Audio-Technica specifications ATM650 Hypercardioid Dynamic Instrument Microphone

ATM650 HYPERCARDIOID DYNAMIC INSTRUMENT MICROPHONE

•Tailored response for musical instrument pickup–guitar cabinets, snare and other percussion

•Hypercardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source

•Durable performance for professional applications

•Special dual-wall floating construction reduces handling noise and assures consistent performance from mic to mic

•Hi-ENERGY®neodymium magnet for improved output and transient response

•Multi-stage flat grille design is engineered to enable easy placement as close as possible to sound source

•Corrosion-resistant contacts from gold-plated XLRM-type connector

•Rugged, all-metal design and construction for years of trouble-free use

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. For a high-impedance (Hi-Z) mic input, connect a Lo-Z balanced cable to a Hi-Z matching transformer (A-T CP8201 or equal) at the equipment input.

When using the ATM650 in settings with a stage monitor speaker, the speaker should be located 135° off axis (45° off the rear of the microphone). This placement, in conjunction with the microphone's uniform hypercardioid pickup pattern, will virtually eliminate the possibility of undesired audio feedback.

Take care to keep foreign particles from entering the windscreen. An accumulation of iron or steel filings on the diaphragm, and/or foreign material in the windscreen's mesh surface, can degrade performance.

Note: Remove the rubber sleeve at the base of the microphone handle to use the AT8471 isolation stand clamp (not included) for more secure, permanent installation.

ATM650 SPECIFICATIONS†

ELEMENT	Dynamic
POLAR PATTERN	Hypercardioid
FREQUENCY RESPONSE	80-17,000 Hz
OPEN CIRCUIT SENSITIVITY	–56 dB (1.5 mV) re 1V at 1 Pa*
IMPEDANCE	300 ohms
WEIGHT	279 g (9.8 oz)
DIMENSIONS	164.2 mm (6.46") long,
	38.8 mm (1.53") diameter
OUTPUT CONNECTOR	Integral 3-pin XLRM-type
ACCESSORIES FURNISHED	AT8470 Quiet-Flex™stand 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/cm2 = 10 microbars = 94 dB SPL Specifications are subject to change without notice.

Polar Pattern Frequency Response

Response in dB

Frequency in Hertz

LEGEND 12" or more on axis

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

200Hz 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

P51805 ©2006 Audio-Technica U.S., Inc. Printed in China