Audio Technica At4050 Users Manual AT4050_english

at40502 1d33f901-66e4-4944-89e0-0c309c11bf53 Audio-Technica Microphone at4050 User Guide |

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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, 1 kHz at 1% T.H.D.;
159 dB SPL, with 10 dB
pad (nominal)

NOISE1

17 dB SPL

DYNAMIC RANGE (typical)

132 dB, 1 kHz at Max SPL

1

• 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

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 2 = 10 microbars = 94 dB SPL
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
Polar Pattern (Cardioid)

Frequency Response (Cardioid)

0
330

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.

30

300

60

240

120

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.

210

150

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.

500

200

5k

2k

1k

10k

20k

Frequency Response (Omni)

0
330

30

60

90

270

240

10 dB

10 dB

120

210

150

50

100

200

500

1k

5k

2k

10k

20k

180

SCALE IS 5 DECIBELS PER DIVISION

LEGEND
200 Hz
1 kHz
5 kHz
8 kHz

same as 1 kHz

Polar Pattern (Fig. Eight)

Frequency Response (Fig. Eight)

0
30

300

60

90

270

240

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.

100

Polar Pattern (Omni)

330

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.

50

180

300

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

10 dB

90

270

Response in dB

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

48V DC, 4.2 mA typical

Response in dB

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

77 dB, 1 kHz at 1 Pa*

PHANTOM POWER
REQUIREMENTS

Response in dB

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

SIGNAL-TO-NOISE RATIO

120

210

150

50

100

200

500

1k

2k

5k

10k

20k

180

Frequency in Hertz

SCALE IS 5 DECIBELS PER DIVISION

LEGEND
200 Hz
1 kHz
5 kHz
8 kHz

same as 1 kHz

LEGEND

same as 1 kHz
same as 1 kHz

12" or more on axis
Roll-off

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51460-EN

©2002 Audio-Technica U.S., Inc.

Printed in U.S.A.



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