Audio-Technica U853R, U853RW User Manual

8 kHz

Polar Pattern

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

200 Hz

1 kHz 5 kHz

Frequency in Hertz

LEGEND

12" or more on axis Roll-off

Frequency Response

Response in dB

U853R/U853RW

LESS THAN 2 TIMES “X”

DIST

ANCE “X”

20°

ANGLE OF ACCEPT

ANCE

MIC A MIC B

TIMES

DIST

ANCE “X”

120°120°

CARDIOID CONDENSER HANGING MICROPHONES

• Designed for suspension over choirs, instrumental groups and theater stages

• Superior off-axis rejection for maximum gain before feedback

™

• UniGuard

RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)

• UniSteep

filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality

• Accepts interchangeable elements to permit angle of acceptance from 90° to 360°

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

• Available in two colors: black (U853R) and white (U853RW)

The U853R requires 11V to 52V phantom power for operation.

A uniform 120° angle of acceptance provides well-balanced audio pickup. The microphone should be located forward of the front-most source, above the rear-most source, and “aimed” between them (Fig.1). Increasing the height of the mic above the sources will tend to equalize sound levels between them, but may also increase background/reverberant sound pickup. When possible, the distance from the mic to the rear-most pickup should be no more than twice the distance to the front source, to maintain front-to-rear balance (Fig. 1).

Width of pic

kup is approximately three times the distance to the closest performer. If additional mics are needed for wide sources, they should be positioned apart laterally at least three times the distance to the front source, to avoid phase cancellation (Fig. 2).

To orient the microphone in the proper direction, twist the housing slightly in its wire holder. (Clockwise rotation moves the microphone to the right; counterclockwise rotation moves it to the left.)

Output from the power module’s XLRM-type connector is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot” – positive acoustic pressure produces positive voltage at Pin 2.

An integral 80 Hz high-pass UniSteep

filter provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.

U853R/U853RW SPECIFICATIONS

†

ELEMENT Fixed-charge back plate

manently polarized

per condenser

POLAR P FREQ

ATTERN

UENCY RESPONSE

Cardioid 30-20,000 Hz

LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave OPEN CIRCUIT SENSITIVITY –39 dB (11.2 mV) re 1V at 1 P

ANCE

IMPED MAXIMUM INPUT SOUND LEVEL 139 dB SPL, 1 kHz at 1%

YNAMIC RANGE

D SIGNAL-TO-NOISE RATIO

OM POWER REQUIREMENTS

PHANT

(typical)

250 ohms

115 dB, 1 kHz at Max SPL 70 dB, 1 kHz at 1 Pa* 11-52V DC

, 2 mA typical

T.H.D.

SWITCH Flat, roll-off WEIGHT

OPHONE

MICR

0.5 oz (14 g)

POWER MODULE 2.9 oz (81 g)

DIMENSIONS

OPHONE

MICR

1.34" (34.0 mm) long,

0.48" (12.2 mm) diameter

WER MODULE

3.66" (92.9 mm) long,

0.74" (18.9 mm) diameter

OUTPUT CONNECT

ral 3-pin XLRM-type

Integ

(power module) CABLE 25.0' (7.6 m) long (per

manently attached to microphone), 0.13" (3.2 mm) diameter shielded cab

, 2 conductor

le with TA3F-type

connector

OPTIONAL INTERCHANGEABLE UE-H hypercardioid (100°); ELEMENTS UE-O omnidirectional (360

UE-UL UniLine™(90

CCESSORIES FURNISHED

U853R

T8153 two-stage foam

A windscreen;

AT8451 steel hanger

°);

°)

U853RW AT8153(WH) two-stage foam

windscreen; AT8451(WH) steel hanger

†

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

*1 Pascal = 10 dynes /cm

Typical, A-weighted, using Audio Precision System One.

Specifications are subject to change without notice

y professionals on request.

= 10 microbars = 94 dB SPL

T8538 power module;

T8438

/8"-27 stand adapter

Avoid leaving the microphone in the open sun or in areas where

atures exceed 110° F (43° C) for extended periods.

temper Extremely high humidity should also be avoided.

NOTE: Audio-Technica has developed a special RFI-shielding mechanism, which is an integral part of the connectors in the UniPoint line. If you remove or replace the connector, you may adversely affect the unit's RFI immunity.

Figure 1

Figure 2

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

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

www.audio-technica.com

o-Technica U.S., Inc. Printed in U.S.A.