Shure BETA 27 Supercardioid Side-Address Condenser Instrument Microphone


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Dale #:SHUR-BETA27

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  • The Beta 27 side-address condenser microphone is precision engineered for professional sound reinforcement and project studio recording applications. Its flat frequency response and low self-noise provide unerring performance in demanding environments. A tight supercardioid pattern ensures high gain-before-feedback and maximum isolation from other sound sources.


    • Supercardioid polar pattern specifically targets the sound source consistently with greatly minimized bleed from off-axis sound sources
    • Tailored for superior transient response from a low-mass, 1” externally-biased, ultra-thin 24 Karat gold-layered Mylar® diaphragm
    • Flat, neutral frequency response for natural reproduction on stage or in the studio
    • 3-position switchable low-frequency filter helps reduce unwanted background noise or counteract proximity effect for consistent, extended lowend
    • -15 dB switchable attenuator handles extremely high SPLs with ease
    • Premium electronic components and gold-plated internal and external connectors
    • Internal pop filter with three separate mesh layers reduces wind and breath noise.
  • TypeCondenser (externally biased)
    Frequency Response20 to 20,000 Hz
    Polar PatternSupercardioid
    Impedance160 Ohms
    Sensitivity (at 1 kHz, open circuit voltage)-37 dBV/Pa ; 1 Pascal=94 dB SPL
    Maximum SPL (1 kHz at 1% THD) 
    1000 Ohm load134 dB (148 dB, Pad on)
    2500 Ohm load140 dB (154 dB, Pad on)
    Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)85.5 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 load125.5 dB
    2500 Ohm load131.5 dB
    Common Mode Rejection (20 Hz to 20 kHz)> 50 dB
    Clipping Level (20Hz-20 kHz at 1% THD) 
    1000 Ohm load2.0 dBV
    2500 Ohm load8.5 dBV ;THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL
    Self Noise (typical, equivalent SPL, A-weighted)8.5 dB
    PolarityPositive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
    Net428 g (15.1 oz.)
    Attenuator-15 dB
    Low Frequency Responseflat; -6 dB/octave below 115 Hz; -18 dB/octave below 80 Hz
    ConnectorThree-pin professional audio (XLR), male
    Power Requirements48 Vdc phantom, 5.6 mA
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