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    Shure Beta 91A Condenser Half-Cardioid Boundary Mic

    The Shure Beta 91A is the perfect microphone to capture mallet instruments and ambient room sounds.
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    Web Item #SHUBETA91A

    Shure Beta 91A Boundary Microphone
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    Manuals and Documents: Manual Specifications Sheet
    Shure Warranty: If you have additional warranty questions, please call the manufacturer at 800-25-SHURE
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    This product ships to: Can ship to United States

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    Shure Beta 91A Half-Cardioid Boundary Condenser Microphone Product Description

    The Shure Beta 91A is designed for use with kick drums, as well as other traditional low-frequency applications including piano. Featuring an updated microphone capsule, integrated preamplifier, and XLR connection, the Shure 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).

    Features

    - 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: 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
    - Requires no external mounting or accessories for ease of use and storage
    - Furnished with zipper pouch

    Same Day Music is an authorized dealer of Shure products.

    Shure Beta 91A Half-Cardioid Boundary Condenser Microphone Technical Description

    Type: Electret Condenser

    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: 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

    Same Day Music is an authorized dealer of Shure products.
    Shipping Weights and Dimensions
    Shipping Weight: 2 lbs
    Shipping Dimensions: 10 x 5 x 3 in

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