Audio-Technica AT8022 Datasheet

AT8022

X/Y Stereo Microphone

broadcast & production microphones

battery during long-term storage. Battery switch must be on for battery operation. Turn off when not in use to preserve battery life. Battery switch has no effect on phantom power operation.

Note: Use battery power only when connecting the AT8022 to an unbalanced input.

Output for each stereo channel is low impedance (Lo-Z) balanced. The balanced signals appear across Pins 2 and 3 for the left channel, Pins 4 and 5 for the right channel. Pin 1 is ground (shield) for both channels. Output is “Pins 2 and 4 hot”— positive acoustic pressure produces positive voltage at Pins 2 and 4.

The end of the grille should be aimed at the sound source with the top of the microphone facing up (the top of the microphone is indicated by the left-right stereo image printed on the housing), so the stereo image matches the sound source.

Features

• Designed for video camera-mount use as well as for stereo eld recording, interviews and home recording

• Compact, lightweight design is perfect for use with handheld digital recording devices

• Operates on battery or phantom power—for use with pro or consumer equipment

• Innovative coincident capsule conguration produces accurate stereo image in smaller housing

• Includes two cables: one balanced (two 3-pin XLRM-type connectors at output); one unbalanced (3.5 mm TRS at output)

• Switchable 80 Hz high-pass lter minimizes pickup of undesired low-frequency sounds

Description

The AT8022 is a xed-charge condenser microphone with an X/Y stereo polar pattern. It is designed for broadcast, recording and eld use.

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 offers an innovative coincident capsule conguration. This allows for a smaller housing while producing an X/Y stereo image with the spatial impact and realism of a live sound eld.

The microphone includes two cables: a 2 m (6.5') balanced cable terminating in a 5-pin XLRF-type and two 3-pin XLRM-type connectors; a 0.6 m (2') unbalanced cable terminating in a 5-pin XLRF-type and a

3.5 mm TRS connectors. The output of the microphone is a 5-pin XLRM-type connector.

A switch permits choice of at response or low-frequency roll-off (via integral 80 Hz high-pass lter) 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, a battery and a soft protective pouch are also included.

Operation and Maintenance

The AT8022 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.

Locating the microphone 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.

An integral 80 Hz high-pass lter provides easy switching from a at frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as trafc, air-handling systems, etc.), room reverberation and mechanically coupled vibrations. To engage the high-pass lter, slide the switch toward to “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.

Architect’s and Engineer’s Specications

The microphone shall be a xed-charge stereo condenser. It shall have an X/Y stereo polar pattern and a frequency response of 20 Hz to 15,000 Hz. The microphone shall operate from an external 11V to 52V DC phantom power source, or alternatively, from a 1.5V AA/ UM3 battery. It shall be capable of handling sound input levels up to 128 dB (phantom) or 120 dB (battery) with a dynamic range of 109 dB (phantom) or 101 dB (battery). Nominal open-circuit output voltage shall be 12.5 mV at 1V, 1 Pascal. Output shall be low impedance balanced (250 ohms – phantom, 300 ohms – battery).

The output of the microphone shall be a 5-pin XLRM-type connector. The microphone shall include two cables: a 2 m (6.5') balanced cable with a 5-pin XLRF-type and two 3-pin XLRM-type connectors; a 0.6 m (2') unbalanced cable with a 5-pin XLRF-type and a 3.5 mm TRS connectors. The microphone shall include a switch that permits choice of at response or 80 Hz low-frequency roll-off.

The microphone shall be 186.0 mm (7.32") long and have a maximum head diameter of 47.6 mm (1.87"). Weight shall be 247 grams (8.7 oz). The microphone shall include a stand clamp, a windscreen, a battery and a soft protective pouch.

The Audio-Technica AT8022 is specied.

To install the battery, 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

Specications

Element

Polar pattern

Frequency response

Low frequency roll-off

Open circuit sensitivity

(Phantom / Battery)

Channel balance

Impedance (Phantom / Battery)

Maximum input sound level

(Phantom / Battery)

Dynamic range (typical)

(Phantom / Battery)

Signal-to-noise ratio

Phantom power requirements

Battery type

Battery current / life

Switches

Weight (less cable and accessories)

Dimensions

Output connector

Cables

Audio-Technica case style

Accessories furnished

In the interest of standards development, A.T.U.S.

offers full details on its test methods to other industry

1 Pascal = 10 dynes/cm

Typical, A-weighted, using Audio Precision System One.

Specications are subject to change without notice.

professionals on request.

= 10 microbars = 94 dB SPL

AT8022

Fixed-charge back plate, permanently polarized condenser X/Y Stereo 20-15,000 Hz 80 Hz, 18 dB/octave –38 dB (12.5 mV) / –38 dB (12.5 mV) re 1V at 1 Pa* <2.5 dB 250 ohms / 300 ohms 128 dB / 120 dB SPL, 1 kHz at 1% T.H.D. 109 dB / 101 dB, 1 kHz at Max SPL

75 dB, 1 kHz at 1 Pa 11-52V DC, 2 mA typical (each channel)

1.5V AA/UM3

0.7 mA / 700 hours typical (alkaline) Battery On/Off; Flat, roll-off 247 g (8.7 oz)

186.0 mm (7.32") long,

47.6 mm (1.87") maximum head diameter,

21.0 mm (0.83") body diameter Integral 5-pin XLRM-type Balanced: 2.0 m (6.5') long, 8 conductor, shielded, vinyl-jacketed stereo cable with 5-pin XLRF-type connector at microphone end and two 3-pin XLRM-type connectors at output end; Unbalanced: 0.6 m (2.0') long stereo cable with 5-pin XLRF-type connector at microphone end and 3.5 mm TRS connector at output end S12 AT8405a stand clamp for 5/8"-27 threaded stands; windscreen; battery; soft protective pouch

frequency response: 20–15,000 Hz

10 dB

100

12" or more on axis Roll-off

330˚

200

Frequency in Hertz

0˚

180˚

500

30˚

150˚

60˚

120˚

LEGEND

200 Hz

90˚

270˚

10k

300˚

240˚

210˚

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

polar pattern (200 Hz) polar pattern (1 kHz) polar pattern (8 kHz)

300˚

270˚

240˚

210˚

SCALE IS 5 DECIBELS PER DIVISION

Response in dB

20k

0˚

30˚

330˚

60˚

90˚

270˚

120˚

240˚

LEGEND

150˚

1 kHz

180˚

0˚

30˚

330˚

300˚

LEGEND

210˚

SCALE IS 5 DECIBELS PER DIVISION

150˚

180˚

60˚

90˚

120˚

8 kHz