AT822 ONEPOINT® X/Y STEREO DAT MICROPHONE
•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 |
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permanently polarized |
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condenser |
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POLAR PATTERN |
X/Y stereo |
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FREQUENCY RESPONSE |
30-20,000 Hz |
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LOW-FREQUENCY ROLL-OFF |
150 Hz, 6 dB/octave |
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OPEN CIRCUIT SENSITIVITY |
–45 dB (5.6 mV) re 1V at 1 Pa* |
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CHANNEL BALANCE |
≤2.5 dB |
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IMPEDANCE |
200 ohms unbalanced |
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MAXIMUM INPUT SOUND LEVEL |
125 dB SPL, 1 kHz at 1%T.H.D. |
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SIGNAL-TO-NOISE RATIO1 |
70 dB, 1 kHz at 1 Pa* |
DYNAMIC RANGE (typical) |
101 dB, 1 kHz at Max SPL |
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BATTERY TYPE |
1.5V AA/UM3 |
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WARNING: The AT822 is |
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designed for battery operation |
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only. Do not attempt to use |
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when phantom power is |
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present. Possible damage to the |
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microphone may result. |
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BATTERY CURRENT / LIFE |
1.2 mA / 1000 hours typical |
(intermittent use) |
(alkaline) |
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SWITCH |
Off, flat, roll-off |
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WEIGHT (less cables and accessories) |
5.8 oz (165 g) |
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DIMENSIONS |
7.76" (197.0 mm) long, |
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2.44" (62.0 mm) maximum |
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head width, |
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0.83" (21.0 mm) body diameter |
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OUTPUT CONNECTOR |
Integral 3-pin XLRM-type |
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CABLES |
1.7' (0.5 m) long, 3-conductor, |
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shielded, vinyl-jacketed, stereo |
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cable with 3-pin XLRF-type |
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connector at microphone end, |
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3.5 mm stereo mini plug at |
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output end. 10.0' (3.0 m) long, |
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3-conductor, shielded, vinyl- |
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jacketed, stereo cable with 3-pin |
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XLRF-type connector at |
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microphone end, two 3.5 mm |
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mono mini plugs with 1/4" phone |
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plug adapters at output end. |
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ACCESSORIES FURNISHED |
Gun-grip snap-in stand clamp for |
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5/8"-27 threaded stands; camera shoe |
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mount adapter; battery; AT8120 |
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windscreen; soft protective pouch |
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†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
1 Typical, A-weighted, using Audio Precision System One. Specifications are subject to change without notice.
Polar Pattern
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0 |
330 |
30 |
300 |
60 |
270 |
90 |
240 |
120 |
210 |
150 |
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180 |
SCALE IS 5 DECIBELS PER DIVISION
LEGEND |
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LEFT |
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RIGHT |
1 kHz |
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1 kHz |
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Frequency Response |
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<![if ! IE]> <![endif]>in dB |
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10 dB |
<![if ! IE]> <![endif]>Response |
50 |
100 |
200 |
500 |
1k |
2k |
5k |
10k |
20k |
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Frequency in Hertz |
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LEGEND |
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12" or more on axis (flat) |
Roll-off
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