Audio-Technica AT4050 User Manual

Frequency Response (Cardioid)

Response in dB

10 dB

200100

500

20k

10k

• Transparent uppers/mids balanced by rich low-end qualities combine with advanced acoustic engineering for extensive performance capabilities and highest quality

• Dual-diaphragm capsule design maintains precise polar pattern definition across the full frequency range of the microphone

• Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients

• Open acoustical environment of the symmetrical housing assembly minimizes unwanted internal reflections

• State-of-the-art surface-mount electronics ensure compliance with A-T’s stringent consistency and reliability standards

The AT4050 is intended for use in professional applications where remote power is available. It requires 48V 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 singlechannel and 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.

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

An integral 80 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. The high-pass position reduces the microphone’s sensitivity to popping in close vocal use. It also reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.

In use, secure the cable to the mic stand or boom, leaving a slack loop at the mic. This will ensure the most effective shock isolation and reduce the possibility of accidentally pulling the microphone out of its mount.

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

AT4050

MULTI-PATTERN CONDENSER MICROPHONE

AT4050 SPECIFICATIONS

†

ELEMENT Externally polarized (DC bias)

condenser

POLAR PATTERN Cardioid, Omnidirectional,

Figure-of-eight

FREQUENCY RESPONSE 20-18,000 Hz LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave OPEN CIRCUIT SENSITIVITY –36 dB (15.8 mV) re 1V at 1 Pa* IMPEDANCE 100 ohms MAXIMUM INPUT SOUND LEVEL 149 dB SPL,1kHzat1%T.H.D.;

159 dB SPL, with 10 dB pad (nominal)

NOISE

17 dB SPL

DYNAMIC RANGE (typical) 132 dB, 1 kHz at Max SPL SIGNAL-TO-NOISE RATIO

77 dB, 1 kHz at 1 Pa*

PHANTOM POWER 48V DC, 4.2 mA typical REQUIREMENTS

SWITCHES Pattern selection; flat, roll-off;

10 dB pad (nominal)

WEIGHT (less accessories) 18.0 oz (510 g) DIMENSIONS 7.40" (188.0 mm) long, 2.10"

(53.4 mm) maximum body diameter

OUTPUT CONNECTOR Integral 3-pin XLRM-type ACCESSORIES FURNISHED AT8449 shock mount for 5/8"-27

threaded stands; microphone dust cover; 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/cm

= 10 microbars = 94 dB SPL

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

Specifications are subject to change without notice.

Polar Pattern (Cardioid)

180

270

240

210

300

330

150

120

SCALE IS 5 DECIBELS PER DIVISION

1 kHz

LEGEND

8 kHz

5 kHz

240

210

180

150

120

330

270

300

Polar Pattern (Omni)

200 Hz

same as 1 kHz

SCALE IS 5 DECIBELS PER DIVISION

1 kHz

200 Hz

LEGEND

8 kHz

5 kHz

240

210

180

150

120

330

270

300

Polar Pattern (Fig. Eight)

same as 1 kHz same as 1 kHz

same as 1 kHz

Response in dB

10 dB

Frequency Response (Omni)

100

500

200

10k

20k

12" or more on axis Roll-off

LEGEND

Response in dB

10 dB

Frequency Response (Fig. Eight)

Frequency in Hertz

100 200

500

20k

10k