精巧的外型设计及卓越的声音还原能力，Microflex界面话筒是会议室理想的选择方案。具有可编程功能、无声薄膜开关、可互换话筒头、逻辑输入和输出以及LED指示灯等特性，Microflex界面话筒在各种应用场合都能够提供高品质声音。
■ 心型、超心型及无指向性
■ 黑色或白色型号可供选择
■ 可编程、无声薄膜开关
■ 逻辑输入和输出端子
■ LED指示灯
提供型号：
MX392 C/S/O 表面安装话筒，配有无接头的电缆
C＝心型，S＝超心型，O＝无指向性
Specifications:
Frequency Response
50 to 17,000 Hz
Polar Pattern
Cardioid (MX392/C, MX393/C)
Supercardioid (MX392/S, MX393/S)
Omnidirectional (MX392/O, MX393/O)
Output Impedance
EIA Rated at 150 ohms (180 ohms actual)
Sensitivity (at 1 kHz, open circuit voltage)
Cardioid Cartridge: -27.5 dBV/Pa (42.2 mV)
Supercardioid Cartridge: -26.5 dBV/Pa (47.3 mV)
Omnidirectional: -22.0 dBV/Pa (79.4 mV)
1 Pascal=94 dB SPL
Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load)
Cardioid: 117.0 dB
Supercardioid: 116.0 dB
Omnidirectional: 111.5 dB
Signal to Noise Ratio (referenced at 94 dB SPL)
Cardioid: 71.0 dB
Supercardioid: 72.0 dB
Omnidirectional: 76.5 dB
Equivalent Output Noise (A-weighted)
Cardioid: 23.0 dB
Supercardioid: 22.0 dB
Omnidirectional: 17.5 dB
Dynamic Range
94.0 dB
Common Mode Rejection
45 dB minimum, 10 Hz to 100 kHz
Switch Attenuation
50 dB minimum
Preamplifier Output Clipping Level
-6 dBV (0.5 V)
Polarity
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector.
Logic Connections (MX392 Only)
LED IN: Active low (<1.0v), TTL compatible. Absolute maximum voltage: -0.7V to 50V.
SWITCH OUT: Active low (<0.5V), sinks up to 20mA, TTL compatible. Absolute maximum voltage: -0.7V to 24V (up to 50V through 3 k ohms).
Power Requirements
11 to 52 Vdc phantom
2.0 mA current consumption
Environmental Requirements
Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)
Relative Humidity: 0 to 95%
Dimensions
See User Guide
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