Audio-Technica AT4049b Manual

Audio-Technica Mikrofon AT4049b

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Side 1/2

OMNIDIRECTIONAL 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 AT4049b 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 AT8506

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 traffic, air-handling systems, etc.), room reverberation and

mechanically coupled vibrations.

The AT4049b consists of two modular subassemblies: an

AT4900b-48 body and an AT4049b-EL head capsule (both available

separately). Additional interchangeable capsules are available in

cardioid (AT4051b-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-L0156-09-E

Machida • Tokyo • Japan

SPECIFICATIONS

ELEMENT Externally polarized (DC bias)

capacitor

POLAR PATTERN Omnidirectional

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 146 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) 130 g

DIMENSIONS 155.0 mm - long,

21.0 mm - maximum body diameter

OUTPUT CONNECTOR Integral 3-pin XLRM-type

ACCESSORIES FURNISHED AT8405a stand 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:

AT4051b-EL cardioid microphone capsule.

AT4053b-EL hypercardioid microphone

capsule.

AT8506 four-channel 48V phantom power

supply (AC powered).

AT8801/EU single-channel 48V phantom

power supply (AC powered).

Roll-off

Produkt Specifikationer

Mærke:	Audio-Technica
Kategori:	Mikrofon
Model:	AT4049b

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