AT831b
SPECIFICATIONS
†
ELEMENT
Fixed-charge back plate
permanently polarized condenser
POLAR PATTERN
Cardioid (Unidirectional)
FREQUENCY RESPONSE
40 -20,000 Hz
LOW-FREQUENCY ROLL-OFF
80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY
PHANTOM
–44 dB (6.3 mV) re 1V at 1 Pa*
BATTERY
–45 dB (5.6 mV) re 1V at 1 Pa*
IMPEDANCE
PHANTOM
200 ohms
BATTERY
270 ohms
MAXIMUM INPUT SOUND LEVEL
PHANTOM
135 dB SPL, 1 kHz at 1% T.H.D.
BATTERY
121 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE
(TYPICAL)
PHANTOM
106 dB, 1 kHz at Max SPL
BATTERY
92 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
1
65 dB, 1 kHz at 1 Pa*
SWITCH
Off, on-flat, on-roll-off
BATTERY TYPE
Use only “leakproof” AA/UM3 1.5V battery
BATTERY CURRENT
0.4 mA typical
BATTERY LIFE
1200 hours (alkaline battery)
PHANTOM POWER REQUIREMENTS
9-52V DC, 2 mA typical
WEIGHT
(LESS CABLE AND ACCESSORIES)
MICROPHONE
0.1 oz (2.8 grams)
POWER MODULE
5.2 oz (147 grams)
DIMENSIONS
MICROPHONE
0.98" (25.0 mm) long, 0.39" (10.0 mm) dia.
POWER MODULE
3.27" (83.0 mm) H x 2.48" (63.0 mm) W x
0.87" (22.0 mm) D, not including clip
OUTPUT CONNECTOR
(POWER MODULE)
Integral 3-pin XLRM-type
CABLE
Integral 6' (1.8 m), permanently attached
between microphone and power module
ACCESSORIES FURNISHED
AT8417 clothing clip; AT8444 instrument adapter;
AT8530 power module; AT8116 windscreen;
battery; protective carrying case
†
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:
• CP8201 line matching transformer
(Lo-Z to 50,000 ohms).
• AT8202 adjustable in-line attenuator for
use with balanced Lo-Z microphones.
• 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.
• AT8412 double clothing clip.
• AT8414 tie tac.
• AT8438 stand adapter.
• CP8506 four-channel 48V phantom
power supply (AC powered).
• AT8801 single-channel 48V phantom power
supply (AC powered).
AT831b
Polar Pattern
Dimensions
POWER MODULE
audio-technica
MADE IN JAPAN
OFF
PUSH
3.27"
83.0 mm
2.48"
63.0 mm
22.0 mm
0.87"
SWITCH
Roll-off
Flat
Off
Push Button
To Release Cap
AT8530 Power Module Dimensions
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 delivered 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, shipping
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, incidental,
or special damages; any warranty of merchantability or fitness for particular purpose expires when this warranty
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 warranty details.
Audio-Technica U.S., Inc.,
1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited,
Old Lane, Leeds LS11 8AG England
Form No. 0310-0764-07-B/W © 1998 Audio-Technica U.S., Inc. Printed in U.S.A.
XLRM-Type Plug Wiring
Low Impedance Balanced
1
/
4
" Phone Plug Wiring
Low Impedance Unbalanced
RED WIRE
TIP
SLEEVE
SHIELD
WHITE WIRE
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
10.0 mm
0.39"
0.98"
25.0 mm
