Shure Beta 181 Ultra-compact, small-diaphragm side-address condenser microphone

 

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Dale #:SHUR-BETA181C

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  • The Shure Beta 181 is an ultra-compact, small-diaphragm side-address condenser microphone, designed for discrete placement and control in live and studio environments. Featuring interchangeable cardioid, supercardioid, omnidirectional and bidirectional capsule options for superior versatility, the small diaphragm design provides superior audio with consistent, textbook polar responses in a form factor small enough to get close to the source in the tightest conditions.

    Features:
    • Premier live performance microphone with Shure quality, ruggedness, and reliability Compact preamp attaches to four interchangeable capsules
    • Wide dynamic range for use in high SPL environments
    • Side-address form allows for discreet positioning in tight performance and recording settings
    • Innnovative locking ring provides a secure connection between capsule and preamp
    • Hardened steel mesh grille resists denting, wear, and abuse
    • Compact design, under 12 cm (5 in.), reduces stage clutter
    • Furnished with stand adapter and carrying case

    Additional Features:
    • Interchangeable polar pattern capsules attach to a compact preamplifier with integrated XLR connections for the ultimate in low-profile application flexibility (Each Beta 181 ships with one polar pattern capsule and one XLR preamplifier. Capsules available separately for custom flexibility.)
    • Precision-engineered, compact side-address design features innovative locking ring to provide secure connection between capsule and preamplifier
    • Frequency response tailored for wide dynamic range applications for use in high SPL environments
    • Furnished with stand adapter, windscreen and carrying case (carrying case will securely protect up to four polar pattern capsules)
    • Exceptional low-frequency reproduction
    • Extremely high SPL handling
    • High output level
    • No crossover distortion
    • Transformer output
  • Cartridge Type Electret Condenser
    Polar Pattern 181/C: Cardioid
    181/S: Supercardioid
    181/O: Omnidirectional
    181/BI: Bidirectional
    Frequency Response20 to 20,000 Hz
    Output Impedance110 Ω
    Sensitivity
    open circuit voltage, @ 1 kHz, typical
    Cardioid: –46.5 dBV/Pa [1] (2.4 mV)
    Supercardioid: –49.5 dBV/Pa [1] (2.5 mV)
    Omnidirectional: –52.0 dBV/Pa [1] (2.6 mV)
    Bidirectional: –51.0 dBV/Pa [1] (2.6 mV)
    Maximum SPL
    1 kHz at 1% THD[2]
    2500 Ω load: Cardioid: 151.5 dB SPL
    Supercardioid: 154.5 dB SPL
    Omnidirectional: 157.0 dB SPL
    Bidirectional: 156.0 dB SPL

    1000 Ω load: Cardioid: 149.0 dB SPL Supercardioid: 152.0 dB SPL
    Omnidirectional: 154.0 dB SPL
    Bidirectional: 153.5 dB SPL
    Signal-to-Noise Ratio[3] Cardioid: 73.5 dB
    Supercardioid: 71.5 dB
    Omnidirectional: 70.5 dB
    Bidirectional: 71.0 dB
    Dynamic Range2500 Ω load: Cardioid: 131.0 dB Supercardioid: 132.0 dB
    Omnidirectional: 133.5 dB
    Bidirectional: 133.0 dB

    1000 Ω load: Cardioid: 128.5 dB
    Supercardioid: 129.5 dB
    Omnidirectional: 130.5 dB
    Bidirectional: 130.5 dB
    Clipping Level
    @ 1 kHz, 1% THD
    2500 Ω load: 10.5 dBV
    1000 Ω load: 7.5 dBV
    Self Noise
    equivalent SPL, A-weighted, typical
    Cardioid: 20.5 dB SPL-A
    Supercardioid: 22.5 dB SPL-A
    Omnidirectional: 23.5 dB SPL-A
    Bidirectional: 23.0 dB SPL-A
    Common Mode Rejection
    20 to 20,000 kHz
    ≥55 dB
    Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
    Power Requirements11–52 V DC[4] phantom power (IEC-61938)
    2.4 mA, maximum
    Net Weight 145 g (5.1 oz.)
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