Audio-Technica U891Rx Cardioid Condenser Boundary Microphone with Switch

ITEM #: U891R MFG #: U891R

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U891R - Overview

Designed to deliver easy, flexible control in conference and boardroom installations, the versatile Audio-Technica U891R cardioid condenser boundary microphone features a touch-sensitive on-off 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.

Did You Know?
While boundary mics are widely utilized in conference rooms and training applications many audio engineers use them as drum recording mics. It's true! Musicians and audio engineers can benefit from a pair of boundary mics by placing them on the floor on both sides of a kick drum, on the walls or even inside the kick drum. Have fun experimenting to find your killer drum sound.

  • 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:

    • Element: Fixed-charge back plate, permanently polarized condenser
    • Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
    • Frequency Response: 30 - 20,000Hz
    • Low Frequency Roll-Off: 80Hz, 18dB/octave
    • Open Circuit Sensitivity: -34dB (19.9mV) re 1V @ 1Pa
    • Impedance: 200Ω
    • Maximum Input Sound Level: 130dB SPL, 1kHz @ 1% T.H.D.
    • Dynamic Range (typical): 104dB, 1kHz @ Max SPL
    • Signal-To-Noise Ratio: 68dB, 1kHz at 1Pa
    • Phantom Power Requirements: 11 - 52V DC, 4mA typical
    • Switches: Activation: on/off; Switch function: press on/off, momentary on, momentary off; Flat, roll-off
    • Weight: 9.3oz
    • Dimensions: 4.25" maximum length, 3.31" maximum width, 0.91" maximum height
    • Output Connector: TB3M-type
    • Cable: 25.0ft long, 0.13" diameter, 2-conductor, shielded cable with TA3F-type and XLRM-type connectors
    • Optional Interchangeable Elements: UE-O omnidirectional (360°), UE-H hypercardioid (100°)
     
  • Item Includes:

    • Soft protective pouch
     
  • Warranty:

    • 2 Year Limited End-User
     
  • GTIN:

    0042005165865
     

U891R - Required Accessories

    California Residents:
    WARNING:
    Cancer and Reproductive Harm - www.P65Warnings.ca.gov