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U851R

Cardioid Condenser Boundary Microphone


U.S. Two-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.



  • Overview
  • Features
  • Specifications
  • Downloads
  • Reviews
  • Q & A

  • Overview


    Featuring breakthrough audio and mechanical design innovations, the phantom-powered U851R offers outstanding speech intelligibility and transparent sound quality for surface-mount applications. The microphone is equipped with a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. It accepts interchangeable condenser elements—available for boundary microphones in cardioid, hypercardioid and omnidirectional polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851R is equipped with self-contained electronics, eliminating the need for an external power module.
  • Features


    • Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations

    • PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone

    • Superior off-axis rejection for maximum gain before feedback

    • UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)

    • Self-contained electronics eliminate need for external power module

    • Small-diameter UniPoint® capsule near boundary eliminates phase distortion and delivers clear, high-output performance

    • Heavy die-cast case and non-slip silicone foam bottom pads minimize coupling of surface vibration to the microphone

    • Low-profile design with low-reflectance finish for minimum visibility

    • Available in two colors: black (U851R) and white (U851RW)

  • Specifications

    ELEMENTFixed-charge back plate, permanently polarized condenser
    POLAR PATTERNHalf-cardioid
    (cardioid in hemisphere above mounting surface)
    FREQUENCY RESPONSE30-20,000 Hz
    LOW FREQUENCY ROLL-OFF80 Hz, 18 dB/octave
    OPEN CIRCUIT SENSITIVITY–34 dB (19.9 mV) re 1V at 1 Pa
    IMPEDANCE200 ohms
    MAXIMUM INPUT SOUND LEVEL134 dB SPL, 1 kHz at 1% T.H.D.
    DYNAMIC RANGE (typical)108 dB, 1 kHz at Max SPL
    SIGNAL-TO-NOISE RATIO68 dB, 1 kHz at 1 Pa
    PHANTOM POWER REQUIREMENTS11-52V DC, 4 mA typical
    SWITCHFlat, roll-off
    WEIGHT9.2 oz (262 g)
    DIMENSIONS4.25" (108.0 mm) long,
    3.31" (84.0 mm) maximum width,
    0.91" (23.0 mm) height
    OUTPUT CONNECTORTB3M-type
    CABLE25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors
    OPTIONAL INTERCHANGEABLE ELEMENTSUE-H hypercardioid (100°);
    UE-O omnidirectional (360°)
    ACCESSORY FURNISHEDSoft protective pouch
    Click on the chart to view the larger image
    POLAR PATTERN
    POLAR PATTERN
    FREQUENCY RESPONSE
    FREQUENCY RESPONSE



    Conditions
  • Downloads

    UniPoint Review - Sound & Video Contractor (pdf 128.21 KB)
    UniPoint Review - Pro Audio Review (pdf 238.70 KB)
    U851R, U851RW Specification Sheet (pdf 324.57 KB)
    U851R & U851RW Submittal Sheet (pdf 471.48 KB)
  • Reviews

  • Q & A

    Hello, I need to order 33 of these. Can I do this online? http://www.audio-technica.com/cms/wired_mics/27615e9cf77c6e2b/index.html I do not see the add to cart button

    Michelle

    Thank you for you inquiry. Please contact our Audio Solutions team at 330-686-2600 ext. 5000 they will be happy to help with this.

    AudioSolutionsManager

    What is the pickup range of this microphone? Would one be efficient for a 7'x3' table in say a courtroom?

    Shawn

    Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at audio-solutions@atus.com for assistance with this. http://blog.audio-technica.com/audio-solutions-question-week-far-away-will-microphone-pick-sound/

    ATUS_Specialist3

    What is the cable called that connects to this device? The audio technica U851r Can't seem to find it

    Elias

    TB3M-type is the output. It terminates in an XLR connection

    ATUS_Specialist4

    Can this be used to mike a piano?

    David

    Yes, boundary microphones such as the U851R are often attached inside of the piano lid for piano pickup.

    ATUS_Specialist3

    New Cable? I would like a new cable for this microphone

    tatsound562

    You may obtain a replacement through our Parts Department at Parts@atus.com

    AudioSolutionsSpec3

    What is the cable end on the non microphone end? XLR or XLRM? What is the cable end on the non microphone end? XLR or XLRM?

    Bayareaboy

    XLRM (male)

    AudioSolutionsSpec1

    The included cable terminates to an XLRM end. XLRM represents the "male" end of an XLR connector

    AudioSolutionsSpec3

    Does this mic come with any mounts or how is it placed for best sound quality.

    Viper

    Thank you for your inquiry. There are no mounts. It is designed to sit on a hard surface boundary such as a table top. The microphone does have two key holes on the underside that will allow the microphone to be screwed down for permanent placement on a table top or even a wall.

    AudioSolutionsManager

    Is the cord included in original packaging? For U851R Cardioid Condenser Boundary Microphone.

    Toma

    Thank you for your inquiry. Yes, it includes a 25' cable.

    AudioSolutionsManager