Audio-Technica U843R Users Manual

U843R

180˚

270˚

0˚

10 dB

15.0

20.0

User Manual

MULTIDIRECTIONAL CONDENSER BOUNDARY MICROPHONE

Introduction

Thank you for purchasing this Audio-Technica product. Before using the product, please read through the Quick Start Guide, as well as this user manual when necessary, to ensure that you use the product correctly.

Features

•Designed for surface-mount applications, such as high-quality sound reinforcement, and to provide total coverage of round or long tables with fewer microphones.

•Small-diameter microphone capsule near boundary eliminates phase distortion and delivers clear, high-output performance.

•Durable brass-carved frame and non-slip high-performance urethane foam bottom pads minimize coupling of surface vibration to the microphone.

•Low-profile design with low-reflectance finish for minimum visibility.

•U843R is ideal for a variety of video and audio conferencing applications, especially when used with an Audio-Technica automatic SmartMixer™.

Connection procedure

Output from the microphone is low impedance (Lo-Z) balanced. The signal appears across the pairs of colored wires (red and yellow wires for Ch1, white and blue wires for Ch2, and green and brown wires for Ch3); audio ground is the shield connection. Output is phased so that positive acoustic pressure produces positive voltage on the yellow, green and white wires.

Wiring

YELLOW :PIN2 (Ch1 element HOT)

RED :PIN3 (Ch1 element COLD)

BLUE :PIN2 (Ch2 element HOT) WHITE :PIN3 (Ch2 element COLD)

BROWN :PIN2 (Ch3 element HOT)

GREEN :PIN3 (Ch3 element COLD)

SHIELD :PIN1 (GND)

Polar pattern

330˚

300˚

240˚

210˚

SCALE IS 5 DECIBELS PER DIVISION

Frequency response

100

200

LEGEND 0°, 50 cm

Dimensions

30˚

60˚

120˚

150˚

500

Frequency in Hertz

LEGEND

200 Hz

90˚

1 kHz 5 kHz 8 kHz

Response in dB

10k

20k

Specifications

Element

Polar pattern Cardioid x 3

Open circuit sensitivity -37 dB (14.1 mV) (0 dB = 1 V/Pa, 1 kHz)

Impedance 100 ohms

Maximum input sound level 134 dB SPL (1 kHz at 1 % THD)

Dynamic range 105 dB (1 kHz at Max SPL)

Signal-to-noise ratio 65 dB (1kHz at 1Pa, A-weighted)

Phantom power requirements 11 - 52 V DC, 2 mA

Switches Levers adjust the elements for proper positioning

Dimensions 85.0 mm (3.35") diameter, 20.0 mm (0.79") height

Included accessory

• 1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL

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

Fixed-charge back plate, permanently polarized condenser

Weight 160 g (5.6 oz)

7.6 m (24.93') long, Unterminated-type,

Cable

Permanently attached to microphone

Soft protective pouch

85.0

Included accessory

Audio-Technica Corporation

Global Support Contact: www.at-globalsupport.com

Made in Japan

(unit: mm)

142316620-02-01 ver.1 2019.03.15