Optimized for maximum gain-before-feedback and rejection of background noise, ensuring your source remains the focus.Low-Profile Design: No mounting hardware or stands required; the rugged, weighted construction stays securely in place inside the drum or on the floor.
Specifications
Type: Electret CondenserFrequency Response: 20 Hz to 20,000 HzPolar Pattern: Half-cardioid (cardioid in the hemisphere above the mounting surface)Output Impedance: 146 OhmsSensitivity: –48.5 dBV/Pa (3.8 mV)Maximum SPL: 155 dB (at 2500 Ohm load)Signal-to-Noise Ratio: 64.5 dBDynamic Range: 125.5 dBSelf Noise: 29.5 dB SPL-APower Requirements: 11–52 V DC phantom power, 5.4 mASwitch: Two-position frequency contour switch (Flat or Low-Mid Scoop)Connector: Integrated 3-pin XLR (male)Weight: 16.6 oz (470 g)
Price$269
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