SHURE MX418D/C ไมโครโฟนโพเดี้ยม ไมค์ก้านยาว  Microflex Standard Gooseneck Microphones 457.2 mm (18 in.) gooseneck

Desktop Base with 10 foot Cable, Logic Functions, Programmable Switch and LED Indicator, Snap-Fit Foam Windscreen

Microflex Gooseneck microphones are available in four models with a variety of heights and mounting styles to choose from. One model includes a silent mute switch with LED indicator, a Shure Microflex exclusive. And every Microflex Gooseneck features high sensitivity and balanced, transformerless output for maximum resistance to electromagnetic hum and RF interference, even over long cable runs.

The polar pattern of the cartridge is indicated by the model number suffix:

C = Cardioid, S = Supercardioid, N = No Cartridge

• Wide dynamic range and frequency response for accurate sound reproduction across the audio spectrum
• Interchangeable cartridges provide the right polar pattern for every application
• Balanced, transformerless output for increased immunity to noise over long cable runs
• Shock mount provides over 20 dB isolation from surface vibration noise
• Locking flange mount for permanently securing microphone to lecterns, pulpits, or conference tables
• Snap-fit foam windscreen
• Programmable on/off switch and LED on/off indicator (MX412D/MX418D)
• New brighter LED improves visibility under strong ambient lighting (MX412D/MX418D)
• Logic input and output terminals for remote control or use with automatic microphone mixers (MX412D/MX418D)
• Supplied shock mount for more than 20 dB isolation from surface transmitted noise (MX412SE/MX418SE)
• Supplied threaded flange mount for permanently securing the microphone to a lectern, pulpit, or conference table (MX412SE/MX418SE)

Microphone Specifications:

Frequency Response

     50 to 17,000 Hz

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.