U891Rx

Cardioid Condenser Boundary Microphone with Switch

MSRP* US$367.00
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


    Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891R cardioid condenser boundary microphone features an activation switch that can be set to three modes: press-on/press-off, press to talk, and press to mute. The phantom-powered microphone is equipped with a unique PivotPoint® rotating output connector and an LED status indicator. UniGuard® innovations offer unsurpassed immunity from radio frequency interference; interchangeable elements are available in cardioid, hypercardioid and omnidirectional polar patterns; an 80 Hz low-cut UniSteep® filter reduces pickup of low-frequency ambient noise. The microphone’s heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone. The unit’s self-contained electronics eliminate 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

    • An activation switch can be set to any of three operating modes: “touch-on/ touch-off,” “touch-to-talk” and “touch-to-mute”

    • 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)

    • 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

    • Improved switch design

    • Available in two colors: black (U891Rx) and white (U891RWx)

  • 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 LEVEL130 dB SPL, 1 kHz at 1% T.H.D.
    DYNAMIC RANGE (typical)104 dB, 1 kHz at Max SPL
    SIGNAL-TO-NOISE RATIO68 dB, 1 kHz at 1 Pa
    PHANTOM POWER REQUIREMENTS11-52V DC, 4 mA typical
    SWITCHESActivation: on/off;
    Switch function: press on/off,
    momentary on, momentary off;
    Flat, roll-off
    WEIGHT264 g (9.3 oz)
    DIMENSIONS108.0 mm (4.25") maximum length,
    84.0 mm (3.31") maximum width,
    23.0 mm (0.91") maximum height
    OUTPUT CONNECTORTB3M-type
    CABLE7.6 m (25.0') long, 3.2 mm (0.13")
    diameter, 2-conductor, shielded cable with
    TA3F-type and XLRM-type connectors
    OPTIONAL INTERCHANGEABLE ELEMENTSUE-O omnidirectional (360°)
    UE-H hypercardioid (100°)
    ACCESSORY FURNISHEDSoft protective pouch
    Click on the chart to view the larger image
    POLAR PATTERN
    POLAR PATTERN
    FREQUENCY RESPONSE
    FREQUENCY RESPONSE



    Conditions
  • Downloads

    U891Rx & U891RWx Submittal Sheet (pdf 340.14 KB)
    U891Rx & U891RWx Specification Sheet (pdf 429.21 KB)
    Optional Windscreens / Mounts
  • Reviews

  • Q & A

    Do you have questions about this product?

    Get answers from real customers and in-house experts with AnswerBox.

    2 Questions | 2 Answers
    Displaying questions 1-2
    • Q:

      i own a Audio Technica AT871R Cardioid Condenser Boundary Microphone i cant find it on this web sight, but the mic will not pick up any sound at all? how to i set it up?
      Asked on 4/13/2016 by KillSwitch102 from naknek alaska

      1 answer

      • Staff Reviewer

        A:

        There are a couple of possible reasons. This is a condenser microphone and therefore requires Phantom Power in order to operate. Phantom Power is an external source of power used for all condenser microphones. If you are using Phantom Power and it is still not working, that would be a Service issue and would need to come in to get fixed. You can find information on sending products in for Service (in the US) at www.audio-technica.com/service

        Answered on 4/14/2016 by ATUS_Specialist4
    • Q:

      does the mic default to mute when power is applied?

      When i kill the phantom power i would like all mics to default to muted when power is applied again.
      Asked on 12/2/2013 by Arnie from New York, NY, USA

      1 answer

      • A:

        Thank you for your inquiry. The microphone is OFF when powered up (if phantom power has been off for at least 15 seconds) when in the Touch ON/OFF mode.

        The microphone is ON when powered up when in the Momentary OFF mode.

        The microphone is OFF when powered up in the Momentary ON mode.

        Answered on 12/3/2013 by AudioSolutionsManager from Stow, OH
    Displaying questions 1-2

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