Cardioid Condenser Boundary Microphone with Local or Remote Switching

U891RCx

Overview
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Features
Specifications
Reviews

Overview

U891RCx

Designed for surface-mount applications such as high-quality sound reinforcement, conferencing, distance learning 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”
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
Improved switch design

Features

This product has been discontinued. Please see the U891RCb. A wide range condenser microphone with a cardioid polar pattern, the U891RCx 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 activation 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.

Specifications

Microphones
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
Maximum Input Sound Level	130 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range	104 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	Activation: on/off; Switch function: press on/off, momentary on, momentary off; Control: local, remote, LED remote; Flat, roll-off
Weight	266 g
Cable	7.6 m (25.0') long, 3.2 mm (0.13") 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
Dimensions	108.0 mm (4.25") maximum length, 84.0 mm (3.31") maximum width, 23.0 mm (0.91") maximum height
Output Connector	TB5M-type
Accessories Included	Soft protective pouch

Reviews

Downloads

U891RCx Declaration of Conformity

U891RCx Polar Pattern

U891RCx Frequency Response

U891RCx Specification Sheet