Audio Technica unipoint U857R Specifications

U857R / U857RL
• Two-stage foam windscreen yields dramatically improved
resistance to P-pops and other breath blasts
• Direct mounts to any / "-27 stand, or to included threaded
5
8
mounting flange
The U857R stands 12.01" (305.0 mm) from the table or podium; it
is also available in a 16.58" (421.0 mm) version as U857RL. The
two models are identical in all other respects.
The U857R requires 11V to 52V phantom power for operation.
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
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 vibrations.
The U857R features a 9.8' (3.0 m) permanently attached miniature
cable. It connects to the provided AT8538 power module via a
special TA3F-type connector designed to optimize RFI immunity.
Cable exit is from the bottom of the microphone. The included pass-
through adapter, designed for use with desk stands and
microphone stands, provides a side-exit for the cable.
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.
CARDIOID CONDENSER ADAPTER-MOUNT
GOOSENECK MICROPHONES
• Designed for high-quality
sound reinforcement,
professional recording and
broadcasting
• Superior off-axis rejection for
maximum gain before
feedback
• UniGuard ™ RFI-shielding
technology offers outstanding
rejection of radio frequency
interference (RFI)
• Easy-to-adjust, rugged,
small-diameter, alternating
gooseneck with virtually no
"memory" permits quick
positioning into desired shape
• 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°
® filter provides easy
U857R / U857RL SPECIFICATIONS
ELEMENT
POLAR PATTERN
FREQUENCY RESPONSE
LOW FREQUENCY ROLL-OFF
OPEN CIRCUIT SENSITIVITY
IMPEDANCE
MAXIMUM INPUT SOUND LEVEL
DYNAMIC RANGE (typical)
SIGNAL-TO-NOISE RATIO 1
PHANTOM POWER
REQUIREMENTS
SWITCH
WEIGHT
U857R
U857RL
POWER MODULE
DIMENSIONS
U857R
U857RL
BOTH
POWER MODULE
OUTPUT CONNECTOR
(power module)
CABLE
OPTIONAL INTERCHANGEABLE
ELEMENTS
ACCESSORIES FURNISHED
† 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 2 = 10 microbars = 94 dB SPL
1 Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
Polar Pattern
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51689 ©2005 Audio-Technica U.S., Inc.
†
Fixed-charge back plate
permanently polarized
condenser
Cardioid
30-20,000 Hz
80 Hz, 18 dB/octave
–39 dB (11.2 mV) re 1V at 1 Pa*
250 ohms
139 dB SPL, 1 kHz at 1% T.H.D.
115 dB, 1 kHz at Max SPL
70 dB, 1 kHz at 1 Pa*
11-52V DC, 2 mA typical
Flat, roll-off
4.4 oz (124 g)
4.6 oz (131 g)
2.9 oz (81 g)
12.01" (305.0 mm) long
16.58" (421.0 mm) long
0.48" (12.2 mm) head diameter
3.66" (92.9 mm) long,
0.74" (18.9 mm) diameter
Integral 3-pin XLRM-type
9.8' (3.0 m) long (permanently
attached to microphone), 0.13"
(3.2 mm) diameter, 2-conductor,
shielded cable with TA3F-type
connector
UE-H hypercardioid (100°);
UE-O omnidirectional (360°);
UE-UL UniLine ™ (90°)
AT8538 power module;
AT8663 A-mount flange;
AT8664 A-mount cable pass-
through adapter; AT8153 two-
stage foam windscreen
Frequency Response
Frequency in Hertz
12" or more on axis
Roll-off
Printed in U.S.A.