Audio Technica ATM250DE Specifications

ATM250DE

8 kHz

Polar Pattern (Condenser)

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

200 Hz

1 kHz 5 kHz

Frequency in Hertz

LEGEND

12" or more on axis

Roll-off

Frequency Response (Condenser)

Response in dB

8 kHz

Polar Pattern (Dynamic)

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

200 Hz

1 kHz 5 kHz

Frequency in Hertz

LEGEND

12" or more on axis

Frequency Response (Dynamic)

Response in dB

DUAL-ELEMENT INSTRUMENT MICROPHONE

• Audio-Technica's proven dual-element design features two elements (condenser and dynamic) enclosed in a single housing

• Neodymium dynamic element provides punch and attack, while the condenser element captures the full audio spectrum

• Elements are positioned in a perfect phase relationship, something practically unachievable with two separate microphones

• Perfect for kick drum, guitar amps and instrument use

• Integral 80 Hz HPF switch and 10 dB pad (condenser element)

• Versatile mounting options and effective dampening of mechanical noise thanks to included AT8471 isolation clamp

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

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

The ATM250DE is intended for use in professional applications where remote power is available. It requires 11V to 52V DC phantom power only to the condenser output of the supplied cable.

Output from the microphone's 5-pin XLRM-type connector is low impedance (Lo-Z) balanced. The included 5.0 m (16.5') shielded cable features a 5-pin XLRF-type input connector and two standard 3-pin XLRM-type output connectors. The balanced signals appear across Pins 2 and 3 (condenser) and Pins 4 and 5 (dynamic). Pin 1 is ground (shield). Output is phased so that positive acoustic pressure produces positive voltage at Pins 2 and 4.

To avoid phase cancellation and poor sound, all mic cables must be wired consistently: Pin 1-to-Pin 1, etc.

An integral 80 Hz hi-pass filter on the condenser element provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically-coupled vibrations.

TM250DE's condenser element is also equipped with a

The A switchable 10 dB pad that lowers the microphone's sensitivity, thus providing higher SPL capability for flexible use with a wide range of

ormers and system configurations.

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The ATM250DE includes an AT8471 isolation clamp to provide secure mounting, versatile positioning and effective dampening of unwanted mechanical noise

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ving 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. 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.

ATM250DE SPECIFICATIONS

†

ELEMENTS Condenser, dynamic

POLAR PATTERN Cardioid (condenser)

Hypercardioid (dynamic)

FREQ

UENCY RESPONSE

40-20,000 Hz (condenser) 40-15,000 Hz (dynamic)

LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave (condenser)

OPEN CIRCUIT SENSITIVITY –49 dB (3.5 mV) re 1V at 1 Pa*

(condenser) –53 dB (2.2 mV) re 1V at 1 Pa* (dynamic)

IMPEDANCE 50 ohms (condenser)

600 ohms (dynamic)

MAXIMUM INPUT SOUND LEVEL 148 dB SPL, 1 kHz at 1% T.H.D.

(condenser)

DYNAMIC RANGE (typical) 122 dB, 1 kHz at Max SPL

(condenser)

SIGNAL-T

O-NOISE RATIO

, 1 kHz at 1 Pa* (condenser)

68 dB

PHANTOM POWER 11-52V DC, 3.5 mA typical REQUIREMENTS (condenser)

SWITCHES (condenser only) Flat, roll-off; 10 dB pad

WEIGHT 320 g (11.3 oz)

DIMENSIONS 143.6 mm (5.65") long,

55.0 mm (2.17") diameter

OUTPUT CONNECTOR Integral 5-pin XLRM-type

CABLE 5.0 m (16.5') dual shielded,

8-conductor cable, 5-pin XLRF-type connector at microphone, two 3-pin XLRM-type output connectors

ACCESSORIES FURNISHED

AT8471 isolation clamp for

/8"-27 threaded stands;

/8"-27 to 3/8"-16 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

Typical, A-weighted, using Audio Precision System One.

Specifications are subject to change without notice.

= 10 microbars = 94 dB SPL

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224

Audio-Technica Limited, Old Lane, Leeds LS11 8AG England

www.audio-technica.com