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AT897
LINE + GRADIENT CONDENSER MICROPHONE
• Designed for video production and broadcast (ENG/EFP) audio
acquisition
• Short length (11") ensures mic stays out of the shot – even when
used with compact digital cameras
• Smooth, natural-sounding on-axis audio quality
• Provides the narrow acceptance angle desirable for long-distance
sound pickup
• Excellent sound rejection from the sides and rear of mic
• Switchable low-frequency roll-off
• Operates on battery or phantom power
The AT897 requires 11V to 52V DC phantom power or a 1.5V AA
battery for operation. A battery need not be in place for phantom
power operation.
Battery installation: Unscrew the lower section of the microphone
body, just below the nameplate. 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 from the microphone's XLRM-type connector is low
impedance (Lo-Z) balanced. The signal appears across Pins 2 and
3; Pin 1 is ground (shield). Output phase is "Pin 2 hot" –
positive acoustic pressure produces positive voltage at Pin 2.
To avoid phase cancellation and poor sound, all mic cables must be
wired consistently: Pin 1-to-Pin 1, etc.
An integral 80 Hz high-pass filter provides easy switching from a flat
frequency response to a low-end roll-off. The roll-off position
reduces pickup of low-frequency ambient noise (such
as traffic, air-handling systems, etc.), room reverberation and
mechanically coupled vibrations.
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.
AT897 SPECIFICATIONS
†
ELEMENT
POLAR PATTERN
FREQUENCY RESPONSE
LOW FREQUENCY ROLL-OFF
OPEN CIRCUIT SENSITIVITY
(Phantom / Battery)
IMPEDANCE (Phantom / Battery)
MAXIMUM INPUT SOUND LEVEL
(Phantom / Battery)
SIGNAL-TO-NOISE RATIO
1
DYNAMIC RANGE (typical)
(Phantom / Battery)
PHANTOM POWER
REQUIREMENTS
BATTERY TYPE
BATTERY CURRENT / LIFE
SWITCH
WEIGHT (less accessories)
DIMENSIONS
OUTPUT CONNECTOR
ACCESSORIES FURNISHED
† 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.
Specifications are subject to change without notice.
Polar Pattern
0
330
30
300
60
270
90
240
120
50
100
210
150
180
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51618-01-EN
©2004 Audio-Technica U.S., Inc.
Fixed-charge back plate
permanently polarized
condenser
Line + gradient
20-20,000 Hz
80 Hz, 12 dB/octave
–40 dB (10.0 mV) /
–41 dB (8.9 mV) re 1V at 1 Pa*
200 ohms / 300 ohms
129 dB / 115 dB SPL,
1 kHz at 1% T.H.D.
77 dB, 1 kHz at 1 Pa*
112 dB / 98 dB,
1 kHz at Max SPL
11-52V DC, 2 mA typical
1.5V AA/UM3
0.4 mA / 1200 hours typical
(alkaline)
Flat, roll-off (recessed)
5.1 oz (145 g)
10.98" (279.0 mm) long,
0.83" (21.0 mm) diameter
Integral 3-pin XLRM-type
AT8405a stand clamp for
5
/
threaded stands; AT8134
windscreen; battery;
5
/
"-27 to
8
3
/
"-16 threaded adapter;
8
protective carrying case
Frequency Response
200
500
1k
2k
5k
10k
20k
Frequency in Hertz
12" or more on axis (flat)
Roll-off
Printed in Japan
"-27
8
10 dB
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