Audio-Technica ATM250 - Manual
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• Frequency response tailored for kick drum, percussion, brass, and
other highly dynamic instruments
• Handles very high SPL at close range
• Big, warm low-frequency response with excellent presence
• Hypercardioid polar pattern reduces pickup of sounds from the
sides and rear, improving isolation of desired sound source
• Durable performance for professional applications
• Hi-ENERGY
®
neodymium magnet for improved output and
transient response
• Superior off-axis rejection for maximum gain before feedback
• Corrosion-resistant contacts from gold-plated XLRM-type
connector
• Rugged, all-metal design and construction for years of trouble-free
use
• Includes isolation clamp for shock protection, secure mounting and
easy positioning
O u t p u t f r o m t h e m i c r o p h o n e ' s X L R M - t y p e c o n n e c t o r i s l o w
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.
The ATM250 includes an AT8471 isolation clamp to provide secure
m o u n t i n g , v e r s a t i l e p o s i t i o n i n g a n d e f f e c t i v e d a m p e n i n g o f
unwanted mechanical noise.
Take care to keep foreign particles from entering the windscreen. An
accumulation of iron or steel filings on the diaphragm, and/or foreign
m a t e r i a l i n t h e w i n d s c r e e n ' s m e s h s u r f a c e , c a n d e g r a d e
performance.
Audio -Technica U.S., Inc.,
1221 Commerce Drive, Stow, Ohio 44224
Audio -Technica Limited,
Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51799 ©2006 Audio -Technica U.S., Inc. Printed in China
ATM250
ATM250 SPECIFICATIONS
†
ELEMENT
Dynamic
POLAR PATTERN
Hypercardioid
FREQUENCY RESPONSE
40-15,000 Hz
OPEN CIRCUIT SENSITIVITY
–54 dB (1.9 mV) re 1V at 1 Pa*
IMPEDANCE
600 ohms
WEIGHT
252 g (8.9 oz)
DIMENSIONS
127.5 mm (5.02") long,
55.0 mm (2.17") diameter
OUTPUT CONNECTOR
Integral 3-pin XLRM-type
ACCESSORIES FURNISHED
AT8471 isolation clamp for
5
/
8
"-27 threaded stands;
5
/
8
"-27 to
3
/
8
"-16 threaded adapter;
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
Specifications are subject to change without notice.
HYPERCARDIOID DYNAMIC
INSTRUMENT MICROPHONE
8 kHz
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
Frequency in Hertz
LEGEND
12" or more on axis
Frequency Response
Response in dB
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