Audio-Technica AT4051b Bruksanvisning
Audio-Technica
mikrofon
AT4051b
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CARDIOID CONDENSER MICROPHONE
- 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
- Switchable 80 Hz hi-pass lter and 10 dB pad
- Rugged turned-brass microphone housing for enduring dependability
- State-of-the-art design and manufacturing techniques ensure
compliance with A-T’s stringent consistency and reliability standards.
The AT4051b is intended for use in professional applications where
remote power is available. It requires 48V DC phantom power, which may
be provided by a mixer or console, or by a separate, in-line source such
as the Audio-Technica AT8801 single-channel or CP8506 four-channel
phantom power supplies.
Output from the microphone'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 hi-pass filter provides easy switching from a flat
frequency response to a low-end roll-off. The high-pass position reduces
the microphone's sensitivity to popping in close vocal use. It also reduces
the pickup of low-frequency ambient noise (such as trafc, air-handling
systems, etc.), room reverberation and mechanically coupled vibrations.
The AT4051b consists of two modular subassemblies: an AT4900b-48
body and an AT4051b-EL head capsule (both available separately).
Additional interchangeable capsules are available in omnidirectional
(AT4049b-EL) and hypercardioid (AT4053b-EL).
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 43°C for extended periods. Extremely high humidity
should also be avoided.
FORM No. ATGC-L0160-09-E
Machida • Tokyo • Japan
SPECIFICATIONS
ELEMENT Externally polarized (DC bias)
capacitor
POLAR PATTERN Cardioid
FREQUENCY RESPONSE 20-20,000 Hz
OPEN CIRCUIT SENSITIVITY -34 dB (19.9 mV) re 1V at 1 Pa
IMPEDANCE 50 ohms
MAXIMUM INPUT SOUND LEVEL 145 dB SPL, 1 kHz at 1% T.H.D.
155 dB SPL, with 10 dB pad (nominal)
NOISE 16 dB SPL
DYNAMIC RANGE (typical) 129 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO 78 dB, 1 kHz at 1Pa
LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave
PHANTOM POWER REQUIREMENTS 48V DC, 4.8 mA typical
SWITCH Flat, roll-off; 10 dB pad (nominal)
WEIGHT (less accessories) 126 g
DIMENSIONS 155.0 mm - long,
21.0 mm - body diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
ACCESSORIES FURNISHED AT8405a snap-in clamp for ⅝”-27
threaded stand; windscreen;
protective carrying case
10 dB
20k10k5k2k1k50020010050
8 kHz
200 Hz
1 kHz
5 kHz
0°
330°
300°
270°
240°
210°
180°
150°
120°
90°
60°
30°
Polar Pattern
Frequency Response
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
Frequency in Hertz
LEGEND 12” or more on axis
Response in dB
Optional Accessories:
AT4049b-EL omnidirectional microphone
capsule.
AT4053b-EL hypercardioid microphone
capsule.
AT8106 metal-frame pop lter.
AT8114 foam windscreen for AT8106 pop
lter.
AT8506 four-channel 48V phantom power
supply (AC powered).
AT8801/EU single-channel 48V phantom
power supply (AC powered).
Roll-off
Produktspecifikationer
| Varumärke: | Audio-Technica |
| Kategori: | mikrofon |
| Modell: | AT4051b |
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