Audio Technica PRO 24 Specifications

SCALE IS 5 DECIBELS PER DIVISION

Polar Pattern

LEGEND

1 kHz

240

180

210

270

300

330

0

150

120

90

30

60

1 kHz

LEFT

RIGHT

12" or more on axis

10050200

LEGEND

10k

5k

1k

500

2k

20k

Frequency in Hertz

Frequency Response

Response in dB

10 dB

PRO 24 STEREO CONDENSER MICROPHONE

• Designed for a wide range of stereo applications, including
field recording, video production and studio use

• Offers the convenience of high-quality stereo pickup in a single
microphone

• Compact, lightweight design is perfect for camera-mount use

• Battery-free operation when used with recording devices that
provide plug-in power at the mic input

• Pair of cardioid condenser elements in X/Y configuration provides
the spatial impact and realism of a live sound field

• Professional condenser circuitry ensures excellent sound quality

• On/off switch for convenient operation

The PRO 24 is designed for either battery operation or for battery­free operation when used with recording devices that provide plug­in power (2-10 volts DC) at the mic input. If used
power, install the battery before attempting use. If used

without plug-in

with

a recording device equipped for plug-in power, simply plug the
microphone cable’s stereo mini-plug directly into the recording
device’s microphone input. No battery is needed when the PRO 24
is used with plug-in power.

PRO 24 SPECIFICATIONS

†

ELEMENTS Fixed-charge back plate

permanently polarized condenser

POLAR PATTERN X/Y Stereo

FREQUENCY RESPONSE 100-17,000 Hz

OPEN CIRCUIT SENSITIVITY –50 dB (3.1 mV) re 1V at 1 Pa*

IMPEDANCE 600 ohms

MAXIMUM INPUT SOUND LEVEL 119 dB SPL, 1 kHz at 1%T.H.D.

DYNAMIC RANGE (typical) 82 dB, 1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO

1

57 dB, 1 kHz at 1 Pa*

POWER REQUIREMENTS 2-10V DC plug-in power

BATTERY TYPE 1.5V LR44

BATTERY CURRENT / LIFE 0.6 mA / 200 hours typical

SWITCH On/off

WEIGHT 3.9 oz (111 g)

DIMENSIONS 4.59" (116.5 mm) long,

0.83" (21.0 mm) maximum body
diameter

OUTPUT CONNECTOR 3.5 mm stereo mini plug on cable

CABLE Permanently attached 6' (1.8 m)

cable with 3.5 mm stereo plug at
output end

ACCESSORIES FURNISHED AT8405a stand clamp for 5/8"-27

threaded stands;
threaded adapter; LR44 battery;

†

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

1

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

Specifications are subject to change without notice.

2

= 10 microbars = 94 dB SPL

windscreen; soft protective pouch

5

/8"-27 to 3/8"-16

Battery installation: Unscrew the lower section of the microphone
and slide it down to reveal the battery compartment. Insert the
battery being certain to observe polarity as indicated (+ end toward
the front of the microphone). Close and secure the cover. Remove
the battery during long-term storage.

Output for each stereo channel is low impedance (Lo-Z)
unbalanced. The included 6' (1.8 m) shielded cable features a

3.5 mm stereo mini-plug at the output end.

Locating the PRO 24 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.

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.

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224

Audio-Technica Limited, Old Lane, Leeds LS11 8AG England

www.audio-technica.com

P51675-EN ©2004 Audio-Technica U.S., Inc. Printed in Taiwan