audio-technica AT897 Line Plus Gradient Condenser Microphone Owner's Manual

Use the included AT8405a stand clamp for mounting on any
microphone stand with 5/8-27 threads. For large camera-mount
holders, use the supplied o-rings for secure placement.

5. Maintenance:

For optimal performance, use alkaline batteries and remove them
during long-term storage. Ensure consistent wiring of mic cables to
avoid phase cancellation.

Frequently Asked Questions (FAQ):

Q: What is the purpose of the high-pass filter on the AT897
microphone?

A: The high-pass filter helps reduce low-frequency ambient noise
pickup, such as traffic or room reverberation, providing cleaner
audio.

Q: Can I use the AT897 microphone with a camera-mount
holder?

A: Yes, you can use the microphone with a camera-mount holder by
utilizing the supplied o-rings for secure placement.

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AT897
Line + Gradient Condenser Microphone

broadcast & production microphones

Features · Designed for video production and broadcast (ENG/EFP) audio
acquisition · Short length ensures mic stays out of the shot even when used
with compact digital cameras · Provides the narrow acceptance angle desirable for long-distance
sound pickup · Smooth, natural-sounding on-axis audio quality · Offers the convenience of battery or phantom power operation · Rugged design and construction for reliable performance · Switchable 80 Hz high-pass filter minimizes pickup of undesired
low-frequency sounds
Description The AT897 is a fixed-charge condenser microphone with a line + gradient polar pattern. It is designed for video production, broadcast (ENG/EFP) audio acquisition, wildlife recording and high-quality sound reinforcement.
The microphone requires 11V to 52V phantom power or a 1.5V AA battery for operation. A battery need not be in place for phantom power operation.
The microphone’s highly directional polar pattern provides a narrow acceptance angle along with crisp, intelligible audio reproduction desirable for long-distance sound pickup.
The output of the microphone is a 3-pin XLRM-type connector.
A switch permits choice of flat response or low-frequency roll-off (via integral 80 Hz high-pass filter) to help control undesired ambient noise.
The microphone is enclosed in a rugged housing. The included AT8405a stand clamp permits mounting on any microphone stand with 5/8″-27 threads. A windscreen, two o-rings, a battery and a protective carrying case are also included.
Operation and Maintenance The AT897 requires 11V to 52V phantom power or a 1.5V AA battery for operation. A battery need not be in place for phantom power operation.
To install the battery, 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 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 the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations. To engage the high-pass filter, use the end tip of a paperclip or other small pointed instrument to slide the switch toward the “bent” line.
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.
Note: To use the microphone with a camera-mount microphone holder whose diameter is too large to secure the microphone, slide the two supplied o-rings onto the microphone handle, spaced so that one fits just in front of, and the other fits just behind, the rubber nubs inside the microphone holder. When the top of the microphone holder is closed and tightened down, the o-rings should hold the microphone securely in place.

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AT897

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Specifications

Element
Polar pattern Frequency response Low frequency roll-off Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio1 Phantom power requirements
Battery type Battery current / life
Switch Weight Dimensions
Output connector Audio-Technica case style
Accessories furnished

Fixed-charge back plate, permanently polarized condenser Line + gradient 20-20,000 Hz 80 Hz, 12 dB/octave Phantom: 40 dB (10.0 mV) re 1V at 1 Pa Battery: 41 dB (8.9 mV) re 1V at 1 Pa Phantom: 200 ohms Battery: 300 ohms Phantom: 129 dB SPL, 1 kHz at 1% T.H.D. Battery: 115 dB SPL, 1 kHz at 1% T.H.D. Phantom: 112 dB, 1 kHz at Max SPL Battery: 98 dB, 1 kHz at Max SPL 77 dB, 1 kHz at 1 Pa 11-52V DC, 2 mA typical 1.5V AA/UM3 0.4 mA / 1200 hours typical (alkaline) Flat, roll-off 145 g (5.1 oz) 279.0 mm (10.98″) long, 21.0 mm (0.83″) diameter Integral 3-pin XLRM-type SG2 AT8405a stand clamp for 5/8″-27 threaded stands; 5/8″-27 to 3/8″-16 threaded adapter; AT8134 windscreen; battery; two o-rings; 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/cm2 = 10 microbars = 94 dB SPL
1 Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.

frequency response: 20 20,000 Hz

Response in dB

10 dB

50 LEGEND

100 200 500 1k 2k Frequency in Hertz
12″ or more on axis Roll-off

polar pattern

0°

330°

30°

5k 10k 20k

300°

60°

270°

90°

240°

120°

210°

150°

180°

SCALE IS 5 DECIBELS PER DIVISION

LEGEND 200 Hz 1 kHz 5 kHz 8 kHz

P51973-02

Documents / Resources

audio-technica AT897 Line Plus Gradient Condenser Microphone [pdf] Owner's Manual
AT897 Line Plus Gradient Condenser Microphone, AT897, Line Plus Gradient Condenser Microphone, Gradient Condenser Microphone, Condenser Microphone, Microphone

References

User Manual

audio-technica AT897 Line Plus Gradient Condenser Microphone Owner’s Manual

AT897 Line Plus Gradient Condenser Microphone

Specifications:

Product Usage Instructions:

1. Powering the Microphone:

2. Output Connection:

3. High-pass Filter:

4. Mounting the Microphone: