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  9. Audio Technica Broadcast & Production AT831b User manual

Audio Technica Broadcast & Production AT831b User manual

Fréquence - Hertz
LÉGENDE 12" ou plus sur l'axe
Pente de diminution
Réponse en Fréquence
Réponse - dB
8 kHz
200 Hz
1 kHz
5 kHz
Directivité
ÉCHELLE: 5 dB PAR DIVISION
LÉGENDE
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-
Technica Limited, Old Lane, Leeds LS11 8AG Angleterre
www.audio-technica.com
P51667-01 ©2006 Audio-Technica U.S., Inc. Imprimé au Japon
AT831b CARACTÉRISTIQUES TECHNIQUES†
TYPE Condensateur polarisé en
permanence avec plaque fixe à
charge fixe
DIRECTIVITÉ Cardioïde
RÉPONSE EN FRÉQUENCE 40-20 000 Hz
ATTÉNUATION DES GRAVES 80 Hz, 18 dB/octave
NIVEAU DE SORTIE –44 dB (6,3 mV) /
(Fantôme / Pile) –45 dB (5,6 mV) réf 1V/Pa*
IMPÉDANCE (Fantôme / Pile) 200 ohms / 270 ohms
NIVEAU DE PRESSION 135 dB / 121 dB SPL,
ACOUSTIQUE MAXIMAL 1 kHz à 1% T.H.D.
(Fantôme / Pile)
DYNAMIQUE (typique) 106 dB / 92 dB,
(Fantôme / Pile) 1 kHz à SPL max
RAPPORT SIGNAL/BRUIT165 dB, 1 kHz/Pa*
ALIMENTATION FANTÔME 11-52V CC, 2 mA typiques
TYPE DE PILE 1,5V AA/UM3
COURANT / DURÉE DE VIE 0,4 mA / 1200 heures typiques
DE LA PILE (alcaline)
COMMUTATEUR Off, on-plat, on-atténuation
POIDS (sans les accessoires)
MICROPHONE 2,8 g (0,1 oz)
MODULE D’ALIMENTATION 139 g (4,9 oz)
DIMENSIONS
MICROPHONE Longueur 25,0 mm (0,98 po),
diamètre 10,2 mm (0,40 po)
MODULE D’ALIMENTATION Hauteur 84,0 mm (3,31 po) x
largeur 63,0 mm (2,48 po) x
profondeur 22,0 mm (0,87 po)
CONNECTEUR DE SORTIE Type XLRM 3 broches intégré
(module d’alimentation)
CÂBLE Câble blindé à 2 conducteurs, de
2,6 mm de diamètre (0,10 po) et
1,8 m de long (6,0 pi) (solidaire
du microphone), avec connecteur
de sortie TA3F
ACCESSOIRES FOURNIS AT8417 pince pour habits;
AT8444 adaptateur pour
instrument; AT8531 module
d’alimentation; AT8116 bonnette
anti-vent en mousse; pile;
mallette portative de protection
†Afin de contribuer au développement des normes, A.T.U.S. fournit tout renseignement
sur ses méthodes de test aux professionnels de l’industrie qui en font la demande.
*1 Pascal = 10 dynes/cm2= 10 microbars = 94 dB SPL
1Typique, pondéré en A, mesuré avec l’Audio Precision System One.
Les caractéristiques techniques sont soumises à des changements sans préavis.
8 kHz
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
Frequency in Hertz
LEGEND 12" or more on axis
Roll-off
Frequency Response
Response in dB
• Clip-on lavalier mic provides crisp, full-sounding voice pickup
•Also excels as an instrument mic, especially for pickup of
acoustic guitar with included AT8444 guitar adapter
• Excellent gain before feedback and suppression of background
noise
• Switchable low-frequency roll-off
• Operates on battery or phantom power
For use as a lavalier, attach the microphone about six inches below
the chin. Anticipate movements that may cause the microphone to
rub against or be covered by clothing, and position the microphone
to avoid it.
The AT831b requires 11-52V DC phantom power, or a 1.5V AA
battery for operation. A battery need not be in place for phantom
power operation.
Battery installation: Remove the cap from the top of the power
module. Insert a fresh 1.5V AA battery (“+” end toward the
cap release button), then reassemble the power module. Alkaline
batteries are recommended for longest life. Remove the battery
during long-term storage.
Output from the power module’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 microphone’s sensitivity to popping in close vocal use.
It also reduces the pickup of low-frequency ambient noise (such
as traffic, air-handling systems, etc.), room reverberation and
mechanically coupled vibrations.
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.
AT831b SPECIFICATIONS†
ELEMENT Fixed-charge back plate
permanently polarized
condenser
POLAR PATTERN Cardioid
FREQUENCY RESPONSE 40-20,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY –44 dB (6.3 mV) /
(Phantom / Battery) –45 dB (5.6 mV) re 1V at 1 Pa*
IMPEDANCE (Phantom / Battery) 200 ohms / 270 ohms
MAXIMUM INPUT SOUND LEVEL 135 dB / 121 dB SPL,
(Phantom / Battery) 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical) 106 dB / 92 dB,
(Phantom / Battery) 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO165 dB, 1 kHz at 1 Pa*
PHANTOM POWER 11-52V DC, 2 mA typical
REQUIREMENTS
BATTERY TYPE 1.5V AA/UM3
BATTERY CURRENT / LIFE 0.4 mA / 1200 hours typical
(alkaline)
SWITCH Off, on-flat, on-roll-off
WEIGHT (less cable and accessories)
MICROPHONE 0.1 oz (2.8 g)
POWER MODULE 4.9 oz (139 g)
DIMENSIONS
MICROPHONE 0.98" (25.0 mm) long,
0.40" (10.2 mm) diameter
POWER MODULE 3.31" (84.0 mm) H x
2.48" (63.0 mm) W x
0.87" (22.0 mm) D
OUTPUT CONNECTOR Integral 3-pin XLRM-type
(power module)
CABLE 6' (1.8 m) long (permanently
attached to microphone), 0.10"
(2.6 mm) diameter, 2-conductor,
shielded cable with TA3F-type
connector
ACCESSORIES FURNISHED AT8417 clothing clip;
AT8444 instrument adapter;
AT8531 power module;
AT8116 windscreen; battery;
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/cm2= 10 microbars = 94 dB SPL
1Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-
Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51667-01 ©2006 Audio-Technica U.S., Inc. Printed in Japan
AT831b MINIATURE CARDIOID CONDENSER MICROPHONE
AT831b MICROPHONE À CONDENSATEUR CARDIOÏDE MINIATURE
• Micro-cravate à pince donnant amplitude et netteté à la voix
• Fournit d’excellents résultats également comme microphone pour
instruments ;à utiliser notamment avec la guitare acoustique,
avec son adaptateur pour guitare inclus AT8444
• Excellent gain avant accrochage et suppression des bruits
de fond
• Atténuation des graves commutable
• Fonctionne sur pile ou alimentation fantôme
Pour l’utiliser comme lavalier (micro-cravate), fixer le microphone à
environ quinze centimètres sous le menton. Positionnez-le de telle
sorte que lorsque la personne qui le porte bouge, il ne soit pas
recouvert pas les vêtements ou ne frotte pas contre eux.
Pour faire fonctionner l’AT831b, il faut soit une alimentation fantôme
de 11 à 52V CC, soit une pile de 1,5V AA. Quand on utilise une
alimentation fantôme, il n’est pas nécessaire de mettre une pile.
Installation de la pile : enlever le couvercle qui est sur le dessus
du module d’alimentation, insérez une pile neuve de 1,5 Volts,
de type AA (le + du coté du bouton d’ouverture du couvercle),
puis refermer le module d’alimentation. Il est conseillé d’utiliser des
piles alcalines car elles durent plus longtemps. Retirez la pile en
cas de non-utilisation prolongée.
La sortie du module d’alimentation est symétrique basse
impédance, elle se fait sur une embase XLRM 3 broches. Le signal
symétrique est entre les broches 2 et 3, le point chaud est en deux
(la tension positive sur le point chaud est générée par une pression
acoustique positive sur la capsule). La masse (blindage) est sur
la broche 1.
Pour éviter une annulation de la phase et un son de mauvaise
qualité, tous les câbles de micro doivent être raccordés de manière
consistante : broche 1 avec broche 1, etc.
Un filtre passe-haut 80 Hz intégré permet de passer facilement
de la réponse en fréquence plate à l’atténuation des graves.
La position passe-haut sert à rendre le microphone moins sensible
aux “pops” quand il est utilisé en proximité sur voix. Elle sert
également à réduire la sensibilité aux bruits ambiants de basse
fréquence (dus au trafic, aux installations de ventilation, etc.),
à la réverbération de la pièce et aux vibrations couplées
mécaniquement.
Evitez de laisser le microphone en plein soleil ou dans des endroits
où la température est supérieure à 43°C (110°F) pendant une
durée prolongée. Une trop forte humidité doit également être
évitée.
SCALE IS 5 DECIBELS PER DIVISION
Polar Pattern
200 Hz
LEGEND
5 kHz
1 kHz
8 kHz
12" or more on axis
LEGEND
Roll-off
Frequency in Hertz
Frequency Response
Response in dB
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51967 ©2007 Audio-Technica U.S., Inc. Printed in Japan
• Clip-on lavalier mic provides crisp, full-sounding voice pickup
• Also excels as an instrument mic, especially for pickup of
acoustic guitar with included AT8444 instrument adapter
• Excellent gain before feedback and suppression of background
noise
• UniSteep®filter provides a steep low-frequency attenuation to
improve sound pickup without affecting voice quality
• Operates on battery or phantom power
For use as a lavalier, attach the microphone about six inches below
the chin. Anticipate movements that may cause the microphone to
rub against or be covered by clothing, and position the microphone
to avoid it.
The AT831b requires 11-52V DC phantom power, or a 1.5V AA
battery for operation. A battery need not be in place for phantom
power operation.
Battery installation: Remove the cap from the top of the power
module. Insert a fresh 1.5V AA battery (“+” end toward the
cap release button), then reassemble the power module. Alkaline
batteries are recommended for longest life. Remove the battery
during long-term storage.
Output from the power module’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 UniSteep®filter provides easy switching
from a flat 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 traffic, air-handling systems, etc.), room reverberation
and mechanically coupled vibrations.
The microphone is RoHS compliant–free from all substances
specified in the EU directive on hazardous substances.
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.
AT831b SPECIFICATIONS†
ELEMENT Fixed-charge back plate
permanently polarized
condenser
POLAR PATTERN Cardioid
FREQUENCY RESPONSE 40-18,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY –44 dB (6.3 mV) /
(Phantom / Battery) –46 dB (5.0 mV) re 1V at 1 Pa*
IMPEDANCE (Phantom / Battery) 200 ohms / 270 ohms
MAXIMUM INPUT SOUND LEVEL 135 dB / 121 dB SPL,
(Phantom / Battery) 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical) 106 dB / 92 dB,
(Phantom / Battery) 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO165 dB, 1 kHz at 1 Pa*
PHANTOM POWER 11-52V DC, 2 mA typical
REQUIREMENTS
BATTERY TYPE 1.5V AA/UM3
BATTERY CURRENT / LIFE 0.4 mA / 1200 hours typical
(alkaline)
SWITCH Off, on-flat, on-roll-off
WEIGHT (less cable and accessories)
MICROPHONE 2.8 g (0.1 oz)
POWER MODULE 139 g (4.9 oz)
DIMENSIONS
MICROPHONE 25.0 mm (0.98") long,
10.2 mm (0.40") diameter
POWER MODULE 84.0 mm (3.31") H x
63.0 mm (2.48") W x
22.0 mm (0.87") D
OUTPUT CONNECTOR Integral 3-pin XLRM-type
(power module)
CABLE 1.8 m (6') long (permanently
attached to microphone),
2.6 mm ( 0.10") diameter,
2-conductor, shielded cable
with TA3F-type connector
ACCESSORIES FURNISHED AT8531 power module;
AT8417 clothing clip;
AT8444 instrument adapter;
AT8116 windscreen; battery;
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 2= 10 microbars = 94 dB SPL
1Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
AT831b MINIATURE CARDIOID
CONDENSER MICROPHONE

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