Audio-Technica BP4071L User manual

• Overalllengthof21.22"withanextremelynarrow,highly

 directionalpickuppattern

• Idealforuseinbroadcasting,film/TVproduction,andtheater

 soundreinforcement

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

 high-outputconditions

• Transformerlessdesignforimprovedpickupoftransients

• Ruggedhousingmadeoflightweightstructural-grade

 aluminumalloy

• Interferencetubedesignfornarrowacceptanceangle

• Switchable80Hzhigh-passfilter&10dBpad

• RoHS-compliant–freefromallsubstancesspecifiedintheEU

 directiveonthereductionofhazardoussubstances(RoHS)

TheBP4071L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

phantompowersupply.

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 roll-off

positionreducesthepickup of low-frequency ambient noise (such

astraffic, air-handling systems, etc.), room reverberation and

mechanicallycoupledvibrations.

TheBP4071Lisalsoequippedwithaswitchable10dBpadthat

lowersthemicrophone’ssensitivity, thus providing higher SPL

capabilityforflexible use for a wide range of speakers/performers

andsystemconfigurations.Toengagethe10dBpad,usetheend

tipofapapercliporothersmallpointedinstrumenttoslidetheswitch

towardthe-10position.

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

BP4071L

BP4071L SPECIFICATIONS

†

ELEMENT Externallypolarized(DCbias)

 capacitor

POLAR PATTERN Line+gradient

FREQUENCY RESPONSE 20-18,000Hz

LOW FREQUENCY ROLL-OFF 80Hz,12dB/octave

OPEN CIRCUIT SENSITIVITY –29dB(35.5mV)re1Vat1Pa*

IMPEDANCE 50ohms

MAXIMUM INPUT SOUND LEVEL 141dBSPL,1kHzat1%T.H.D.;

 151dBSPL,with10dBpad

 (nominal)

NOISE

 13dBSPL

DYNAMIC RANGE(typical) 128dB,1kHzatMaxSPL

SIGNAL-TO-NOISE RATIO

 81dB,1kHzat1Pa*

PHANTOM POWER REQUIREMENTS 48VDC,4.8mAtypical

SWITCHES Flat,roll-off;10dBpad(nominal)

WEIGHT (lessaccessories) 175g(6.2oz)

DIMENSIONS 539.0mm(21.22")long,

 21.0mm(0.83")maximumbody

 diameter

OUTPUT CONNECTOR Integral3-pinXLRM-type

ACCESSORIES FURNISHED AT8405astandclampfor

/8"-27

 threadedstands;

/8"-27to

/8"-16

 threadedadapter;AT8147

 windscreen;twoO-rings;

 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.

LINE + GRADIENT CONDENSER MICROPHONE

200 Hz

5 kHz

1 kHz

8 kHz

SCALE IS 5 DECIBELS PER DIVISION

Polar Pattern

LEGEND

12" or more on axis

LEGEND

Roll-off

Frequency in Hertz

Frequency Response

Response in dB

Audio-Technica BP4071L User manual

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