Audio-Technica AT4021 Manual

Audio-Technica Mikrofon AT4021

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Side 1/2

CARDIOID CONDENSER MICROPHONE

- Outstanding performance and rugged construction, ideal for critical

studio & live applications

- High SPL handling and wide dynamic range

- Flat, extended frequency response

- Switchable 80 Hz hi-pass lter and 10 dB pad

- High front-to-back rejection ratio – cardioid polar pattern improves

isolation of desired sound source

- Low self-noise perfectly suited for digital recording equipment

- Exceptional reproduction of low-frequency sounds

- Low-mass element for superb transient response

The AT4021 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 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 trafc,

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

coupled vibrations.

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-L0145-08-E

Machida • Tokyo • Japan

SPECIFICATIONS

ELEMENT Fixed-charge back plate

permanently polarized condenser

POLAR PATTERN Cardioid

FREQUENCY RESPONSE 20-20,000 Hz

OPEN CIRCUIT SENSITIVITY -34 dB (19.9 mV) re 1V at 1 Pa

IMPEDANCE 250 ohms

MAXIMUM INPUT SOUND LEVEL 146 dB SPL, 1 kHz at 1% T.H.D.

156 dB SPL, with 10 dB pad (normal)

NOISE 14 dB SPL

DYNAMIC RANGE (typical) 132 dB, 1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO 80 dB, 1 kHz at 1Pa

LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave

PHANTOM POWER REQUIREMENTS 48V DC, 3.0 mA typical

WEIGHT (less accessories) 119 g

DIMENSIONS 144.0 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:

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:	AT4021
Type:	Scene/optræden mikrofon
Produktfarve:	Sort
Husmateriale:	Messing
Forbindelsesteknologi:	Ledningsført
Enhedsgrænseflade:	mini XLR (3-pin)
Bæretaske:	Ja
Mikrofonindgangsimpedans:	250 ohm (Ω)
Mikrofon frekvens:	20 - 20000 Hz
Mikrofonretningstype:	Kardioid
Mikrofon sensitivitet:	-34 dB
Mikrofon vægt:	119 g
Antal produkter inkluderet:	1 stk
Svingspole type:	Forpolariseret kondensator
Mikrofon dimensioner (DxH):	21 x 144 mm
Mikrofon, signal-til-støjforhold:	80 dB
Mikrofon dynamikområde:	132 dB
Garantiperiode:	5 År
Lavskåret filter:	80 Hz