Audio-Technica AT4021 Manual

Audio-Technica Mikrofon AT4021

Læs gratis den danske manual til Audio-Technica AT4021 (2 sider) i kategorien Mikrofon. Denne vejledning er vurderet som hjælpsom af 37 personer og har en gennemsnitlig bedømmelse på 4.6 stjerner ud af 19 anmeldelser. Har du et spørgsmål om Audio-Technica AT4021, eller vil du spørge andre brugere om produktet?

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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

10 dB

20k10k5k2k1k50020010050

8 kHz

200 Hz

1 kHz

5 kHz

0°

330°

300°

270°

240°

210°

180°

150°

120°

90°

60°

30°

指向特性

频率特性

声压曲线 1刻度5 dB

频率

频率 (赫兹)

电平平直

响应电平 (dB)

FORM No. ATGC-L0145-08-C

Machida • Tokyo • Japan

心形指向性电容话筒

- 杰出的表现和坚固的结构，适合于录音室和现场收音的应用。

- 可处理高声压电平，提供更大的动态范围。

- 平滑而伸展的频率响应。

- 设有80Hz高通滤波开及 10dB衰减。

- 心形指向性收音，可减低话筒两旁到后方噪音，改善音源的

收。音效果

- 低噪声结构，完全合适于高级数字录音设备。

- 增强对低频响应的重现。

- 轻重收音头设计，可提供更大的瞬间响应。

AT4021需要使用幻象供电工作，可使用专业调音台上的幻象48V

电源，也可以使用三角的鐵 AT8801 AT8506单通道或四通道幻象

电源供电器作独立供电。

低阻抗的平衡音频输出，话筒音频信号最终以卡农公头的 2号及3

号针脚输出，而 1号针脚则为地线(屏蔽)连接。输出相位将以正相

位电平设于 2号针脚上。

为濶免出现相位相互抵消而失真的情况，所有话筒连接时，接线

必需以 1-1，2-2

，3-3型式把针脚连接。

内置高通滤波电路，可轻易由平直的频率响应，开启为于 80

Hz 以下衰减的收音效果，应用高通滤波器可减低话筒在近距离

讲话收音时的喷气声，并可减低收音环境中低频噪声(如外间汔

车引擎声，空调系统的风声等 )，房间中的回声及机械性的震动

声。

把话筒暴露于高温中可能导致输出电平逐渐及永久性减弱，应避

免将话筒留在日晒的地方或长时间置于温度超过 43°C的地方，而

极高湿度也应避免。

技术指标

收音头直流偏压型电容式

指向特性心形指向性

频率响应 20-20,000 Hz

开通灵敏度 -34 dB (19.9 mV) 以 1V 于 1 Pa

输出阻抗 250 欧姆

最大承受声压 146 dB, 1 kHz 于 1% T.H.D.

156 dB, 于 10 dB 衰减

噪声 14 dB 声压

动态范围 (典型) 132 dB, 1 kHz 于最高声压

讯噪比 80 dB, 1 kHz 于 1Pa

高通滤波 80 Hz, 12 dB/octave

幻象供电直流 48V，耗电 3.0 mA

典型

重量 119 克

外形尺寸 144.0 mm - 长度,

21.0 mm - 直径

输出连接器内置 XLRM-3针卡农公头

附属品 AT8405a ⅝”-27接头转轴式支架，

保護袋，海棉防风罩。

选择配件 :

AT8506 四通通48V幻象供电器 (

交流供

电)。

AT8801/EU 单通道48V幻象供电器 (交

流供电 )

。

高通滤波

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