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Model SM87A User Guide

27C2964 (Rev. 6)

Printed in U.S.A.

©2006, Shure Incorporated

SM87A

SUPERCARDIOID CONDENSER MICROPHONE

The  Shure  Model  SM87A  is  a  professional-quality,  hand-held 
condenser microphone for use in sound reinforcement, broadcasting, 
and  studio  recording  installations.  Its super-cardioid  polar  pattern 
provides  greater  rejection  of  unwanted  sound  sources,  making  it 
ideal for miking individual instruments in a multi-microphone setting 
or for miking single sources in a reverberant or noisy environment.

The  SM87A  features  a  controlled  low-frequency  roll-off  tailored 
for  optimum  performance  when  close-miking  sound  sources. 

An  integral  three-stage  wind  and  pop  filter  protects  against 

wind  and  breath  noise.  Its  built-in  shock  mount  reduces  stand 
and  handling  noise.  The  SM87A  operates  on  phantom  power.

FEATURES

Highly directional supercardioid pickup pattern

Controlled low-frequency roll-off

Very low RF and magnetic hum susceptibility

Minimally affected by varying load impedance

Built-in wind and pop filter

Transducer element shock mounted

Rugged construction for outstanding reliability

Field-usable over a wide range of temperature and 
humidity conditions

Accepts a wide variety of phantom power sources, 
including DIN 45 596 voltages of 11 and 52 Vdc

APPLICATION AND PLACEMENT

Some  of  the  most  common  applications  and  placement 
techniques  are  listed  in  the  following  table.  Keep  in  mind 
that  microphone  technique  is  largely  a  matter  of  person-
al  taste—there  is  no  one  “correct”  microphone  position.

SUGGESTED MICROPHONE 

PLACEMENT 

TONE QUALITY 

Lips less than 15 cm (6 in.) away 
or touching the windscreen, on 
axis to microphone. 

Robust sound, emphasized bass, 
maximum isolation from other 
sources. 

15 to 60 cm (6 in. to 2 ft.) away 
from mouth, just above nose 
height. 

Natural sound, reduced bass. 

20 to 60 cm (8 in. to 2 ft.) away 
from mouth, slightly off to one side. 

Natural sound, reduced bass and 
minimal ”s” sounds. 

.90 cm to 1.8 m (3 to 6 ft) away. 

Thinner, distant sound; noticeable 
levels of ambient noise.

GENERAL RULES FOR MICROPHONE USE

Aim the microphone toward the desired sound source and at 
a  125°  angle  away  from  unwanted  sources.  Don’t  place  un-
wanted  sound  sources  directly  to  the  rear  of  the  microphone 
since  supercardioid  microphones,  such  as  the  SM87A,  have 
a  narrow  pick  up  range  at  about  180°.  Refer  to  Figure  1. 

Place the microphone as close as practical to the desired 
sound source. Refer to the table above. 

Use only one microphone for each sound source. 

Keep the distance between microphones at least three times 
the distance from each source to its microphone. 

Place microphones as far as possible from reflective surfaces. 

Work close to the microphone for extra bass response. 

Use the fewest number of microphones as is practical. 

Add a windscreen when using the microphone outdoors. 

Avoid excessive handling to minimize pick up of mechanical 
noise and vibration.  

Do not cover any part of the grille with your hand. 

180

o

125

o

125

o

90

o

0

o

90

o

CORRECT

0

o

90

o

180

o

INCORRECT

CORRECT

125

o

90

o

0

o

180

o

90

o

90

o

POSITIONING UNWANTED SOUND SOURCES

FIGURE 1

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Содержание SM87A

Страница 1: ...ely a matter of person al taste there is no one correct microphone position SUGGESTED MICROPHONE PLACEMENT TONE QUALITY Lips less than 15 cm 6 in away or touching the windscreen on axis to microphone...

Страница 2: ...ohm Load 6 dBV 0 5 V Maximum SPL at 1 000 Hz 140 5 dB 0 25 THD 1000 ohm load Self Noise equivalent sound pressure level measured with true rms voltmeter 24 dB typical A weighted 26 dB typical weighted...

Страница 3: ...e l g rement sur un c t Son naturel graves r duits et sifflement minimum des s De 90 cm 1 8 m Son plus t nu distant niveau notable de bruit ambiant R gles g n rales d utilisation du microphone Diriger...

Страница 4: ...produit une tension positive sur la broche 2 par rapport la broche 3 Le rapport signal bruit est la diff rence entre le niveau de pression acous tique de 94 dB et le NPA quivalent du bruit propre pond...

Страница 5: ...r Seite versetzt Nat rlicher Klang verringerter Ba und minimale Zischlaute 90 cm bis 1 8 m entfernt D nnerer entfernter Klang wahrnehmbare Umgebungsge r usche Allgemeine Regeln f r den Mikrofongebrauc...

Страница 6: ...nalrauschabstand ist die Differenz zwischen 94 dB Schalldruckpegel und dem quivalenten Schalldruckpegel des Eigenrauschens mit Bewertung skurve A Stromversorgung Erforderliche Phantomspeisespannung 11...

Страница 7: ...amente a un lado de sta Sonido natural frecuencias bajas reducidas y pocos sonidos sibilantes De 90 cm a 1 8 m de distancia Sonido m s agudo y distante niveles perceptibles de sonido ambiental Reglas...

Страница 8: ...sitivo en la clavija 2 con respecto a la clavija 3 La relaci n de se al a ruido es la diferencia entre 94 dB SPL y el SPL equivalente del ruido inherente con ponderaci n A Alimentaci n Potencia fantas...

Страница 9: ...a un lato Suono naturale toni bassi ridotti eattenuazionedeisuonisibilanti Distanza da a 90 cm a 1 8 m Suono distante e affievolito livelli significativi di rumore ambientale Regole generali per l uso...

Страница 10: ...erenza tra 94 dB di livello di pressione sonora SPL e l equivalente SPL di rumore generato internamente e misurato con filtro di ponderazione A Polarit Una pressione positiva sul diaframma produce una...

Страница 11: ...o 90o 30o 60o 90o 5 dB 10 dB 15 dB 20 dB 0 500 Hz 1000 Hz 100 Hz 10000 Hz 3150 Hz 150o 120o 150o 120o 180o 30o 60o 90o 30o 60o 90o 5 dB 10 dB 15 dB 20 dB 0 TYPICAL POLAR PATTERN COURBE DE DIRECTIVIT T...

Страница 12: ...Caribbean 5800 W Touhy Avenue Niles IL 60714 4608 U S A Phone 847 600 2000 U S Fax 847 600 1212 Int l Fax 847 600 6446 Europe Middle East Africa Shure Europe GmbH Phone 49 7131 72140 Fax 49 7131 7214...

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