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Shure mikrofon Beta 58A

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Model BETA 58A® User Guide
©2005, Shure Incorporated
27C2796 (Rev. 5) Printed in U.S.A.
MODEL BETA 58A® SUPERCARDIOID DYNAMIC
VOCAL MICROPHONE
GENERAL
The Shure BETA 58A is a high-output, supercardioid dynamic vo-
cal microphone for professional sound reinforcement and project
studio recording. It maintains a true supercardioid pattern through-
out its frequency range. This ensures high gain before feedback,
maximum isolation from other sound sources, and minimum off-
axis tone coloration.
The BETA 58A has a shaped frequency response that is ideal for
close-up vocals. The superb performance of this microphone is not
affected by rough handling because of its rugged construction,
proven shock mount system, and hardened steel mesh grille. Typ-
ical applications for the BETA 58A include lead vocals, backup vo-
cals and speech.
FEATURES:
�Frequency response tailored for vocals, with brightened
midrange and bass rolloff to control proximity effect
�Uniform supercardioid pattern for high gain before
feedback and superior rejection of off-axis sound
�Neodymium magnet for high signal-to-noise output
�Hardened steel mesh grille that resists wear and abuse
�Advanced pneumatic shock mount system that minimizes
transmission of mechanical noise and vibration
�Minimally affected by varying load impedance
�Legendary Shure quality and reliability
APPLICATION AND PLACEMENT
The BETA 58A is designed for close-up vocals, and can be hand
held or mounted on a stand. Some of the most common applica-
tions and placement techniques are listed in the following table.
Keep in mind that microphone technique is largely a matter of per-
sonal taste; there is no one "correct" microphone position.
GENERAL RULES FOR MICROPHONE USE
�Aim the microphone toward the desired sound source and
away from unwanted sources. Since supercardioid
microphones such as the BETA 58A have narrow pickup
patterns and can pick up sounds from the rear, this may
not be obvious or intuitive.
�Place the microphone as close as practical to the desired
sound source. Refer to the table above.
�Work close to the microphone for extra bass response.
�Use only one microphone to pick up one sound source.
�Keep the distance between microphones at least three
times the distance from each source to its microphone.
�Use the fewest number of microphones as is practical.
�Place microphones as far as possible from reflective
surfaces.
�Add a windscreen when using the microphone outdoors.
�Avoid excessive handling to minimize pickup of
mechanical noise and vibration.
�Do not cover any part of the grille with your hand.
PROXIMITY EFFECT
Unidirectional microphones such as the BETA 58A progressively
boost bass frequencies by 6 to 10 dB at 100 Hz when the micro-
phone is at a distance of about 6 mm (1/4 in.) from the sound
source. This phenomenon, known as proximity effect, can be used
to create a warmer, more powerful sound. To prevent explosive low
frequency sound during close-up use, the BETA 58A bass re-
sponse gradually rolls off. This provides greater control and helps
the user take advantage of proximity effect.
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.
2
STAGE MONITOR & P.A. LOUDSPEAKER PLACEMENT
For maximum rejection of unwanted sound, place the stage moni-
tor(s) or P.A. system loudspeaker at a 60 angle from the rear of °
the BETA 58A, not directly behind it. Always check out the stage
setup before a performance to ensure that microphone and moni-
tor placement is optimum.
SPECIFICATIONS
Type
Dynamic (moving coil)
Frequency Response
50 to 16,000 Hz
NOTE: The curve below shows on-axis response at a distance of 2
feet from a uniform sound source. Your response may vary, depend-
ing on microphone position.
Polar Pattern
Supercardioid, rotationally symmetrical about microphone axis,
uniform with frequency
Output Level (at 1,000 Hz)
Open Circuit Voltage: -51.5 dBV/Pa* (2.6 mV)
*1 Pa = 94 dB SPL
Impedance
Rated impedance is 150 Ω (290 Ω actual) for connection to micro-
phone inputs rated low Z
Phasing
Positive pressure on diaphragm produces positive voltage on
pin 2 with respect to pin 3
Case
Silver blue enamel-painted die cast metal with hardened, matte-
finished, spherical steel mesh grille
Adjustable, Stand Adapter
Slip-in microphone mounting, unbreakable, adjustable through
180 with standard 5/8"-27 thread, black finish °
Dimensions
Net Weight
278 grams (9.92 oz)
Certification
Eligible to bear CE Marking. Conforms to European EMC Direc-
tive 89/336/EEC. Meets applicable tests and performance crite-
ria in European Standard EN55103 (1996) parts 1 and 2, for
residential (E1) and light industrial (E2) environments.
FURNISHED ACCESSORIES
Adjustable Stand Adapter ...................................... A25D
5/8" to 3/8" (Euro) Thread Adapter ...................95A2050
Storage Bag..........................................................26A21
OPTIONAL ACCESSORIES
Windscreen...............A58WS Series (8 colors available)
Isolation Mount.........................................A55M, A55HM
7.6 m (25 ft.) Cable ......................................C25E, C25F
REPLACEMENT PARTS
Cartridge.................................................................R176
Grille Assembly..................................................RK265G
Plug (Connector) Assembly .............................. 90F1984
180°
120°120°
90°
0°
P.A. SYSTEM
LOUDSPEAKER
MONITOR
LOUDSPEAKER(S)
RECOMMENDED LOUDSPEAKER LOCATIONS
20 200001000 1000050 100 98765432 98765432
+10
0
–10
Hz
dB
-20
+20
3 mm (1/8 in)
25 mm (1 in)
51 mm (2 in)
606 mm (2 ft)
TYPICAL FREQUENCY RESPONSE
150°
120°
150°
120°
180°
30°
60°
90°
30°
60°
0
90°
–10 dB
–20 dB
–15 dB
–5 dB
150°
120°
150°
120°
180°
30°
60°
90°
30°
60°
0
90°
–10 dB
–20 dB
–15 dB
–5 dB
500 Hz
1000 Hz
250 Hz
6300 Hz
10000 Hz
2500 Hz
TYPICAL POLAR PATTERNS
GREEN
YELLOW
RED
BLUE
INTERNAL WIRING
160 mm
(6.5 in.)
50 mm
(2 in.)
OVERALL DIMENSIONS
3
MOD LE BETA 58AÈ® MICROPHONE VOCAL
DYNAMIQUE SUPERCARDIO DEÏ
G N RALIT SÉ É É
Le Shure BETA 58A est un microphone vocal dynamique super-
cardio de con u pour la sonorisation professionnelle et les enre-ï ç
gistrements en studio. Il maintient une configuration
supercardio de rï éelle dans toute sa gamme de fréquences. Ceci
assure un gain élev avant Larsen, une isolation maximum des é
autres sources sonores et un minimum de coloration de tonalit é
hors axe.
La courbe de r ponse du BETA 58A est id ale pour la prise de son é é
vocale de pr s. Gr ce sa construction robuste, sa monture anti-è â à
choc prouv e et sa grille en acier tremp , il peut tre malmen é é é ê é
sans que sa performance exceptionnelle soit affectée. La sonori-
sation des chanteurs et choristes est l'une des applications typi-
ques du BETA 58A.
AVANTAGES
�Gamme de fr quences adapt e la voix avec m diumsé é à é
extra/clairs et limiteur de basses
�Configuration cardio de uniforme pour un gain ï élev avanté
Larsen et rejet sup rieur des sons hors axe Aimant aué
n odymium pour un rapport signal/bruit lev Grille ené é é
acier trempé é r sistante l'usure et aux mauvaisà
traitements
�Syst me antichocs pneumatique avancè é é r duisant la
transmission des bruits m caniques et des vibrationsé
�Faible sensibilit aux changements d'imp dance deé é
charge
�Qualit et fiabilit l gendaires de Shureé é é
APPLICATIONS ET PLACEMENT
Le BETA 58A est con u pour la prise de son vocale de pr s et peut ç è
être tenu la main ou mont sur pied. Quelques-unes des appli-à é
cations et techniques de placement les plus courantes sont expli-
qu es dans le tableau ci-dessous. Ne pas oublier que la technique é
de placement des micros est surtout une question de go t person-û
nel et qu'il n'y a pas de position "correcte".
R GLES G NÈ É ÉRALES D'UTILISATION DE MICROPHONES
�Diriger le micro vers la source sonore, le plus loin possible
des bruits ind sirables. Les angles de captage desé
microphones supercardio des tels que le BETA 58A tantï é
étroits, les bruits de l'arri re peuvent tre capt s et leè ê é
positionnement peut ne pas tre vident.ê é
�Placer le microphone aussi pr s que possible de la sourceè
sonore. Voir le tableau ci-dessus.
�Plus la source sonore est proche du micro, plus les basses
sont pr sentes.é
�N'utiliser qu'un microphone par source sonore.
�La distance entre les microphones doit tre d'au moinsê
trois fois celle de chaque micro sa source sonoreà
respective.
�Utiliser le moins de microphones possible.
�Placer les microphones aussi loin que possible des
surfaces r flé échissantes.
�Utiliser un coupe-vent si les microphones sont utilis s é à
l'ext rieur.é
�Éviter les manipulations inutiles pour minimiser le captage
des bruits m caniques et des vibrations.é
�Ne couvrir aucune partie de la grille avec la main.
EFFET DE PROXIMITÉ
Les microphones unidirectionnels tels que le BETA 58A poussent
progressivement les basses fr quences de 6 10 dB 100 Hz é à à
lorsqu'ils sont plac s é à environ 6 mm de la source sonore. Ce phé-
nom ne, connu sous le nom d'effet de proximit peut tre utilis è é ê é
pour cr er un son plus chaud et plus puissant. Pour é éviter les sons
explosifs de basse fréquence lorsque le microphone est utilisé de
pr s, la r ponse de basses fr quences du BETA 58A est progres-è é é
sivement att nué ée. Ceci assure un meilleur contr le et permet ô à
l'utilisateur de mieux tirer parti de l'effet de proximit .é
DISPOSITION DES RETOURS DE SCÈNE ET DES HAUTS-
PARLEURS DE SONORISATION
Pour un réjet maximal des sons ind sirables, placer les retours ou é
les haut-parleurs 60 par rapport au microphone BETA 58A pas à °
directement derri re. Toujours examiner la mise en place de la è
sc ne pour s'assurer que la disposition des microphones et haut-è
parleurs est optimale.
PLACEMENT SUGG R SONORITÉ É É
L vres moins de 15 cm ou è à
touchant le coupe-vent, dans l'axe
du micro.
Son robuste, basses accentu es, é
isolation maximum d'autres
sources sonores.
15 60 cm de la bouche, juste à
audessus de la base du nez. Sonorit naturelle, basses é
r duites.é
20 60 cm de la bouche à
l g rment hors axe.é è Sonorit naturelle, basses é
r duites, sifflements des "s" é
minimum.
90 cm 1,8 m de distance. Petit son, distant, pr sence à é
notable de bruits de fond.
180°
120°120°
90°
0°
HAUT-PARLEURS
DE SONORISATION
RETOUR(S)
PLACEMENT RECOMMAND POUR LES É
HAUT-PARLEURS

Produktspecifikationer

Varumärke: Shure
Kategori: mikrofon
Modell: Beta 58A

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