Audio-Technica U853RWU, U853RU User Manual
8 kHz
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
F
requency in Hertz
LEGEND
12" or more on axis
Roll-off
Frequency Response
Response in dB
U853RU/U853RWU
LESS THAN 2 TIMES “X”
DIST
ANCE “X”
90°
ANGLE OF
ACCEPTANCE
MIC A
1.5 TIMES
DISTANCE “X”
MIC B
90°90°
UNILINE™CONDENSER
HANGING MICROPHONES
• Designed for suspension over
choirs, instrumental groups
and theater stages
™
• UniLine
polar pattern
provides narrow 90°
acceptance angle
• Superior off-axis rejection for
maximum gain before
feedback
™
• UniGuard
RFI-shielding
technology offers outstanding
rejection of radio frequency
interference (RFI)
• UniSteep
®
filter pro
vides 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 (U853RU) and white (U853RWU)
The U853RU requires 11V to 52V phantom power for operation.
A uniform 90° angle of acceptance provides well-balanced audio
pickup over a narrow area. 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 source should
be no more than twice the distance to the front source
, to maintain
front-to-rear balance (Fig. 1).
Width of pickup is approximately 1.5 times the distance to the
closest performer. If additional mics are needed for wide sources,
they should be positioned apart laterally at least 1.5 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.)
U/U853RWU SPECIFICATIONS
U853R
†
ELEMENT Fixed-charge back plate
manently polarized
per
condenser
POLAR P
FREQ
LO
ATTERN
UENCY RESPONSE
W FREQUENCY ROLL-OFF
Line Cardioid
30-20,000 Hz
80 Hz, 18 dB/octa
ve
OPEN CIRCUIT SENSITIVITY –35 dB (17.7 mV) re 1V at 1 P
ANCE
IMPED
MAXIMUM INPUT SOUND LEVEL 135 dB SPL, 1 kHz at 1%
YNAMIC RANGE
D
SIGNAL-TO-NOISE RATIO
OM POWER REQUIREMENTS
PHANT
(typical)
1
250 ohms
115 dB, 1 kHz at Max SPL
74 dB, 1 kHz at 1 Pa*
11-52V DC
, 2 mA typical
T.H.D.
SWITCH Flat, roll-off
WEIGHT
OPHONE
MICR
1.1 oz (30 g)
POWER MODULE 2.9 oz (81 g)
DIMENSIONS
OPHONE
MICR
6.14" (156.0 mm) long,
0.48" (12.2 mm) diameter
WER MODULE
PO
3.66" (92.9 mm) long,
0.74" (18.9 mm) diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
(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-C cardioid (120°);
ELEMENTS UE-H h
CCESSORIES FURNISHED
A
U
U853R
ypercardioid (100°);
UE-O omnidirectional (360
T8154 two-stage foam
A
windscreen;
AT8451 steel hanger
°)
U853RWU AT8154(WH) two-stage foam
windscreen; AT8451(WH) steel
hanger
TH
BO
†
In the interest of standards de
methods to other industry professionals on request.
*1 Pascal = 10 dynes /cm
1
ypical, A-weighted, using Audio Precision System One.
T
Specifications are subject to change without notice.
velopment, A.T.U.S. offers full details on its test
2
= 10 microbars = 94 dB SPL
T8538 power module;
A
5
T8438
A
/8"-27 stand adapter
a*
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 vibr
ations.
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 110° F (43° C) for extended periods.
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
P51697 ©2005 Audi
o-Technica U.S., Inc. Printed in U.S.A.
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