Audio-Technica AT831R dimensions Specifications

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AT831R

Output shall be low impedance balanced (250 ohms).

The microphone shall have a 4 m (13.1') permanently attached miniature cable terminating in a TA3F-type output connector. The output connector shall connect to a TB3M-type jack on the included power module. The power module shall contain a recessed switch to permit choice of flat response or 80 Hz low-frequency roll-off. The output of the power module shall be a 3-pin XLRM-type connector.

The microphone shall be 25.0 mm (0.98") long and have a diameter of

10.2mm (0.40"). Weight shall be 2.8 grams (0.1 oz). The microphone shall include a power module, a clothing clip, an instrument adapter, a windscreen and a protective carrying case. Finish shall be low- reflectance black.

The microphone shall also be available with a 1.4 m (55") permanently attached miniature cable terminated for use with Audio-Technica UniPak® body-pack transmitters and a variety of other manufacturers’ wireless systems. No power module shall be required or included with the wireless models. The wireless models’ dimensions and polar pattern shall be identical to those of the wired model. The microphone shall also be available unterminated.

The Audio-Technica AT831R is specified.

The Audio-Technica [AT831cW]; [AT831cT]; [AT831cT5]; [AT831HRS-6] (wireless version) is specified.

The Audio-Technica AT831c (unterminated) is specified.

Specifications

 

 

 

Element

Fixed-charge back plate, permanently

 

polarized condenser

Polar pattern

Cardioid

Frequency response

40-16,000 Hz

Low frequency roll-off

80 Hz, 18 dB/octave

Open circuit sensitivity

–42 dB (7.9 mV) re 1V at 1 Pa

Impedance

250 ohms

Maximum input sound level

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

Dynamic range (typical)

112 dB, 1 kHz at Max SPL

Signal-to-noise ratio1

65 dB, 1 kHz at 1 Pa

Phantom power requirements

11-52V DC, 2 mA typical

Switch

Flat, roll-off

Weight

Microphone: 2.8 g (0.1 oz)

 

Power module: 81 g (2.9 oz)

Dimensions

Microphone: 25.0 mm (0.98") long,

 

10.2 mm (0.40") diameter

 

Power module: 92.9 mm (3.66") long,

 

18.9 mm (0.74") diameter

Output connector

Power module: Integral 3-pin XLRM-type

Cable

4.0 m (13.1') long (permanently attached

 

to microphone), 3.2 mm (0.13") diameter,

 

2-conductor, shielded cable with TA3F-

 

type connector

Audio-Technica case style

M1

Accessories furnished

AT8538 power module; AT8419 clothing

 

clip; AT8444 instrument adapter; AT8116

 

windscreen; protective carrying case

 

 

In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request.

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

1Typical, A-weighted, using Audio Precision System One. Specifications are subject to change without notice.

frequency response: 40–16,000 Hz

 

 

 

in dB

 

 

 

 

 

 

Response

10 dB

 

 

 

 

50

100

200

500

1k

2k

5k

10k

20k

 

 

 

Frequency in Hertz

 

 

 

LEGEND

 

12" or more on axis

 

 

 

 

 

 

Roll-off

 

 

 

 

 

 

polar pattern

 

 

 

 

 

 

330˚

30˚

 

 

 

 

 

 

 

 

 

 

 

 

300˚

 

 

 

60˚

 

 

 

 

270˚

 

 

 

90˚

 

 

 

 

240˚

 

 

 

120˚

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

 

 

210˚

 

150˚

 

 

200 Hz

 

 

180˚

 

 

1 kHz

 

 

 

 

 

 

 

5 kHz

 

 

SCALE IS 5 DECIBELS PER DIVISION

 

 

 

 

8 kHz

 

 

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224

 

Audio-Technica Limited, Old Lane, Leeds LS11 8AG England

 

©2010 Audio-Technica U.S., Inc. audio-technica.com

0001-0182-01

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Contents Operation and Maintenance FeaturesWireless Models Description Architect’s and Engineer’s SpecificationsSpecifications
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AT831R specifications

The Audio-Technica AT831R is a professional-grade lavalier microphone, designed specifically for superior audio quality in a compact form factor. Renowned for its versatility and reliability, the AT831R is a popular choice among sound engineers, filmmakers, and presenters who require exceptional performance in various recording situations.

One of the defining features of the AT831R is its omnidirectional polar pattern. This allows the microphone to capture sound equally from all directions, making it ideal for interviews, stage performances, and broadcast applications where the speaker's movement can vary. Its broad frequency response of 30 Hz to 20 kHz ensures that it can reproduce both the richness of lower frequencies and the brightness of higher harmonics, resulting in a natural sound that adds clarity to any audio project.

The AT831R incorporates a low-frequency roll-off switch, which helps reduce bass rumble and other unwanted background noise, providing users with more control over their audio capture. This feature is particularly useful when recording in environments where handling noise or low-frequency interference might be present. The microphone also boasts a high SPL handling capability, which allows it to capture loud sound sources without distortion, making it effective for a wide range of applications, from capturing musical performances to spoken word presentations.

Another notable characteristic of the AT831R is its lightweight design and compact size. Weighing in at a mere few grams, this microphone can be clipped discreetly onto clothing, providing comfort for the speaker while remaining unobtrusive. This makes it suitable for on-stage performances, corporate events, and situations where visual clutter should be minimized.

The microphone comes equipped with a 1.2-meter cable terminated with a mini XLR connector, allowing seamless integration with a variety of audio equipment. The flexibility of the AT831R is further enhanced by its compatibility with various wireless systems, making it an excellent choice for professionals on the go.

In summary, the Audio-Technica AT831R is a high-quality lavalier microphone that combines versatility, durability, and superior sound quality. Its features, including an omnidirectional polar pattern, low-frequency roll-off switch, and high SPL handling capability, make it an invaluable tool for anyone in the audio production industry seeking a reliable and effective lavalier microphone solution. Whether for live performances, television, or film production, the AT831R is designed to exceed user expectations.