Audio Technica OnePoint AT822 User manual

1 kHz
LEGEND
1 kHz
RIGHT
LEFT
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
LEGEND
Roll-off
12" or more on axis (flat)
Frequency in Hertz
Response in dB
10 dB
20k
10k
5k
2k
1k
500
200100
50
Frequency Response
• Ideal for DAT recording as well as television, FM and field
applications
• Pair of closely-matched cardioid elements provides the spatial
impact and realism of a live sound field
• Compact, lightweight design is perfect for camera-mount use
• Excellent channel separation
• Switchable low-frequency roll-off
The AT822 is designed for battery operation only; install the battery
before attempting use. WARNING: Do not attempt to use when
phantom power is present. Possible damage to the microphone
may result. (Please note, however, that the presence of a bias
voltage – from a DAT recorder, for example – is acceptable and will
not harm the microphone.)
Battery installation: Unscrew the lower section of the microphone
body to reveal the battery compartment. Insert a fresh 1.5V AA
battery in the handle compartment (“+” end up), then reassemble
the microphone. Alkaline batteries are recommended for longest
life. Remove the battery during long-term storage.
Output for each stereo channel is low impedance (Lo-Z)
unbalanced. The unbalanced signals appear across Pin 2 for the
left channel and Pin 3 for the right channel. Pin 1 is ground (shield)
for both channels.Output is “Pins 2 and 3 hot” – positive acoustic
pressure produces positive voltage at Pins 2 and 3.
Locating the AT822 nearer the sound source enhances the width of
the stereo image, while decreasing room ambience. Conversely, as
the mic position moves away from the sound source, a narrower
left/right stereo image results and more of the “room sound” is
noted.
The high sensitivity of the AT822 assures useful output and an
excellent match to most inputs. However, the microphone’s high
output may overload some sensitive electronic input stages under
some conditions. Many pre-amps and mixers include a mic pad or
input attenuator control to prevent overload.
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.
AT822 SPECIFICATIONS†
ELEMENTS Fixed-charge back plate
permanently polarized
condenser
POLAR PATTERN X/Y stereo
FREQUENCY RESPONSE 30-20,000 Hz
LOW-FREQUENCY ROLL-OFF 150 Hz, 6 dB/octave
OPEN CIRCUIT SENSITIVITY –45 dB (5.6 mV) re 1V at 1 Pa*
CHANNEL BALANCE ≤2.5 dB
IMPEDANCE 200 ohms unbalanced
MAXIMUM INPUT SOUND LEVEL 125 dB SPL, 1 kHz at 1%T.H.D.
SIGNAL-TO-NOISE RATIO170 dB, 1 kHz at 1 Pa*
DYNAMIC RANGE (typical) 101 dB, 1 kHz at Max SPL
BATTERY TYPE 1.5V AA/UM3
WARNING: The A
T822 is
designed for battery operation
only. Do not attempt to use
when phantom power is
present. Possible damage to the
microphone may result.
BATTERY CURRENT / LIFE 1.2 mA / 1000 hours typical
(intermittent use) (alkaline)
SWITCH Off, flat, roll-off
WEIGHT (less cables and accessories) 5.8 oz (165 g)
DIMENSIONS 7.76" (197.0 mm) long,
2.44" (62.0 mm) maximum
head width,
0.83" (21.0 mm) body diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
CABLES 1.7' (0.5 m) long, 3-conductor,
shielded, vinyl-jacketed, stereo
cable with 3-pin XLRF-type
connector at microphone end,
3.5 mm stereo mini plug at
output end. 10.0' (3.0 m) long,
3-conductor, shielded, vinyl-
jacketed, stereo cable with 3-pin
XLRF-type connector at
microphone end, two 3.5 mm
mono mini plugs with 1/4" phone
plug adapters at output end.
ACCESSORIES FURNISHED Gun-grip snap-in stand clamp for
5/8"-27 threaded stands; camera shoe
mount adapter; battery; AT8120
windscreen; soft protective pouch
†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/cm2= 10 microbars = 94 dB SPL
1T
ypical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-
Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51656-EN ©2004 Audio-Technica U.S., Inc. Printed in Japan
AT822 ONEPOINT®X/Y STEREO DAT MICROPHONE