Audio Technica At4047Mp Users Manual

at4047mp e904bd56-8473-4b67-979e-71dafda75cad Audio-Technica Microphone AT4047MP User Guide |

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40 series microphones

AT4047MP

Multi-Pattern Condenser Side-Address Microphone

Features

• Speciallyengineeredtomeetthemostcriticalacoustic

 requirementsofprofessionalrecording,broadcastandsound

 reinforcement

• Threeswitchablepolarpatterns:omnidirectional,cardioid,

 gure-of-eight

• Transformer-coupledoutputandspeciallytunedelementprovide

 soniccharacteristicsreminiscentofearlyF.E.T.studiomicrophone

 designs

• Exceptionallylowself-noise,widedynamicrangeandhigh

 SPLcapability

• Dual-diaphragmcapsuledesignmaintainsprecisepolarpattern

 denitionacrossthefullfrequencyrangeofthemicrophone

• Precision-machined,nickel-platedbrass,acousticelementbafe

 providesenhancedelementstabilityandoptimalsensitivity

• Vintagesilver-mattenishonmicrophoneandshockmount

• Openacousticalenvironmentofthesymmetricalhousing

 assemblyminimizesunwantedinternalreections

• Customshockmountprovidessuperiorisolation

• Integral80Hzhigh-passlterswitchand10dBpadswitch

• State-of-the-artdesignandmanufacturingtechniquesensure

 compliancewithA-T’sstringentconsistencyandreliabilitystandards

Description

The AT4047MP is a large-diaphragm side-address externally polarized

(DC bias) condenser microphone with three switchable polar patterns:

omnidirectional, cardioid, and gure-of-eight. It is designed to meet the

most critical acoustic requirements of professional recording, broadcast

and sound reinforcement.

The microphone requires 48V phantom power for operation.

The omnidirectional polar pattern is sensitive to sound coming from

all directions. Select the omni pattern to pick up several voices or

instruments on the same microphone, to diminish proximity effect, and

to preserve the location’s ambient sound.

The cardioid polar pattern is more sensitive to sound originating directly

in front of the element, making it useful in controlling feedback, reducing

pickup of unwanted sounds and providing isolation between performers.

The gure-of-eight polar pattern is more sensitive to sound originating in

the front and back of the microphone, rejecting sounds from the sides. It

is often used in conjunction with advanced stereo miking techniques.

The output of the microphone is a 3-pin XLRM-type connector.

The microphone is equipped with a switchable 10 dB pad and a switch

that permits choice of at response or low-frequency roll-off (via integral

80 Hz high-pass lter).

The microphone is enclosed in a rugged housing. The included AT8449/SV

shock mount provides superior isolation and permits mounting on any

microphone stand with 5/8"-27 threads. A dust cover and a protective

carrying case are also included.

Operation & Maintenance

The AT4047MP requires 48V phantom power for operation.

Output 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.

A raised Audio-Technica emblem and the pattern-selection switch are on

the front of the microphone. Position this side of the microphone toward

the sound source.

The pattern-selection switch provides user-selection of omnidirectional,

cardioid, and gure-of-eight polar patterns. To select the omnidirectional

polar pattern, slide the switch to the circular polar pattern image. To select

the cardioid polar pattern, slide the switch to the heart-shaped polar pattern

image. To select the gure-of-eight pattern, slide the switch to the gure-

eight shaped polar pattern image.

An integral 80 Hz high-pass lter provides easy switching from a at

frequency response to a low-end roll-off. The roll-off position reduces the

microphone’s sensitivity to popping in close vocal use. It also reduces

the pickup of low-frequency ambient noise (such as trafc, air-handling

systems, etc.), room reverberation and mechanically coupled vibrations. To

engage the high-pass lter, slide the switch toward the “bent” line.

The microphone is also equipped with a switchable 10 dB pad that lowers

the microphone’s sensitivity, thus providing higher SPL capability for

exible use with a wide range of users and system congurations. To

engage the 10 dB pad, slide the switch toward the -10 position.

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.

Architect’s and Engineer’s Specications

The microphone shall be a large-diaphragm side-address externally

polarized (DC bias) condenser with user-switchable omnidirectional,

cardioid, and gure-of-eight polar patterns and a frequency response of

20 Hz to 18,000 Hz. The microphone shall operate from an external 48V

DC phantom power source. It shall be capable of handling sound input

levels up to 155 dB (165 dB with 10 dB pad) with a dynamic range of 141

dB. Nominal open-circuit output voltage shall be 7.9 mV at 1V, 1 Pascal.

Output shall be low impedance balanced (100 ohms).

The output of the microphone shall be a 3-pin XLRM-type connector.

The microphone shall be equipped with a switchable 10 dB pad, a switch

that permits choice of at response or 80 Hz low-frequency roll-off and a

polar pattern selection switch.

The microphone shall be 188.0 mm (7.40") long and have a maximum

body diameter of 53.4 mm (2.10"). Weight shall be 524 g (18.5 oz). The

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

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

©2009 Audio-Technica U.S., Inc. audio-technica.com 0001-0258-00

AT4047MP

microphone shall include a shock mount, a dust cover and a protective

carrying case.

The Audio-Technica AT4047MP is specied.

Specications

cardioid frequency response:

20–18,000 Hz

gure-of-eight frequency

response: 20–18,000 Hz

omni frequency response:

20–18,000 Hz

LEGEND

200 Hz

1 kHz

5 kHz

8 kHz

SCALE IS 5 DECIBELS PER DIVISION

240˚

180˚

210˚

270˚

300˚

330˚ 0˚

150˚

120˚

90˚

30˚

60˚

12" or more on axis

LEGEND

Frequency in Hertz

Response in dB

10 dB

100

50 200 10k

5k

1k

500 2k 20k

Roll-off

LEGEND

200 Hz

1 kHz

5 kHz

8 kHz

SCALE IS 5 DECIBELS PER DIVISION

240˚

180˚

210˚

270˚

300˚

330˚ 0˚

150˚

120˚

90˚

30˚

60˚

12" or more on axis

LEGEND

Frequency in Hertz

Response in dB

10 dB

100

50 200 10k

5k

1k

500 2k 20k

Roll-off

LEGEND

200 Hz

1 kHz

5 kHz

8 kHz

SCALE IS 5 DECIBELS PER DIVISION

240˚

180˚

210˚

270˚

300˚

330˚ 0˚

150˚

120˚

90˚

30˚

60˚

12" or more on axis

LEGEND

Frequency in Hertz

Response in dB

10 dB

100

50 200 10k

5k

1k

500 2k 20k

Roll-off

cardioid polar pattern omni polar pattern

gure-of-eight polar pattern

Externally-polarized (DC bias) condenser

Cardioid, Omnidirectional, Figure-of-eight

20-18,000 Hz

80 Hz, 12 dB/octave

–42 dB (7.9 mV), re 1V at 1 Pa

100 ohms

155 dB SPL, 1 kHz at 1% T.H.D.;

165 dB SPL, with 10 dB pad (nominal)

14 dB SPL

141 dB, 1 kHz at Max SPL

80 dB, 1 kHz at 1 Pa

48V DC, 3.4 mA typical

Polar selection; Flat, roll-off;

10 dB pad (nominal)

524 g (18.5 oz)

188.0 mm (7.40") long,

53.4 mm (2.10") maximum body diameter

Integral 3-pin XLRM-type

R1

AT8449/SV shock mount for 5/8"-27

threaded stands; microphone dust cover;

protective carrying case

Element

Polar patterns

Frequency response

Low frequency roll-off

Open circuit sensitivity

Impedance

Maximum input sound level

Noise1

Dynamic range (typical)

Signal-to-noise ratio1

Phantom power requirements

Switches

Weight

Dimensions

Output connector

Audio-Technica case style

Accessories furnished

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

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

Specications are subject to change without notice.