Audio-Technica U851RO manual Specifications

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U851RO

The microphone shall have a maximum width of 84.0 mm (3.31"), a maximum length of 108.0 mm (4.25") and a maximum height of 23.0

mm(0.91"). Weight shall be 262 grams (9.2 oz). The microphone shall be housed in a die-cast case with a perforated steel grille. Finish shall be low-reflectance black. The microphone shall include a soft protective pouch.

The Audio-Technica U851RO is specified.

Specifications

 

 

 

Element

Fixed-charge back plate, permanently

 

polarized condenser

Polar pattern

Omnidirectional in hemisphere above

 

mounting surface

Frequency response

30-20,000 Hz

Low frequency roll-off

80 Hz, 18 dB/octave

Open circuit sensitivity

–31 dB (28.2 mV) re 1V at 1 Pa

Impedance

200 ohms

Maximum input sound level

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

Dynamic range (typical)

111 dB, 1 kHz at Max SPL

Signal-to-noise ratio1

73 dB, 1 kHz at 1 Pa

Phantom power requirements

11-52V DC, 4 mA typical

Switch

Flat, roll-off

Weight

262 g (9.2 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

TB3M-type

Cable

7.6 m (25.0') long, 3.2 mm (0.13")

 

diameter, 2-conductor, shielded cable with

 

TA3F-type and XLRM-type connectors

Optional interchangeable elements

UE-C cardioid (120°)

 

UE-H hypercardioid (100°)

Accessory furnished

Soft protective pouch

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: 30–20,000 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

0001-0276-00

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Contents Architect’s and Engineer’s Specifications FeaturesInstallation and Operation U851RO DescriptionSpecifications U851RO

U851RO specifications

The Audio-Technica U851RO is a state-of-the-art boundary microphone renowned for its advanced features and exceptional audio performance. Designed specifically for professional applications such as conferencing, broadcast, and various stage productions, the U851RO has gained recognition for its reliable sound pickup and versatile design.

One of the standout characteristics of the U851RO is its high-quality condenser element. This technology allows for precise audio capture, providing clarity and detail in voice reproduction. The microphone offers a frequency response of 30 Hz to 20 kHz, ensuring it captures both the low-end fullness and the high-end brilliance of sound without distortion. The result is an incredibly natural listening experience, making it ideal for spoken word applications and live performances.

The U851RO features a cardioid polar pattern, which aids in reducing pickup of unwanted ambient noise from the sides and rear. This is especially beneficial in environments with significant background noise or when several speakers are present. By focusing on the sound source directly in front of the microphone, it ensures that the audio remains clear and intelligible.

Another notable technology embedded in the U851RO is its built-in low-cut filter. The low-cut filter effectively reduces low-frequency noise, such as rumble from HVAC systems or handling noise, enhancing the overall clarity of the audio. Additionally, this microphone includes a switchable, pre-attenuation pad, which provides flexibility when recording loud sound sources, allowing for a better dynamic range capture.

Durability and design are pivotal for any professional microphone, and the U851RO does not disappoint. Its robust construction ensures longevity, making it suitable for frequent use in various settings. The sleek, low-profile design is aesthetically pleasing and allows for discreet placement on tables or stages.

Furthermore, the microphone can be powered via phantom power, making it easy to integrate into existing audio setups. The detachable cable adds to its convenience, allowing for easy replacement or upgrades as needed.

In conclusion, the Audio-Technica U851RO is a feature-rich boundary microphone that excels in performance, versatility, and design. With its advanced audio technology, excellent noise cancellation capabilities, and durable build, it stands out as an essential tool for professionals seeking high-quality recordings in demanding environments.