• Audio Technica U851R Condenser Boundary Microphone


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Audio Technica

The Audio Technica U851R Condenser Boundary Microphone is a breakthrough in microphone technology, offering outstanding speech intelligibility and transparent sound quality for surface-mount applications.
The phantom-powered U851R is equipped with a PivotPoint rotating output connector, UniSteep filter and UniGuard RFI-shielding technology. 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.

Audio Technica U851R 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 silicon foam bottom pads minimize coupling of surface vibration to the microphone
  • Low-profile design with low-reflectance finish for minimum visibility

Audio Technica U851R Specifications

  • Element: Fixed-charge back plate, permanently polarized condenser
  • Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
  • Frequency Response: 30-20,000 Hz
  • Low Frequency Roll-Off: 80 Hz, 18 dB/octave
  • Open Circuit Sensitivity: –34 dB (19.9 mV) re 1V at 1 Pa
  • Impedance: 200 ohms
  • Maximum Input Sound Level: 134 dB SPL, 1 kHz at 1% T.H.D.
  • Dynamic Range (typical): 108 dB, 1 kHz at Max SPL
  • Signal-To-Noise Ratio: 68 dB, 1 kHz at 1 Pa
  • Phantom Power Requirements: 11-52V DC, 4 mA typical
  • Switch: Flat, roll-off
  • Weight: 9.2 oz (262 g)
  • Dimensions:
    • 4.25-inches (108.0 mm) long
    • 3.31-inches (84.0 mm) maximum width
    • 0.91-inches (23.0 mm) height
  • Output Connector: TB3M-type
  • Cable:
    • 25-feet (7.6 m) long, 0.13-inches (3.2 mm) diameter
    • 2-conductor, shielded cable with TA3F and XLRM-type connectors
  • Accessory Furnished: Soft protective pouch



 
 

 

 
 
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