舒尔标准鹅颈话筒　SHURE　MX418

MX418 C/S/N
18英寸(45.7厘米)，配有前置放大器

Microflex标准鹅颈话筒鹅颈长度更长，灵活性增强，可满足演讲厅、教学以及法庭等环境中的相关应用。四种型号可提供不同鹅颈长度和安装类型，Microflex鹅颈话筒具有高灵敏度，无变压器平衡输出设计对电磁交流声及射频干扰具有蕞大的隔离能力，即便使用长也可获得高质量的声音。

■ 提供12英寸(30.5厘米)以及18英寸(45.7厘米)不同长度的鹅颈选择
■ 可互换话筒单元为不同应用场合提供正确指向性选择
■ 缩紧式法兰安装件，可将话筒持久稳固于表面
■ 贴合式泡沫防风罩
■ 防震底座可隔离超过20dB的来自表面的振动噪音
■ 有附带前置放大器、串联前置放大器或桌面底座供选择

Microphone Specifications:

Frequency Response

     50 to 17,000 Hz

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Output Impedance
     180 ohms actual (EIA rated at 150 ohms)

Sensitivity (At 1,000 Hz, open circuit voltage*)
     Cardioid: -35.0 dBV/Pa (17.8 mV)
     Supercardioid: -33.5 dBV/Pa (21.1 mV)
     Omnidirectional: -27.5 dBV/Pa (42.2 mV)
     All values -12 dB at 0 gain; *1 Pascal = 94 dB SPL

Maximum SPL (1 kHz at 1% THD, 1 k ohm load)
     Cardioid: 124.2 dB
     Supercardioid: 122.7 dB
     Omnidirectional: 116.7 dB
     All values +6 dB at 0 gain

Equivalent Output Noise (A-weighted)
     Cardioid: 28.0 dB SPL
     Supercardioid: 26.5 dB SPL
     Omnidirectional: 20.5 dB SPL

Signal to Noise Ratio (referenced at 94 dB SPL)
     Cardioid: 66.0 dB
     Supercardioid: 67.5 dB
     Omnidirectional: 73.5 dB

Dynamic Range at 1 k ohm load
     96.2 dB
     100 dB at 0 gain

Common Mode Rejection
     45.0 dB minimum

Preamplifier Output Clipping Level (1% THD)
     -6.0 dBV (0.5 V)
     -12 dBV at 0 gain

Polarity
     Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector.

Power Requirements
     11 to 52 Vdc phantom, 2.0 mA

Environmental Requirements
     Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)
     Relative Humidity: 0 to 95%

Dimensions
     See User Guide.

SHURE(舒尔)是一间专业话筒、无线系统、混音器、 音频处理器及个人监听系统等设备之生产商。她们的产品不只限于专业用途， 其部份产品更适合广大家用者。

舒尔的音响创新历史已历经80余载，蕞初制作优质话筒和音响产品的强烈热情已演变成了一种执着。 勿庸置疑，舒尔将继续在全球范围内为优质话筒和音响产品树立行业标准。

With a history of audio innovation spanning over 80 years, Shure has turned a passion for making great microphones and audio electronics into an obsession. No wonder Shure continues to set the worldwide industry standard for superior microphones and audio electronics.