U891RC (DISCONTINUED)

Cardioid Condenser Boundary Microphone with Local or Remote Switching

MSRP* US$360.00

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



  • Overview
  • Features
  • Specifications
  • Downloads

  • Overview


    The U891RC has been updated. Click here for more information on the newest model.

    A wide range condenser microphone with a cardioid polar pattern, the ultra-smart U891RC is equipped with local or remote switching options. For flexible control in conference and boardroom installations, the unit’s external contact closure ability allows a user to trigger an external device—a camera, for instance—from a switch on the microphone. Another ease-of-use feature: the microphone’s electronic on-off switch can be set to three operating modes: touch-on/touch-off, press to talk, and press to mute. The mic is also equipped an 80 Hz low-cut UniSteep® filter to reduce pickup of low-frequency ambient noise. Its red LED status indicator can be controlled remotely. UniGuard® innovations offer unsurpassed immunity from radio frequency interference; interchangeable elements are available in cardioid, hypercardioid and omnidirectional polar patterns; a unique rotating PivotPoint® connector changes the cable exit point—no tools required. It requires 11 to 52V DC phantom power, which operates the microphone and switch circuitry.
  • Features


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

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

    • External contact closure capability permits control of remote devices from microphone switch

    • External LED control allows for accurate depiction of the live status of the microphone

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

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

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

    • 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 black finish for minimum visibility

  • 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
    SWITCHESTouch-sensitive control: on/off;
    Switch function: touch on/off, momentary on, momentary off;
    Control: local, remote, LED remote;
    Flat, roll-off
    WEIGHT9.4 oz (266 g)
    DIMENSIONS4.25" (108.0 mm) long,
    3.31" (84.0 mm) maximum width,
    0.91" (23.0 mm) height
    OUTPUT CONNECTORTB5M-type
    CABLE25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 5-conductor shielded cable (2 conductors under shield; 3 control wires outside shield); TA5F-type connector at microphone end, output end stripped and tinned for connection to electronic device
    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)
    U891RC Specification Sheet (pdf 328.16 KB)
    U891RC Submittal Sheet (pdf 639.96 KB)
    Optional Windscreens / Mounts