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User Manual

CARDIOID CONDENSER BOUNDARY MICROPHONE

U891Rb/U891RWb

Introduction

Thank you for purchasing this product. Before using the product, read through the

user manual to ensure that you will use the product correctly.

Please keep this manual for future reference.

Features

•Cardioid condenser boundary microphone with switch

•Designed for surface-mount applications such as high-quality sound

reinforcement, professional recording, television, conferencing and other

demanding sound pickup situations

•The capacitive touch switch can be set to any of three operating modes:

“touch-on/touch-off”, “touch-to-talk” and “touch-to-mute”

•Integral, phantom-powered, two-state RGB LED indicator displays on/off status

of microphone

•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)

•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

•Threaded inserts on bottom of microphone allow it to be mounted with screws

for increased security

•Available in two colors: black (U891Rb) and white (U891RWb)

Connection procedure

Connect the output terminals of the microphone to a device that has a

microphone input (balanced input) compatible with a phantom power supply.

The output connector is an XLRM-type with polarity as shown in the figure below.

1 2

3

PIN1 (ground)

PIN3 (cold)

Output terminals

PIN2 (hot)

This product requires

phantom power.

Specifications

Element

Fixed-charge back plate, permanently polarized condenser

Polar patternCardioid

Frequency response20 - 20,000 Hz

Low frequency roll-o80 Hz, 18 dB/octave

Open circuit sensitivity-34 dB (19.9 mV) (0dB=1V/Pa, 1kHz)

Impedance 50 ohms

Maximum input sound level 130 dB SPL (1kHz at 1% THD)

Noise 26 dB SPL (A-weighted)

Dynamic range104 dB (1kHz at Max SPL)

Signal-to-noise ratio68 dB (1kHz at 1Pa, A-weighted)

Phantom power requirements11 - 52 V DC, 9.3 mA

Switches Low cut: on/off; Switch function: touch on/off,

momentary on, momentary off

Weight 253 g (8.9 oz)

Dimensions 23 mm (0.91") × 83.9 mm (3.3") × 108 mm (4.25")

(H×W×D)

Output connectorTB3M-type (Microphone)

3-pin XLRM-type (Cable)

Optional interchangeable elementsUE-O omnidirectional (360°), UE-H hypercardioid (100°)

Included accessories

U891Rb: 7.6 m (24.9') Microphone black cable (TA3F,

XLRM), Pouch

U891RWb: 7.6 m (24.9') Microphone white cable (TA3F,

XLRM), Pouch

•1 Pascal = 10 dynes/cm

2 = 10 microbars = 94 dB SPL

For product improvement, the product is subject to modification without notice.

Polar pattern

240˚

180˚

210˚

270˚

300˚

330˚

0˚

150˚

120˚

90˚

30˚

60˚

LEGEND

200Hz

1kHz

5kHz

8kHz

SCALE IS 5 DECIBELS PER DIVISION

Frequency response

10 dB

50100 2005001k2k5k10k 20k20

Frequency in Hertz

LEGEND

0°, 50 cm

0°, 50 cm, Low cut

Dimensions

50.2

50

83.9

108

23

57

2-M3 P=0.5

(Unit: mm)

Included accessories

Audio-Technica Corporation

2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan

©2019 Audio-Technica Corporation

Global Support Contact: www.at-globalsupport.com

Made in Japan142419861-01-01 ver.1 2019.01.15

Produktspecifikationer