Audio-Technica AT8031 Manual

Audio-Technica Mikrofon AT8031

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CARDIOID CONDENSER MICROPHONE

- All-purpose condenser microphone ideal for interviews, voice-overs,

air studio and general audio acquisition

- Cardioid polar pattern reduces pickup of sounds from the sides and

rear, improving isolation of desired sound source

- Switchable 80 Hz high-pass lter minimizes pickup of undesired

low-frequency sounds

- Large protective screen reduces “popping” and sibilant distortion

- Operates on battery or phantom power

The AT8031 requires 11V to 52V DC phantom power or a 1.5V AA

battery for operation. A battery need not be in place for phantom

power operation.

Battery installation: Unscrew the lower section of the microphone

body, just below the nameplate. Insert a fresh 1.5V AA battery in the

handle compartment (“+” end up), then reassemble the microphone.

Alkaline batteries are recommended for longest life. Remove the bat-

tery during long-term storage.

Output from the microphone’s XLRM-type connector is low imped-

ance (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 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 trafc, air-han-

dling systems, etc.), room reverberation and mechanically coupled

vibrations.

The high sensitivity of the AT8031 assures useful output and an

excellent match to most input sources. In some cases, however, an

attenuator such as the Audio-Technica AT8202 may be required be-

tween the microphone and preamplier to avoid overloading sensitive

input stages.

The microphone is RoHS compliant–free from all substances speci-

ed in the EU directive on hazardous substances.

Avoid leaving the microphone in the open sun or in areas where tem-

peratures exceed 43°C for extended periods. Extremely high humid-

ity should also be avoided.

FORM No. ATGC-L0118-07-E

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

same as 1 kHz

Machida • Tokyo • Japan

SPECIFICATIONS

ELEMENT Fixed-charge back plate

permanently polarized condenser

POLAR PATTERN Cardioid

FREQUENCY RESPONSE 30-20,000 Hz

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

OPEN CIRCUIT SENSITIVITY

(Phantom / Battery)

-44 dB (6.3 mV) re 1V at 1 Pa

-45 dB (5.6 mV) re 1V at 1 Pa

IMPEDANCE (Phantom / Battery) 250 ohms / 300 ohms

MAXIMUM INPUT SOUND LEVEL

(Phantom / Battery)

137 dB / 123 dB SPL,

1 kHz at 1% T.H.D.

DYNAMIC RANGE (typical)

(Phantom / Battery)

113 dB / 99 dB,

1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO 70 dB, 1 kHz at 1 Pa

PHANTOM POWER REQUIRMENTS 11 - 52V DC, 2 mA typical

BATTERY TYPE 1.5V AA/UM3

BATTERY CURRENT / LIFE 0.4 mA / 1200 hrs typical (alkaline)

SWITCHES Flat, roll-off

WEIGHT (less cable and accessories) 205 g

DIMENSIONS 193.0 mm long,

50.3 mm head diameter

OUTPUT CONNECTOR Integral 3-pin XLRM-type

ACCESSORIES FURNISHED AT8405a stand clamp for ⅝"-27

threaded stands;

AT8114 windscreen;

⅝"-27 to ⅜"-16 threaded adapter;

battery;

soft protective pouch

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-L0118-07-C

心形指向性电容话筒

- 适合於采访、讲话、播音和一般音频收音等，多方面应用的

电容话筒。

- 心形指向性收音，可减低话筒两旁到后方的噪音，改善音源

收音效果。

- 设有80Hz高通滤波开关，有效降低环境中低频噪声。

- 大型防风保护罩，可减低喷气声和齿声失真。

- 可以使用电池或幻象供电工作。

AT 80 31 1 1V 5 2V 1 .5 V AA话筒需使用至幻象供电或电池工

作，当使用幻象电源时，可以不安装电池。

安装电池时，旋开话筒底部的电池盖，确认电池的极性跟随(

电池盒内的标记，放入一枚新的电池极向上，再) 1.5V AA ('+' )

旋回电池盖。建议使用碱性电池，而长时间不使用时，请把电

池取出。

话筒的卡农输出端为低阻抗平衡输出，话筒音频信号最XLRM

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。

为避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

80Hz以下衰减的收音效果，应用高通滤波器可减低收音环境

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。

AT8031提供高灵敏度的收音效能，可确保能接收到最大的音

源。而在某些情况下，为避免发生超负载输入而出现破声情

况，需要在话筒和前置放大器之间加入等的电平衰减AT8202

器。

话筒符合 Ro HS规格，在构造上不含有欧盟禁用的危害性物

质。

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。

与

1 kHz 曲线相同

Machida • Tokyo • J apan

技术指标

收音头固定充电背板，

静电型电容式

指向特性心形指向性

频率响应 30-20,000 Hz

高通滤波 80 Hz, 12 dB/octave

开通灵敏度(幻象供电)

(电池)

-44 dB (6.3 mV) /

-45 dB (5.6 mV) 以 1V 于 1 Pa

输出阻抗(幻象供电/电池) 250 欧姆 / 300 欧姆

最大承受声压(幻象供电/电池)137 dB / 123 dB 声压,

1 kHz 于 1% T.H.D.

动态范围 (典型)(幻象供电/电池) 113 dB / 99 dB, 1 kHz

于最高声压

讯噪比 70 dB, 1 kHz 于 1 Pa

电池种类 1.5V AA型

5 号电池

耗电/电池寿命 0.4 mA / 1200小时 (碱性电池)

幻像供电直流 11 - 52V, 耗电 2mA 典型

开关平直 / 高通滤波

重量 205 g

外形尺寸 193.0 mm 长, 50.3 mm 最大外径

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；

AT8114 防风罩；

⅝"-27至⅜"-16

转接头；

电池；

保护袋

高通滤波

Produkt Specifikationer

Mærke:	Audio-Technica
Kategori:	Mikrofon
Model:	AT8031
Type:	Scene/optræden mikrofon
Produktfarve:	Sort
Forbindelsesteknologi:	Trådløs
Mikrofon mute:	Ja
Enhedsgrænseflade:	mini XLR (3-pin)
Mikrofonindgangsimpedans:	250 ohm (Ω)
Mikrofon frekvens:	30 - 20000 Hz
Mikrofonretningstype:	Kardioid
Mikrofon sensitivitet:	-44 dB
Mikrofon vægt:	205 g
Mikrofon dimensioner (DxH):	193 x 50.3 mm
Mikrofonholder:	Ja