Audio Technica unipoint U857AU Specifications

U857AU
UNILINE
• Accepts interchangeable elements to permit angle of acceptance
from 90º to 360º
• Two-stage foam windscreen yields dramatically improved
resistance to P-pops and other breath blasts
• Direct mounts to any 5 / "-27 stand, or to included threaded
8
mounting flange
• Operates on battery or phantom power
The U857AU requires 11-52V DC phantom power or a 1.5V AA
battery for operation. A battery need not be in place for phantom
power operation.
Battery installation: Remove the cap from the top of the power
module. Insert a fresh 1.5V AA battery ("+" end toward the cap
release button), then reassemble the power module. Alkaline
batteries are recommended for longest life. Remove the battery
during long-term storage.
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 U857AU features a 9.8' (3.0 m) permanently attached
miniature cable. It connects to the provided AT8531 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.
™ CONDENSER GOOSENECK MICROPHONE
• Designed for high-quality
sound reinforcement,
professional recording and
broadcasting
• 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)
• 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
® filter provides easy
U857AU SPECIFICATIONS†
ELEMENT
POLAR PATTERN
FREQUENCY RESPONSE
LOW FREQUENCY ROLL-OFF
OPEN CIRCUIT SENSITIVITY
(Phantom / Battery)
IMPEDANCE (Phantom / Battery)
MAXIMUM INPUT SOUND LEVEL
(Phantom / Battery)
DYNAMIC RANGE (typical)
(Phantom / Battery)
SIGNAL-TO-NOISE RATIO 1
PHANTOM POWER REQUIREMENTS 11-52V DC, 2 mA typical
BATTERY TYPE
BATTERY CURRENT/LIFE
SWITCH
WEIGHT
MICROPHONE
POWER MODULE
DIMENSIONS
MICROPHONE
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 = 10 microbars = 94 dB SPL
2
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
P51688 ©2005 Audio-Technica U.S., Inc.
Fixed-charge back plate
permanently polarized condenser
Line Cardioid
30-20,000 Hz
80 Hz, 18 dB/octave
–38 dB (12.5 mV) /
–39 dB (11.2 mV) re 1V at 1 Pa*
200 ohms / 270 ohms
130 dB / 120 dB SPL,
1 kHz at 1% T.H.D.
110 dB / 100 dB,
1 kHz at Max SPL
74 dB, 1 kHz at 1 Pa*
1.5V AA/UM3
0.4 mA / 1200 hours typical
(alkaline)
Off, on-flat, on-roll-off
5.0 oz (141 g)
4.9 oz (139 g)
16.81" (427.0 mm) long,
0.48" (12.2 mm) head diameter
3.31" (84.0 mm) H x
2.48" (63.0 mm) W x
0.87" (22.0 mm) D
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-C cardioid (120°);
UE-H hypercardioid (100°);
UE-O omnidirectional (360°)
AT8531 power module; AT8154
two-stage foam windscreen;
AT8663 A-mount flange;
AT8664 A-mount cable
pass-through adapter; battery
Frequency Response
Frequency in Hertz
12" or more on axis
Roll-off
Printed in U.S.A.