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PRO 37
SMALL-DIAPHRAGM CARDIOID
CONDENSER MICROPHONE
• Ideal for acoustic guitar, overheads, piano and group vocals
• Professional performance for studio recording and live sound
reinforcement
• Excels in high-SPL applications
• Low-mass element for superb transient response
• Corrosion-resistant contacts from gold-plated XLRM-type
connector
• Rugged design and construction for reliable performance
• Cardioid polar pattern reduces pickup of sounds from the sides
and rear, improving isolation of desired sound source
The PRO 37 is intended for use in professional applications where
remote power is available. It requires 11V to 52V DC phantom
power, which may be provided by a mixer or console, or by a
separate, in-line source such as the Audio-Technica AT8801
single-channel or CP8506 four-channel phantom power supplies.
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.
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 37 SPECIFICATIONS
†
ELEMENT
POLAR PATTERN
FREQUENCY RESPONSE
OPEN CIRCUIT SENSITIVITY
IMPEDANCE
MAXIMUM INPUT SOUND LEVEL
DYNAMIC RANGE (typical)
SIGNAL-TO-NOISE RATIO
1
PHANTOM POWER REQUIREMENTS
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
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
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
P51680-EN
©2004 Audio-Technica U.S., Inc.
Fixed-charge back plate
permanently polarized condenser
Cardioid
30-15,000 Hz
–42 dB (7.9 mV) re 1V at 1 Pa*
200 ohms
141 dB SPL, 1 kHz at 1% T.H.D.
112 dB, 1 kHz at Max SPL
65 dB, 1 kHz at 1 Pa*
11-52V DC, 2 mA typical
1.7 oz (49 g)
3.9" (99.0 mm) long, 0.83"
(21.0 mm) maximum body diameter
Integral 3-pin XLRM-type
AT8405a stand clamp for
5
/
"-27
8
threaded stands;
5
/
"-27 to
3
/
"-16
8
8
threaded adapter; windscreen;
soft protective pouch
Frequency Response
200
500
1k
2k
5k
10k
20k
Frequency in Hertz
12" or more on axis
Printed in Japan
10 dB
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