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Cardioid Cond. Adapter-mount Gooseneck Mic.

U857A
  • Designed for high-quality sound reinforcement, professional recording and broadcasting
  • Superior off-axis rejection for maximum gain before feedback
  • UniGuard™ RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
  • Easy-to-adjust, rugged, small-diameter, alternating gooseneck with virtually no "memory" permits quick positioning into desired shape
  • UniSteep® filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality
  • Accepts interchangeable elements to permit angle of acceptance from 90° to 360°
  • Two-stage foam windscreen yields dramatically improved resistance to P-pops and other breath blasts
  • Direct mounts to any 5/8"-27 stand, or to included threaded mounting flange
  • Operates on battery or phantom power

    Engineered for versatile positioning and extremely flexible performance in boardroom, school, government, house-of-worship and other installed applications, the U857AL features a small-diameter gooseneck with virtually no "memory". Its ultra-flexible, robust design permits easy adjustment into desired shape while resisting inadvertent repositioning. This cardioid condenser gooseneck microphone direct mounts to any 5/8"-27 stand; it is 16.58" long. Equipped with UniGuard™ innovations that offer unsurpassed immunity from radio frequency interference, the U857AL accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine™ line cardioid polar patterns. The battery- or phantom-powered microphone also offers an 80 Hz low-cut UniSteep® filter that reduces pickup of low-frequency ambient noise.

  • U857A Specifications

    Element

    Fixed-charge back plate, permanently polarized condenser

    Polar Pattern

    Cardioid

    Frequency Response

    30 ~ 20,000 Hz

    Low Frequency Roll-Off

    80 Hz, 18 dB/octave

    Open Circuit Sensitivity

    Phantom: -42 dB (7.9 mV) re 1V at 1 Pa Battery: -43 dB (7.0 mV) re 1V at 1 Pa

    Impedance

    Phantom: 200 Ω
    Battery: 270 Ω

    Maximum Input Sound Level

    Phantom: 133 dB SPL, 1 kHz at 1% T.H.D. Battery: 123 dB SPL, 1 kHz at 1% T.H.D.

    Dynamic Range (Typical)

    Phantom: 109 dB, 1 kHz at Max SPL Battery: 99 dB, 1 kHz at Max SPL

    Signal-To-Noise Ratio

    70 dB, 1 kHz at 1 Pa

    Phantom Power

    11-52V DC, 2 mA typical

    Battery Type

    1.5V AA/UM3

    Battery Current / Life

    0.4 mA / 1200 hours typical (alkaline)

    Switch

    Off, on-flat, on-roll-off

    Weight

    Microphone: 124 g;
    Power Module: 139 g

    Dimensions

    Microphone: 305.0mm X 12.2mm (long X Head Diameter) Power Module: 84.0mm X 63.0mm X 22.0mm (H X W X D)

    Output Connector

    Integral 3-pin XLRM-type

    Angle

    120°

    Accessories Furnished

    AT8531 power module, AT8153 two-stage foam windscreen, battery

    Download

    audio technica support 89_1_U857A_OM.pdf - Operation Manual