User Manual

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P52003 ©2007 Audio-Technica U.S., Inc. Printed in Taiwan
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
100
50
200
LEGEND
10k
5k
1k
500
2k
20k
Frequency in Hertz
Frequency Response
Response in dB
10 dB
• Compact, lightweight stereo condenser microphone designed for any
camcorder with an accessory shoe and stereo microphone input
• Also suitable for a wide range of stereo applications, including field
recording and studio use (with accessories available separately)
• Offers the convenience of high-quality stereo pickup in a single
microphone
• 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
• Permanently attached 6"-12" coiled cable with right-angle molded
3.5 mm stereo mini-plug at output end
• Includes camera-mount, windscreen, battery and protective pouch
The PRO 24-CM is a compact, lightweight stereo condenser microphone
ideal for use with camcorders that are equipped with a 3.5 mm (
1
/
8
") stereo
microphone input and an accessory shoe. The microphone is designed for
either battery operation or for battery-free operation when used with
camcorders (or other recording devices) that provide plug-in power (2-10
volts DC) at the mic input. If used
without plug-in power, install the battery
before attempting use. If used
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-CM is used with plug-in power.
To mount the PRO 24-CM on your camcorder:
1) Slide the microphone into the included camera-mount.
2) Slide the camera-mount into your camcorder's accessory shoe.
3) Tighten the mounting knob so the camera-mount is held securely in
place.
4) Connect the 3.5 mm stereo mini-plug to the MIC input on your camcorder.
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.
The PRO 24-CM is equipped with an ON/OFF switch for convenient
operation. When you use the microphone, turn the power switch ON. Turn
the switch OFF after use.
Output for each stereo channel is low impedance (Lo-Z) unbalanced. The
permanently attached 152.4 mm - 304.8 mm (6"-12") coiled cable features a
right-angle molded 3.5 mm stereo mini-plug at the output end.
Locating the PRO 24-CM 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.
PRO 24-CM 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.
SIGNAL-TO-NOISE RATIO
1
57 dB, 1 kHz at 1 Pa*
DYNAMIC RANGE (typical) 82 dB, 1 kHz at Max SPL
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 111 g (3.9 oz)
DIMENSIONS 116.5 mm (4.59") long,
21.0 mm (0.83") maximum body
diameter
OUTPUT CONNECTOR 3.5 mm stereo mini-plug on cable
CABLE Permanently attached 152.4 mm -
304.8 mm (6"-12") coiled cable with
right-angle molded 3.5 mm stereo
mini-plug at output end
ACCESSORIES FURNISHED Video-camera shoe mount; LR44
battery; windscreen; soft protective
pouch
†
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.
PRO 24-CM STEREO CONDENSER MICROPHONE