Shure BETA181 User guide

侧向拾音电容式话筒

사이드-어드레스 콘덴서 마이크

サイドアドレスコンデンサー型マイクロホン

Конденсаторный микрофон с боковым приемом

Micrófono de condensador de captación lateral

Microfono a condensatore con ripresa laterale

Von der Seite zu besprechendes Kondensatormikrofon

Microphone électrostatique à capture latérale

Side-Address Condenser Microphone

27A14482 (Rev. 1)

Printed in U.S.A.

Wired Microphones

BETA181

BETA 181

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3

Features

• PremierliveperformancemicrophonewithShure

quality,ruggedness,andreliability

• Compactpreampattachestofourinterchangeable

capsules

• WidedynamicrangeforuseinhighSPLenvironments

• Side-addressformallowsfordiscreetpositioningin

tightperformanceandrecordingsettings

• Innnovativelockingringprovidesasecureconnection

betweencapsuleandpreamp

• Hardenedsteelmeshgrilleresistsdenting,wear,and

abuse

• Compactdesign,under12cm(5in.),reducesstage

clutter

• Furnishedwithstandadapterandcarryingcase

Changing Capsules

Applications and Placement

General Rules for Use

• Aimthemicrophonetowardthedesiredsoundsource;angleunwantedsoundstowardits

null

point.

• Usethefewestamountofmicrophonesaspracticaltoincreasethe

Potential Acoustic Gain

andpreventfeedback.

• Followthe

3 to 1 Rule

byspacingeachmicrophonebyatleastthreetimesthedistancetoitssourcetoreduce

Phase Cancellation

.

• Placemicrophonesasfaraspossiblefromreflectivesurfacestoreduce

Comb Filtering

.

• Whenusingdirectionalmicrophones,workcloselytothemicrophoneforextrabassresponsetotakeadvantageof

Proximity Effect

.

• Avoidexcessivehandlingtominimizepickupofmechanicalnoiseandvibration.

• Donotcoveranypartofthemicrophonegrille,asthiswilladverselyaffectmicrophoneperformance.

• Addawindscreenwhenusingthemicrophoneoutdoors.

Variations

Beta 181/CCardioidMicrophone

General Description

TheShureBeta181isanultra-compact,side-address,

condensermicrophone,designedfordiscreetplace-

mentinliveandstudioenvironments.Featuringinter-

changeablecardioid,supercardioid,omnidirectionaland

bidirectionalcapsulesforsuperiorversatility,thesmall

diaphragmoftheBeta181providessuperioraudiowith

consistent,“textbook”polarresponsesinaformfactor

smallenoughtogetclosetothesourceinthetightest

conditions.

Performance Characteristics

• Exceptionallow-frequencyreproduction

• ExtremelyhighSPLhandling

• Highoutputlevel

• Nocrossoverdistortion

• Transformeroutput

Positioning the Microphone

ThefrontofthemicrophoneismarkedbytheShurelogoonthepreampandthe

polarpatternicononthecapsule.Positionthissidetowardthesoundsource.

BETA 181

FollowthesestepstochangeBeta181capsules:

KNURLED RING

ALIGNMENT KEY

ALIGNMENT GROOVE

1. Turnoffphantompoweranddisconnectfrom

equipment.

2. Unscrewthecapsule’sknurledringtodetachthe

preamp.

3. Slidethealignmentkeyonthebottomofthecapsule

intothegrooveonthepreamptoensurethatthe

Shurelogodisplaysthefrontofthemicrophone.

4. Tightentheknurledringtosecurelyreconnectthe

microphone.

Thefollowingtableliststhemostcommonapplicationsandplacementtechniques.Keepinmindthatmicrophonetech-

niqueislargelyamatterofpersonaltaste;thereisnoone“correct”microphoneposition.

BETA 181

Cardioid Supercardioid Omnidirectional Bidirectional

• Drumoverheads

• Piano

• Acousticinstruments

• PairwithaBeta181/BI

forM/Sstereotechnique

• Close-mikingin

performancesettings

• Snaredrum

• Acousticinstruments

• Roomandambient

pickup

• Monodrumoverhead

• Stringensembles

• UseapairofBeta181/

BIforBlumleinstereo

teqhnique

• Monodrumoverhead

• Dualsoundsources,such

asbetweentom-tomsor

acousticinstruments

Note: Aswithallbidirectionalmicrophones,soundspickedupfromthebackwillbeoutofpolaritywiththesource.

Thosefromthefrontareinpolaritywiththesource.

Beta 181/SSupercardioidMicrophone

Beta 181/OOmnidirectionalMicrophone

Beta 181/BIBidirectionalMicrophone

NOTE:Beforeeachuse,makesurethecapsuleistightly

securedonthemicrophone,asvibrationandaccidental

hitswithdrumsticksmayloosenit,resultinginsignalloss.

4

Accessories and Parts

Avoiding Pickup of Unwanted Sound Sources

Directionalmicrophonesaremostsensitivetosoundsarrivingonaxisandrejectatanglesdependinguponthepolarpattern.Thefollowingchartshowstherejectionanglesofeach

microphone.Inliveperformanceorrecordingsettings,alignmonitors,P.A.loudspeakers,andunwantedsoundsourcesattheseangles.

Tominimizefeedbackandensureoptimumrejectionofunwantedsound,alwaystestmicrophoneplacementbeforeaperformance.

Cardioid Supercardioid Bidirectional

Off-axisnullpointsat180degrees Off-axisnullpointsat120degrees Off-axisnullpointsat90degress

CERTIFICATION

EligibletobearCEMarking.ConformstoEuropeanEMC

Directive2004/108/EC.MeetsHarmonizedStandards

EN55103-1:1996andEN55103-2:1996,forresidential

(E1)andlightindustrial(E2)environments.

TheDeclarationofConformitycanbeobtainedfrom:

AuthorizedEuropeanrepresentative:

ShureEuropeGmbH

HeadquartersEurope,MiddleEast&Africa

Department:EMEAApproval

WannenackerStr.28

D-74078Heilbronn,Germany

Phone:+49713172140

Fax:+497131721414

Email:[email protected]

Power Requirements

Thismicrophonerequiresphantompowerandperforms

bestwitha48Vdcsupply(IEC-61938).However,itwill

operatewithslightlydecreasedheadroomandsensitivity

withsuppliesaslowas11Vdc.

Mostmodernmixersprovidephantompower.Youmust

useabalancedmicrophonecable:XLR-to-XLRor

XLR-to-TRS.

Load Impedance

MaximumSPLcapability,outputclippinglevel,anddy-

namicrangevarywiththeinputloadimpedanceofthe

preamplifiertowhichyouconnectthemicrophone.Shure

recommendsaminimuminputloadimpedanceof1000

Ω.Mostmodernmicrophonepreamplifiersmeetthis

requirement.Higherimpedanceresultsinbetterperfor-

manceforthesespecifications.

124,46 mm

(4.90 in.)

20,32 mm

(0.80 in.)

34,54 mm

(1.36 in.)

Furnished Accessories

MicClip A57F

ZipperedCarryingCase A181C

Windscreen A181WS

Optional Accessories

CardioidCapsule RPM181/C

SupercardioidCapsule RPM181/S

BidirectionalCapsule RPM181/BI

OmnidirectionalCapsule RPM181/O

Beta181Preamp RPM181/PRE

UniversalMicrophoneMount A75M

ShockStopper™IsolationMount A53M

7.6m(25ft.)Cable C25E

Note: Informationinthisguideissubjecttochange

withoutnotice.Fortheadditionalinformationaboutthis

product,pleasevisitwww.shure.com.

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21

Caractéristiques

Type de capsule

Condensateuràélectret

Courbe de directivité

181/C: Cardioïde

181/S: Supercardioïde

181/O: Omnidirectionnel

181/BI: Bidirectionnel

Réponse en fréquence

20à20,000Hz

Impédance de sortie

110Ω

Sensibilité

tensionencircuitouvert,à1

kHz,typique

Cardioïde: –46.5dBV/Pa

[1]

(4.7mV)

Supercardioïde: –49.5dBV/Pa

[1]

(3.4mV)

Omnidirectionnel: –52.0dBV/Pa

[1]

(2.5mV)

Bidirectionnel: –51.0dBV/Pa

[1]

(2.8mV)

SPL maximum

1kHzavecDHTde1%

[2]

Charge de 2500 Ω:

Cardioïde: 151.5dBSPL

Supercardioïde: 154.5dBSPL

Omnidirectionnel: 157.0dBSPL

Bidirectionnel: 156.0dBSPL

Charge de 1000 Ω:

Cardioïde: 149.0dBSPL

Supercardioïde: 152.0dBSPL

Omnidirectionnel: 154.0dBSPL

Bidirectionnel: 153.5dBSPL

Rapport signal/bruit

[3]

Cardioïde: 73.5dB

Supercardioïde: 71.5dB

Omnidirectionnel: 70.5dB

Bidirectionnel: 71.0dB

Plage dynamique Charge de 2500 Ω:

Cardioïde: 131.0dB

Supercardioïde: 132.0dB

Omnidirectionnel: 133.5dB

Bidirectionnel: 133.0dB

Charge de 1000 Ω:

Cardioïde: 128.5dB

Supercardioïde: 129.5dB

Omnidirectionnel: 130.5dB

Bidirectionnel: 130.5dB

Niveau d’écrêtage

à1kHz,DHTde1%

Chargede2500Ω: 10.5dBV

Chargede1000Ω: 7.5dBV

Bruit propre

équivalentSPL,pondéréen

A,typique

Cardioïde: 20.5dBSPL-A

Supercardioïde: 22.5dBSPL-A

Omnidirectionnel: 23.5dBSPL-A

Bidirectionnel: 23.0dBSPL-A

Rejet en mode commun

20à20,000kHz

≥55dB

Polarité

Unepressionacoustiquepositivesurlediaphragmeproduitune

tensionpositivesurlabroche2parrapportàlabroche3.

Alimentation

11–52Vc.c.

[4]

alimentationfantôme(IEC-61938)

2.4mA,maximum

Poids Net

145g(5.1oz)

[1]

1Pa=94dBSPL

[2]

LaDHTdupréamplificateurdumicrophoneappliquéeauniveaudusignald’entréeestéquivalente

auniveaudesortiedelacapsulepourlavaleurSPLspécifiée.

[3]

Lerapportsignal/bruitestladifférenceentreleniveauSPLde94dBetleniveauSPLéquivalent

dubruitproprepondéréA.

[4]

Touteslescaractéristiquestechniquesontétémesuréesavecunesourced’alimentationfantôme

de48Vc.c.Lemicrophonefonctionneàdestensionsplusbassesmaisauprixd’uneplagedy-

namiqueetd’unesensibilitélégèrementréduites.

SPECIFICATIONS

Cartridge Type

ElectretCondenser

Polar Pattern

181/C: Cardioid

181/S: Supercardioid

181/O: Omnidirectional

181/BI: Bidirectional

Frequency Response

20to20,000Hz

Output Impedance

110Ω

Sensitivity

opencircuitvoltage,@

1kHz,typical

Cardioid: –46.5dBV/Pa

[1]

(4.7mV)

Supercardioid: –49.5dBV/Pa

[1]

(3.4mV)

Omnidirectional: –52.0dBV/Pa

[1]

(2.5mV)

Bidirectional: –51.0dBV/Pa

[1]

(2.8mV)

Maximum SPL

1kHzat1%THD

[2]

2500 Ω load:

Cardioid: 151.5dBSPL

Supercardioid: 154.5dBSPL

Omnidirectional: 157.0dBSPL

Bidirectional: 156.0dBSPL

1000 Ω load:

Cardioid: 149.0dBSPL

Supercardioid: 152.0dBSPL

Omnidirectional: 154.0dBSPL

Bidirectional: 153.5dBSPL

Signal-to-Noise

Ratio

[3]

Cardioid: 73.5dB

Supercardioid: 71.5dB

Omnidirectional: 70.5dB

Bidirectional: 71.0dB

Dynamic Range 2500 Ω load:

Cardioid: 131.0dB

Supercardioid: 132.0dB

Omnidirectional: 133.5dB

Bidirectional: 133.0dB

1000 Ω load:

Cardioid: 128.5dB

Supercardioid: 129.5dB

Omnidirectional: 130.5dB

Bidirectional: 130.5dB

Clipping Level

@1kHz,1%THD

2500Ωload: 10.5dBV

1000Ωload: 7.5dBV

Self Noise

equivalentSPL,

A-weighted,typical

Cardioid: 20.5dBSPL-A

Supercardioid: 22.5dBSPL-A

Omnidirectional: 23.5dBSPL-A

Bidirectional: 23.0dBSPL-A

Common Mode

Rejection

20to20,000kHz

≥55dB

Polarity

Positivepressureondiaphragmproducespositivevoltageonpin2with

respecttopin3

Power Requirements

11–52VDC

[4]

phantompower(IEC-61938)

2.4mA,maximum

Net Weight

145g(5.1oz.)

[1]

1Pa=94dBSPL

[2]

THDofmicrophonepreamplifierwhenappliedinputsignallevelisequivalenttocartridgeoutput

atspecifiedSPL

[3]

S/Nratioisthedifferencebetween94dBSPLandequivalentSPLofselfnoise,A-weighted

[4]

Allspecificationsmeasuredwitha48Vdcphantompowersupply.Themicrophoneoperatesat

lowervoltages,butwithslightlydecreasedheadroomandsensitivity.

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www.shure.com

Asia, Pacific:

Shure Asia Limited

22/F, 625 King’s Road

North Point, Island East

Hong Kong

Phone: 852-2893-4290

Fax: 852-2893-4055

Email: [email protected]

United States, Canada, Latin

America, Caribbean:

Shure Incorporated

5800 West Touhy Avenue

Niles, IL 60714-4608 USA

Phone: 847-600-2000

Fax: 847-600-1212 (USA)

Fax: 847-600-6446

Email: [email protected]

Europe, Middle East, Africa:

Shure Europe GmbH

Jakob-Dieffenbacher-Str. 12,

75031 Eppingen, Germany

Phone: 49-7262-92490

Fax: 49-7262-9249114

Email: [email protected]

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