Audio-Technica U857R Microphone User Manual


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U857R & U857RL
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
©2010 Audio-Technica U.S., Inc. audio-technica.com 0001-0130-01
Specications
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.
Specications are subject to change without notice.
[131 grams (4.6 oz)]. Finish shall be low-reectance black.
The Audio-Technica U857R [U857RL] is specied.
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
SCALE IS 5 DECIBELS PER DIVISION
240˚
180˚
210˚
270˚
300˚
330˚
0˚
150˚
120˚
90˚
30˚
60˚
12" or more on axis
LEGEND
Frequency in Hertz
Response in dB
10 dB
100
50
200
10k
5k
1k
500
2k
20k
Roll-off
frequency response: 30–20,000 Hz
polar pattern
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
U857R Microphone: 124 g (4.4 oz)
U857RL Microphone: 131 g (4.6 oz)
Power module: 81 g (2.9 oz)
U857R Microphone: 305.0 mm (12.01")
long,12.2 mm (0.48") head diameter
U857RL Microphone: 421.0 mm (16.58")
long, 12.2 mm (0.48") head diameter
Power module: 92.9 mm (3.66") long,
18.9 mm (0.74") diameter
Power module: Integral 3-pin XLRM-type
3.0 m (9.8') long (permanently attached
to microphone), 3.2 mm (0.13") diameter,
2-conductor, shielded cable with TA3F-
type connector
UE-O omnidirectional (360°)
UE-H hypercardioid (100°)
UE-UL UniLine
®
(90°)
M2
AT8538 power module; AT8663 A-mount
ange; AT8664 A-mount cable pass-
through adapter; AT8153 two-stage foam
windscreen
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
Dimensions
Output connector
Cable
Optional interchangeable elements
Audio-Technica case style
Accessories furnished
U857R U857RL
0.39"
12.2 mm
10.0 mm
0.48"
295.0 mm
11.62"
3.2 mm
0.13"
9.8'
3.0 m
305.0 mm
12.01"
12.2 mm
0.48"
10.0 mm
0.39"
421.0 mm
16.58"
3.2 mm
411.0 mm
16.19"
0.13"
3.0 m
9.8'
281
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