Audio Technica AT4071a Bedienungsanleitung

1 kHz

400 Hz

200 Hz

LEGEND LEGEND

2 kHz

4 kHz

8 kHz

Polar Pattern

SCALE IS 5 DECIBELS PER DIVISION

120

150

210

240

270

300

330

180

LEGEND

Roll-off

12" or more on axis (flat)

Frequency in Hertz

Response in dB

10 dB

20k

10k

500

200100

Frequency Response

• Designed for critical long-distance pickup in broadcasting, film/TV

production, and theater sound reinforcement applications

•Direct-coupled, balanced output ensures a clean signal even in

high-output conditions

• Exclusive acoustic design provides same directivity as mics up to

50% longer (U.S. Patent No. 4,789,044)

•Rugged housing made of lightweight structural-grade aluminum

alloy

• Switchable low-frequency roll-off

The AT4071a 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.

An integral 150 Hz high-pass filter 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.

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.

AT4071a SPECIFICATIONS†

ELEMENT Externally polarized (DC bias)

condenser

POLAR PATTERN Line + gradient

FREQUENCY RESPONSE 30-20,000 Hz

LOW-FREQUENCY ROLL-OFF 150 Hz, 12 dB/octave

OPEN CIRCUIT SENSITIVITY1–21 dB (89.1 mV) re 1V at 1 Pa*

IMPEDANCE 100 ohms

MAXIMUM INPUT SOUND LEVEL 124 dB SPL, 1 kHz at 1% T.H.D.

NOISE212 dB SPL

DYNAMIC RANGE (typical) 112 dB, 1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO282 dB, 1 kHz at 1 Pa*

PHANTOM POWER 11-52V DC, 3.2 mA typical

REQUIREMENTS

SWITCH Flat, roll-off

WEIGHT (less accessories) 5.5 oz (155 g)

DIMENSIONS 15.55" (395.0 mm) long,

0.83" (21.0 mm) body diameter

ACCESSORIES FURNISHED AT8405a stand clamp for 5/8"-27

threaded stands; AT8135

windscreen; protective

carrying case

†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

1Measured at diaphragm

2Typical, 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

AT4071a LINE + GRADIENT CONDENSER MICROPHONE

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