Audio-Technica MT830a Manual de Usario
Audio-Technica
Microfoon
MT830a
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SUBMINIATURE OMNIDIRECTIONAL CONDENSER MICROPHONE
- Maximum intelligibility and clean, accurate reproduction for lecturers,
singers, stage and TV performers.
- Low-prole design is ideal for applications requiring minimum visibility.
- Includes a clothing clip and accessory windscreens.
- MT830a is switchable for low-frequency roll-off reduces sensitivity to
popping in close vocal use.
- MT830a can be operated on battery or phantom power.
- MT830cW is terminated for use with all Audio-Technica UniPak™
wireless systems.
The MT830a / MT830cW is a subminiature condenser microphone
intended to be worn on the clothing of performers for excellent yet
unobtrusive sound pickup. The wide-range capability of the microphone
ensures clean, accurate reproduction with high intelligibility for lecturers,
singers, stage and TV performers, as well as musical instruments. Its
small size makes the microphones ideal for use in applications where
minimum visibility is required.
The microphone element is enclosed in a rugged housing with low-
reectance nish. Internal construction is designed to minimize handling
and clothing noise. A 1.4m cable is provided between the microphone
and terminal plug. A clothing clip and accessory windscreens are also
provided.
MT830a
Includes a power module AT8531 that 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.
An integral 80Hz high-pass filter provides easy switching from a flat
frequency response to a low-end roll-off. The roll-off position reduces
the pickup of low-frequency ambient noise (such as trafc, air-handling
systems, etc.), room reverberation and mechanically coupled vibrations.
Output from the power module’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.
MT830cW
Less power module and includes clothing clip and metal-frame pop lter
only. 1.4 m cable terminated with locking 4-pin connector for Audio-
Technica UniPak™ body-pack wireless transmitters.
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 40°C for extended periods. Extremely high humidity
should also be avoided.
FORM No. ATGC-L0075-07-E
Machida • Tokyo • Japan
SPECIFICATIONS
ELEMENT Fixed-change back plate permanently
polarized condenser
POLAR PATTERN Omnidirectional
FREQUENCY RESPONSE 30-20,000 Hz
OPEN CIRCUIT SENSITIVITY -34 dB (19.9 mV) re 1V at 1 Pa (MT830a)
IMPEDANCE 200 ohms (MT830a)
MAXIMUM INPUT SOUND LEVEL 131 dB SPL, 1 kHz at 1% T.H.D. (MT830a)
LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave (MT830a)
PHANTOM POWER REQUIREMENTS 11-52V DC, 2 mA typical (MT830a)
BATTERY TYPE 1.5V AA (MT830a)
BATTERY CURRENT / LIFE 2.0 mA / 1200 hours (MT830a)
SWITCHES (MT830a)Flat, roll-off
WEIGHT (less cable and accessories)
MICROPHONE
POWER MODULE (AT8531)
1.3 g
81.2 g
DIMENSIONS
MICROPHONE
POWER MODULE (AT8531)
15.8 mm - L,
8.5 mm - W, 5.0 mm - thick
83.0 mm - H x 63.0 mm - W x
22.0 mm - D
OUTPUT CONNECTOR
MT830a (AT8531)
MT830cW
Integral 3-pin XLRM-type
locking 4-pin connector for UniPak™
CABLE 1.4 m long (permanently attached to micro-
phone), 2.5 mm diameter
ACCESSORIES FURNISHED Clothing clip;
Windscreens;
protective pouch.
AT8531 power module (MT830a)
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
Roll-off (MT830a)
same as 1 kHz
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-L0075-07-C
Machida • Tokyo • Japan
全方向指向性微型电容话筒
- 高集成结构，清晰及准确的收音，可在教学、演唱、舞台、电视广
播上使用。
- 小型及不显眼设计，合适于需要稳藏话筒的场合使用。
- 配有一领带夹和金属网防风罩。
- MT830 a 设有高通滤 波开 关，可减低 收音 环境 中低 频噪 声。
- MT830 a 可使用幻象供电或电池供电工作。
- MT830cW 输出端可连接所有鐵三角无线系统的UniPak™盒式接收
机使用。
MT830a / MT830cW 是为 戴在表演者衣服上，在不防 碍外观，但有
超卓收音效果而设计的微型电容话筒。全方向指向性收音，能有效地
提高收音效果，不需特别注意话筒的位置，已能确保演讲者、歌唱
家、舞台及电视演员提供高度清晰及准确的重播。
话筒的元件封闭在一个坚固及低反光的外壳内，其内部构造设计得尽
量减少碰撞时及衣 服磨擦时的噪音 。话筒提供一条长1. 4m的音频线，
此外还包括一个领带夹和附属的防风棉。
MT8 30 a
配有一个 供电模组，需要提供 至 幻象供电或AT85 31 11V 52V 1.5V A A
电池操作，当使用幻象电源操作时，可以不安装电池。
内置高通滤波电路，可轻易由平直的频率响应，开启为于8 0 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。
供电模组的 卡农输出 端为 低阻抗平 衡输 出，话 筒音 频信 号最终XLRM
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。
MT8 30 cW
不带供电模组，但提供领带夹和金属网防风罩，长1. 4m 音频线的 输出
端可连接所有鐵三角无线系统的Uni Pa k™盒式接 收机 。
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 固定充电背板，静电型电容式
指向特性 全方向指向性
频率响应 30-20,000 Hz
开通灵敏度 -34 dB (19.9 mV) 以 1V 于 1 Pa (MT830a)
输出阻抗 200 欧姆 (MT830a)
工作电压 131 dB SPL, 1 kHz 于 1% T.H.D (MT830a)
高通滤波 80 Hz, 12 dB/octave (MT830a)
幻象供电 直流 11-52V, 耗电 3.5 mA 典型
(MT830a)
电池 1.5V 5
号电池 (MT830a)
耗电/电池寿命 2.0 mA / 1200 小时 (MT830a)
重量(不带连线与配件)
话筒
供电模组 (AT8531)
1.3 克
81.2
克
外形尺寸
话筒
供电模组 (AT8531)
15.8 mm -长，8.5 mm -宽，5.0 mm -厚
83.0 mm -高，63.0 mm -宽，22.0 mm -厚
输出连接器
MT830a (AT8531)
MT830cW
内置
XLRM-3针卡农公头
UniPak™盒式发射机连接头
连线 1.4 m - 长，2 mm - 直径，话筒固定连接。
附属品 领带夹；防风棉；保護袋。
AT8531 供电模组。(MT830a)
高通滤波 (MT830a)
与
1 kHz 曲线相同
Especificaciones del producto
| Marca: | Audio-Technica |
| Categoría: | Microfoon |
| Modelo: | MT830a |
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