U851R
Cardioid Condenser Boundary Microphone

U851R

U851R
  • Overview
  • Gallery
  • Features
  • Specifications
  • Reviews

Overview

U851R

Cardioid Condenser Boundary Microphone

Features

Featuring breakthrough audio and mechanical design innovations, the phantom-powered U851R offers outstanding speech intelligibility and transparent sound quality for surface-mount applications. The microphone is equipped with a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. It accepts interchangeable condenser elements available for boundary microphones in cardioid, hypercardioid and omnidirectional polar patterns. 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.

  • 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 black finish for minimum visibility
  • Available in two colors: black (U851R) and white (U851RW)

Specifications

Microphones
Element 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
Maximum Input Sound Level 134 dB, 1 kHz at 1% T.H.D.
Dynamic Range 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
Switches Flat, roll-off
Weight 9.2 oz (262 g)
Cable 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors
Dimensions 4.25" (108.0 mm) long, 3.31" (84.0 mm) maximum width, 0.91" (23.0 mm) height
Output Connector TB3M-type
Accessories Included Soft protective pouch

Reviews

Downloads

U851R Declaration of Conformity
U851R Frequency Response
U851R Polar Pattern
U851R Submittal Sheet
U851R Specification Sheet