200 Hz
1 kHz
5 kHz
8 kHz
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
AT857AMx
AT857AMLx
Polar Pattern
AT857AMLx
Dimensions
Audio-Technica U.S., Inc.,
1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited,
Old Lane, Leeds LS11 8AG England
Form No. 0310-0857-00-B/W P50902 © 1996 Audio-Technica U.S., Inc. Printed in U.S.A.
0.47"
12.0 mm
1.39"
35.2 mm
310.2 mm
12.21"
30.0 mm
1.18"
2.6 mm
0.10"
3.58"
91.0 mm
0.83"
21.0 mm
AT857AMx/AT857AMLx
SPECIFICATIONS
†
ELEMENT
Fixed-charge back plate
permanently polarized condenser
POLAR PATTERN
Cardioid (Unidirectional)
FREQUENCY RESPONSE
30 -20,000 Hz
LOW-FREQUENCY ROLL-OFF
150 Hz, 6 dB/octave
OPEN CIRCUIT SENSITIVITY
–43 dB (7.0 mV) re 1V at 1 Pa*
IMPEDANCE
200 ohms (1000 ohms without power module)
MAXIMUM INPUT SOUND LEVEL
138 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE
(TYPICAL)
111 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
1
67 dB, 1 kHz at 1 Pa*
SWITCH
Flat response, low-roll-off (recessed)
PHANTOM POWER REQUIREMENTS
9 -52V DC, 2 mA typical
WEIGHT
MICROPHONE
(AT857AMx)
3.6 oz (103 grams)
(AT857AMLx)
4.6 oz (131 grams)
POWER MODULE
2.1 oz (60 grams)
DIMENSIONS
MICROPHONE
(AT857AMx)
12.21" (310.2 mm) long above mounting surface
(AT857AMLx)
19.00" (482.5 mm) long above mounting surface
(BOTH)
0.47" (12.0 mm) head diameter
POWER MODULE
3.58" (91.0 mm) long, 0.83" (21.0 mm) diameter
OUTPUT CONNECTOR
(POWER MODULE)
Integral 3-pin XLRM-type
CABLE
9.8' (3.0 m) long (permanently attached to
microphone), 0.10" (2.6 mm) diameter,
2-conductor, shielded cable; free end attaches to
screw terminals in power module
ACCESSORIES FURNISHED
AT8102 two-stage foam windscreen;
AT8533x power module;
AT8425
5
/
8
"-27 threaded mounting stud
OPTIONAL INTERCHANGEABLE ELEMENTS
AT853H-ELE hypercardioid (100°)
AT853O-ELE omnidirectional (360°)
AT853SC-ELE subcardioid (170°)
†
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.
Optional Accessories:
• AT8104a metal lockable windscreen.
• AT8117 large foam windscreen.
• AT8314 2-conductor, shielded, vinyl-jacketed,
broadcast-type cable with XLRF-type
connector at microphone end, XLRM-type
connector at equipment end. Available in
10', 20', 25', 30', 50' & 100' lengths.
• AT8416 shock mount.
• CP8201 line matching transformer
(Lo-Z to 50,000 ohms).
• CP8506 four-channel 48V phantom power
supply (AC powered).
• CP8508 single-channel 24V phantom power
supply (AC powered).
AT857AMx
Dimensions
1.39"
35.2 mm
30.0 mm
1.18"
2.6 mm
0.10"
0.47"
12.0 mm
19.00"
482.5 mm
3.58"
91.0 mm
0.83"
21.0 mm
Shield strands,
fully twisted
Yellow-Yellow
Red-Red
1
/
8
" strip reds
and yellows
1
/
2
"
1"
One-Year Limited Warranty
Audio-Technica microphones and accessories purchased in the
U.S.A. are warranted for one year from date of purchase by
Audio-Technica U.S., Inc. (A.T.U.S.) to be free of defects in
materials and workmanship. In event of such defect, product
will be repaired promptly without charge or, at our option,
replaced with a new product of equal or superior value if deliv-
ered to A.T.U.S. or an Authorized Service Center, prepaid,
together with the sales slip or other proof of purchase date.
Prior approval from A.T.U.S. is required for return.
This
warranty excludes defects due to normal wear, abuse, ship-
ping damage, or failure to use product in accordance with
instructions. This warranty is void in the event of unauthorized
repair or modification.
For return approval and shipping information,
contact the
Service Department, Audio -Technica U.S., Inc., 1221
Commerce Drive, Stow, Ohio 44224.
Except to the extent precluded by applicable state law,
A.T.U.S. will have no liability for any consequential, inci-
dental, or special damages; any warranty of merchantabil-
ity or fitness for particular purpose expires when this war-
ranty expires.
This warranty gives you specific legal rights, and you may
have other rights which vary from state to state.
Outside the U.S.A., please contact your local dealer for war-
ranty details.
Terminal
screws
Case
grounding
contact
Yellow-Yellow
Red-Red
Shield
PC board
switch side
S
Y
R
Figure 1
Figure 2
