Instrukcja obsługi Audio-Technica AT4050ST
Audio-Technica
mikrofon
AT4050ST
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40 series microphones
AT4050ST
Stereo Condenser Microphone
Features
• Innovativeside-addressMid-Sidestereomicrophoneengineered
forprofessionalrecording,broadcastandsoundreinforcement
• Independentcardioidandgure-of-eightcondenserelements
• SwitchselectionofM-Smodeandtwointernallymatrixed
stereomodes
• Dual-diaphragmcapsulesmaintainprecisepolarpatterndenition
acrossthefullfrequencyrangeofthemicrophone
• Transformerlesscircuitryvirtuallyeliminateslow-frequency
distortionandprovidessuperiorcorrelationofhigh-speedtransients
• The2-micron-thick,vapor-depositedgolddiaphragmsundergoa
ve-stepagingprocesssothattheoptimumcharacteristics
remainconstantoveryearsofuse
• Openacousticalenvironmentofthesymmetricalhousing
assemblyminimizesunwantedinternalreections
• Customshockmountprovidessuperiorisolation
• Integral80Hzhigh-passlterswitchand10dBpadswitch
• State-of-the-artdesignandmanufacturingtechniquesensure
compliancewithA-T’sstringentconsistencyandreliabilitystandards
Description
The AT4050ST is a stereo side-address externally polarized (DC bias)
condenser microphone with independent cardioid and gure-of-eight
elements congured in a Mid-Side arrangement with switch-selectable
internal matrixing. The microphone allows sound recordists the choice
of selecting a left-right stereo output (wide 127° or narrow 90°) via the
microphone’s internal matrixing system or choosing discrete Mid-Side
signals for later manipulation. It is designed to meet the most critical
acoustic requirements of professional recording, broadcast and sound
reinforcement.
The microphone requires 48V phantom power for operation.
The microphone includes a 5.0 m (16.5') dual output cable terminating
in a 5-pin XLRF-type to two standard 3-pin XLRM-type connectors. The
output of the microphone is a 5-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 AT8449
shock mount provides superior isolation and permits mounting on any
microphone stand with 5/8"-27 threads. A dust cover and a protective
carrying case are also included.
Operation and Maintenance
The AT4050ST requires 48V phantom power on Pins 2 and 3 of both
XLR3M-type connectors for operation. Wiring must be balanced
throughout, and all mic cables in the system must be wired consistently:
Pin 1-to-Pin 1, etc. If connecting to unbalanced inputs, good-quality
balanced line transformers must be used.
Mid-Side Operation: In M-S mode, the microphone provides independent
Mid and Side signals. This allows the width of the stereo image to be
adjusted in post production or in the eld with a matrix mixer.
Matrixed Stereo: The microphone offers two internally matrixed modes
which provide traditional “left-right” stereo without the need for external
mixers. To accommodate varying acoustic environments, the user may
select between a wide pattern (127°) with increased ambient pickup, and
a narrow pattern (90°) which offers more rejection and less ambience.
Output phase is “Pin 2 hot.”
For correct left-right stereo orientation, position the microphone so
the raised Audio-Technica emblem is facing the sound source. In the
internally matrixed modes, locating the microphone nearer the sound
source enhances the apparent width of the stereo image, while
decreasing room ambience. Moving away from the sound source will
result in a narrower stereo image and more room sound.
M-SOutput Connector Pin1 Pin2 Pin3
Mid XLR3M-Gray Ground Mid + Mid –
XLR5M Mic Connector: Pin 1 Pin 2 Pin 3
Side XLR3M-Red Ground Side + Side –
XLR5M Mic Connector: Pin 1 Pin 4 Pin 5
MatrixOutput Connector Pin1 Pin2 Pin3
Left XLR3M-Gray Ground L + L –
XLR5M Mic Connector: Pin 1 Pin 2 Pin 3
Right XLR3M-Red Ground R + R –
XLR5M Mic Connector: Pin 1 Pin 4 Pin 5
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, providing higher Max 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.
In use, secure the cable to the mic stand or boom, leaving a slack loop
at the mic. This will ensure the most effective shock isolation and reduce
the possibility of accidentally pulling the microphone out of its mount.
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.
Architect’s and Engineer’s Specications
The microphone shall be a side-address Mid-Side stereo design with two
independent externally polarized (DC bias) condenser elements. It shall
have cardioid and gure-of-eight polar patterns and a frequency response
of 20 Hz to 18,000 Hz. The microphone shall operate from an external 48V
DC phantom power source. It shall be capable of handling sound input
levels up to 149 dB (159 dB with 10 dB pad–mid and side) with a dynamic
range of 134 dB (mid), 132 dB (side). Nominal open circuit output voltage
shall be 15.8 mV (mid), 15.8 mV (side), 7.9 mV (stereo 90º), 8.9 mV (stereo
127º) at 1V, 1 Pascal. Output shall be low impedance balanced (50 ohms).
Specyfikacje produktu
| Marka: | Audio-Technica |
| Kategoria: | mikrofon |
| Model: | AT4050ST |
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