Audio-Technica AT875R User Manual

SCALE IS 5 DECIBELS PER DIVISION

Polar Pattern

200 Hz

LEGEND

5 kHz

1 kHz

8 kHz

12" or more on axis

LEGEND

Frequency in Hertz

Frequency Response

Response in dB

AT875R LINE + GRADIENT CONDENSER MICROPHONE

• Designed for video production and broadcast (ENG/EFP) audio acquisition

• Extremely short length (under 7") ideal for use with compact digital cameras

• Provides the narrow acceptance angle desirable for long-distance sound pickup

• Excellent sound rejection from the sides and rear of mic

AT875R SPECIFICATIONS

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ELEMENT Fixed-charge back plate

permanently polarized condenser

POLAR PATTERN Line + gradient

FREQUENCY RESPONSE 90-20,000 Hz

OPEN CIRCUIT SENSITIVITY –30 dB (31.6 mV) re 1V at 1 Pa*

IMPEDANCE 100 ohms

MAXIMUM INPUT SOUND LEVEL 127 dB SPL, 1 kHz at 1% T.H.D.

DYNAMIC RANGE (typical) 107 dB, 1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO

74 dB, 1 kHz at 1 Pa*

PHANTOM POWER 11-52V DC, 2 mA typical REQUIREMENTS

WEIGHT (less accessories) 80 g (2.8 oz)

DIMENSIONS 175.0 mm (6.89") long,

21.0 mm (0.83") 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

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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

• Tailored response minimizes camera and handling noise

• Operates on phantom power only

The AT875R requires 11V to 52V DC phantom power for operation.

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.

The high sensitivity of the AT875R assures useful output and an excellent match to most input sources. In some cases, however, an attenuator such as the Audio-Technica AT8202 may be required between the microphone and preamplifier to avoid overloading sensitive input stages.

The microphone is RoHS compliant–free from all substances specified in the EU directive on hazardous substances.

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.

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

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

www.audio-technica.com