U891RCx

Cardioid Condenser Boundary Microphone with Local or Remote Switching

$495 + shipping (includes gst)


A wide range condenser microphone with a cardioid polar pattern, the ultra-smart 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 electronic on-off 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.

Designed for surface-mount applications such as high-quality sound reinforcement, conferencing, distance learning and other demanding sound pickup situations
Ultra-quiet electronic 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 silicon foam bottom pads minimize coupling of surface vibration to the microphone
Low-profile design with low-reflectance black finish for minimum visibility
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

130 dB SPL, 1 kHz at 1% T.H.D.

Dynamic Range (Typical)

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 (9.4 oz)

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

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 electronic device

Optional Interchangeable Elements

UE-O omnidirectional (360°) 
UE-H hypercardioid (100°)

Accessories Furnished

Soft protective pouch

Polar Pattern
Frequency Response
U891Rx Spec Sheet (PDF) Download
U891Rx Submittal Sheet (PDF) Download

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