Audio Technica unipoint U873R Specifications
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
U
873R
HANDHELD HYPERCARDIOID CONDENSER MICROPHONE
• Designed for high-quality sound reinforcement, professional
recording and broadcasting
• Smooth, accurate reproduction for handheld and fixed-mount
applications
• Superior off-axis rejection for maximum gain before feedback
• Hypercardioid polar pattern reduces pickup of sounds from the
sides and rear, improving isolation of desired sound source
• Integral 80 Hz high-pass filter switch and 10 dB pad switch
• Accepts interchangeable elements to permit angle of acceptance
from 100° to 360°
• Superior anti-shock engineering ensures low handling noise
• High sensitivity and high SPL capability
U873R SPECIFICATIONS
†
ELEMENT Fixed-charge back plate
permanently polarized condenser
POLAR PATTERN Hypercardioid
FREQUENCY RESPONSE 70-20,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY –41 dB (8.9 mV) re 1V at 1 P
IMPED
ANCE
200 ohms
a*
MAXIMUM INPUT SOUND LEVEL 155 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical) 131 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
1
70 dB, 1 kHz at 1 Pa*
PHANTOM POWER REQUIREMENTS 11-52V DC, 3 mA typical
SWITCHES Flat, roll-off; 10 dB pad
WEIGHT 5.6 oz (160 g)
DIMENSIONS 6.17" (156.7 mm) long,
1.48" (37.7 mm) head diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
OPTIONAL INTERCHANGEABLE UE-C cardioid (120°);
ELEMENTS UE-O omnidirectional (360°)
ACCESSORIES FURNISHED AT8122 foam windscreen;
AT8405a stand clamp for
5
/8"-27
threaded stands; 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/cm
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
2
= 10 microbars = 94 dB SPL
• Robust design for enduring dependability
The U873R requires 11V to 52V phantom power for operation.
Output from the microphone’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.
To avoid phase cancellation and poor sound, all mic cables must be
wired consistently:
Pin 1-to-Pin 1, etc.
An integral 80 Hz high-pass filter provides easy switching from a flat
frequency response to a low-end roll-off. The roll-off position
reduces the microphone’
s sensitivity to popping in close vocal use.
It also 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 a
voided.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
echnica Limited,
Audi
T
-
o
Old Lane, Leeds L
1 8AG England
1
S
www.audio-technica.com
P51705 ©2005 Audio-Technica U.S., Inc. Printed in U.S.A.
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