SCALE IS 5 DECIBELS PER DIVISION
Polar Pattern
200 Hz
LEGEND
5 kHz
1 kHz
8 kHz
240
180
210
270
300
330
0
150
120
90
30
60
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
• 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 Fixed-charge back plate
permanently polarized condenser
POLAR PATTERN Cardioid
FREQUENCY RESPONSE 30-15,000 Hz
OPEN CIRCUIT SENSITIVITY –42 dB (7.9 mV) re 1V at 1 Pa*
IMPEDANCE 200 ohms
MAXIMUM INPUT SOUND LEVEL 141 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical) 112 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO165 dB, 1 kHz at 1 Pa*
PHANTOM POWER REQUIREMENTS 11-52V DC, 2 mA typical
WEIGHT (less accessories) 1.7 oz (49 g)
DIMENSIONS 3.9" (99.0 mm) long, 0.83"
(21.0 mm) maximum body diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
ACCESSORIES FURNISHED AT8405a stand clamp for 5/8"-27
threaded stands; 5/8"-27 to 3/8"-16
threaded adapter; 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
1Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
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. Printed in Japan
PRO 37 SMALL-DIAPHRAGM CARDIOID
CONDENSER MICROPHONE
