Audio-technica AT4051B User Manual [ru]
AT4051b
Cardioid Condenser End-Address Microphone
Features
• Specially engineered to meet the most critical acoustic
requirements of professional recording, broadcast and sound
reinforcement
• Direct-coupled, balanced output results in a clean signal even
under high-output conditions
• Transformerless circuitry virtually eliminates low-frequency
distortion and provides superior correlation of high-speed
transients
• Cardioid polar pattern reduces pickup of sounds from the sides
and rear, improving isolation of desired sound source
• Rugged turned-brass microphone housing for enduring
dependability
• Integral 80 Hz high-pass lter switch and 10 dB pad switch
• State-of-the-art design and manufacturing techniques ensure
compliance with A-T’s stringent consistency and reliability
standards
40 series studio microphones
Operation and Maintenance
The AT4051b requires 48V phantom power for operation.
Output 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 lter provides easy switching from a at
frequency response to a low-end roll-off. The roll-off position reduces
the pickup of low-frequency ambient noise (such as trafc, air-handling
systems, etc.), room reverberation and mechanically-coupled vibrations.
To engage the high-pass lter, slide the switch toward the “bent” line.
The microphone is also equipped with a switchable 10 dB pad that lowers
the microphone’s sensitivity, thus providing higher SPL capability for
exible use with a wide range of users and system congurations. To
engage the 10 dB pad, 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.
Description
The AT4051b is an externally polarized (DC bias) condenser microphone
with a cardioid polar pattern. It is designed to meet the most critical
acoustic requirements of professional recording, broadcast and sound
reinforcement.
The AT4051b consists of two modular subassemblies: an AT4900b-48
body and an AT4051b-EL head capsule (both available separately).
Additional interchangeable capsules with omnidirectional (AT4049b-EL)
and hypercardioid (AT4053b-EL) pickup patterns are available.
The microphone requires 48V phantom power for operation.
The cardioid polar pattern of the microphone is more sensitive to sound
originating directly in front of the element, making it useful for controlling
feedback and reducing pickup of unwanted sounds.
The output of the microphone is a 3-pin XLRM-type connector.
The microphone is equipped with a switchable 10 dB pad and a switch
that permits choice of at response or low-frequency roll-off (via integral
80 Hz high-pass lter).
The microphone is enclosed in a rugged housing. The included AT8405a
stand clamp permits mounting on any microphone stand with 5/8"-27
threads. A windscreen and a protective carrying case are also included.
AT4051b
To reduce the environmental impact of a multi-language printed document, product information
is available online at www.audio-technica.com in a selection of languages.
An de réduire l’impact sur l’environnement de l’impression de plusieurs langues, les
informations concernant les produits sont disponibles sur le site www.audio-technica.com dans
une large sélection de langue.
Para reducir el impacto al medioambiente, y reducir la producción de documentos en varios
leguajes, información de nuestros productos están disponibles en nuestra página del Internet:
www.audio-technica.com.
Para reduzir o impacto ecológico de um documento impresso de várias linguas, a Audio-Technica
providência as informações dos seus produtos em diversas linguas na www.audio-technica.com.
Per evitare l’impatto ambientale che la stampa di questo documento determinerebbe, le
informazioni sui prodotti sono disponibili online in diverse lingue sul sito www.audio-technica.com.
Der Umwelt zuliebe nden Sie die Produktinformationen in deutscher Sprache und weiteren
Sprachen auf unserer Homepage: www.audio-technica.com.
Om de gevolgen van een gedrukte meertalige handleiding op het milieu te verkleinen, is
productinformatie in verschillende talen “on-line” beschikbaar op: www.audio-technica.com.
www.audio-technica.com
本公司基于减少对环境的影响，将不作多语言文檔的印刷，有关产品信息可在
www.audio-technica.com的官方网页上选择所属语言和浏览。
Specications
Element
Polar pattern
Frequency response
Low frequency roll-off
Open circuit sensitivity
Impedance
Maximum input sound level
Noise
Dynamic range (typical)
Signal-to-noise ratio1
Phantom power requirements
Switches
Weight
Dimensions
Output connector
Optional interchangeable capsules
Audio-Technica case style
Accessories furnished
In the interest of standards development, A.T.U.S.
offers full details on its test methods to other industry
1 Pascal = 10 dynes/cm
1
Typical, A-weighted, using Audio Precision System One.
Specications are subject to change without notice.
professionals on request.
2
= 10 microbars = 94 dB SPL
Externally polarized (DC bias) condenser
Cardioid
20-20,000 Hz
80 Hz, 18 dB/octave
–34 dB (19.9 mV) re 1V at 1 Pa
50 ohms
145 dB SPL, 1 kHz at 1% T.H.D.
155 dB SPL, with 10 dB pad (nominal)
1
16 dB SPL
129 dB, 1 kHz at Max SPL
78 dB, 1 kHz at 1 Pa
48V DC, 4.8 mA typical
Flat, roll-off; 10 dB pad (nominal)
126 g (4.4 oz)
155.0 mm (6.10") long,
21.0 mm (0.83") diameter
Integral 3-pin XLRM-type
AT4049b-EL (omnidirectional)
AT4053b-EL (hypercardioid)
S1
AT8405a stand clamp for 5/8"-27
threaded stands; AT8159 windscreen;
protective carrying case
frequency response: 20–20,000 Hz
10 dB
100
12" or more on axis
Roll-off
330˚
200
Frequency in Hertz
0˚
180˚
500
30˚
150˚
5k
2k
1k
60˚
120˚
10k
90˚
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
50
LEGEND
polar pattern
300˚
270˚
240˚
210˚
SCALE IS 5 DECIBELS PER DIVISION
Audio-Technica Corporation
audio-technica.com ©2016 Audio-Technica P52079-01
Response in dB
20k
Loading...