Audio-Technica U851RO Unipoint Omnidirectional Condenser Boundary Microphone

ITEM #: U851RO MFG #: U851RO

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U851RO - Overview

Featuring breakthrough audio and mechanical design innovations, the phantom-powered Audio-Technica U851RO offers outstanding speech intelligibility and transparent sound quality for surface-mount applications. The omnidirectional microphone is equipped with a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. It accepts interchangeable condenser elements in cardioid and hypercardioid polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851RO is equipped with self-contained electronics, eliminating 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
    • Low-profile element provides uniform omnidirectional polar pattern with 360° acceptance angle
    • PivotPoint° rotating output connector allows cable to exit from either the rear or the bottom of the microphone
    • UniGuard° RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
    • UniSteep° filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality
    • 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
     
  • Specifications:

    • Element: Fixed-charge back plate, permanently polarized condenser
    • Polar Pattern: Omnidirectional in hemisphere above mounting surface
    • Frequency Response: 30 - 20,000Hz
    • Low Frequency Roll-Off: 80Hz, 18dB/octave
    • Open Circuit Sensitivity: -31dB (28.2mV) re 1V @ 1Pa
    • Impedance: 200Ω
    • Maximum Input Sound Level: 132dB SPL, 1kHz @ 1% T.H.D.
    • Dynamic Range (typical): 111dB, 1kHz @ Max SPL
    • Signal-To-Noise Ratio: 73dB, 1kHz @ 1Pa
    • Phantom Power Requirements: 11 - 52V DC, 4mA typical
    • Switch: Flat, roll-off
    • Weight: 9.2oz
    • 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-C cardioid (120°); UE-H hypercardioid (100°)
     
  • Item Includes:

    • Soft Pouch Carry Case
     
  • Warranty:

    • 2 Year Limited End-User
     
  • GTIN:

    0042005170180
     

U851RO - Required Accessories

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