Shure Microflex MX400 Series Manuel utilisateur
MX412, MX418, MX424
Gooseneck Microphones
Online user guide for Shure Microflex MX400 Series miniature gooseneck-mounted electret condenser microphones.
Version: 5.1 (2021-C)
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MX412, MX418, MX424
Gooseneck Microphones
General Description
The Shure Microflex MX412,MX418,andMX424microphonesareminiaturegooseneck-mountedelectretcondensermicro-
phones designed primarily for speech and vocal pickup. They can be mounted on lecterns, pulpits, or conference tables. All
models include a preamplifier and are available with interchangeable cartridges.
Wide dynamic range and frequency response for accurate sound reproduction
Interchangeable cartridges that provide an optimal polar pattern choice for each application
Shock mount provides over 20 dB of isolation from surface vibration noise
Snap-fit foam windscreen reduces breath noise or plosives
CommShield RF filtering reduces interference from nearby mobile devices
These microphones are available with 12 inch, 18 inch, or 24 inch goosenecks. Some models are also available with a built-in
mute switch.
"S" models include a mute button and LED.
"D" models include a desktop base with programmable mute button and LED and logic input and output.
"SE" models feature a surface mount flange with side-exit cable.
The polar pattern of the included cartridge is indicated by a model number suffix:
/C Cardioid
/S Supercardioid
/MS Mini-shotgun
/O Omnidirectional
/N Cartridge not included
Interchangeable Cartridges
Microflex microphones use interchangeable cartridges that allow you to choose the polar pattern for different installations.
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Snap-Fit Windscreen
Snap into the groove below the cartridge.
To remove, spread the gap with a screwdriver or thumbnail.
Provides 30 dB of "pop" protection.
Preamp Gain
If necessary, the preamplifier gain can be reduced by 12 dB. Contact an authorized Shure service center for information.
Microphone Placement
Aim the microphone toward the desired source, such as the talker.
Aim it away from any unwanted source, such as a loudspeaker.
Place the tip of the microphone within 15 to 30 cm (6 to 12 inches) of the desired sound source.
Always use the supplied windscreen or optional metal windscreen to control breath noise.
If four or more microphones will be open at the same time, use of an automatic mixer is recommended.
Permanent Installation
Mount the microphone using one of the following methods.
Flange
Drill a 22 mm (7/8 in.) diameter hole in the desired location.
Trace and drill three starter holes for the supplied screws using the flange as a template.
Insert the preamplifier through the mounting flange.
Slip the mounting flange retaining ring over the bottom of the preamplifier and slide it up until it is flush to the bottom of
the flange. Then press the ring firmly into place.
Secure the flange to the mounting surface with three screws.
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Shock Mount
Drill a 44 mm (1-3/4 in.) diameter hole in desired mounting surface.
Mark and drill starter holes for screws, using shock mount as a template.
Secure shock mount to mounting surface with screws.
Thread the supplied adapter onto the microphone before inserting it into the shock mount.
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Specifications
Type
Electret Condenser
Frequency Response
50–17000Hz
Polar Pattern
MX412/C, MX418/C, MX424/C Cardioid
MX412/S, MX418/S, MX424/S Supercardioid
Output Impedance
180Ω
Output Configuration
Active Balanced
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Sensitivity
@ 1 kHz, open circuit voltage
Cardioid –35dBV/Pa(18 mV)
Supercardioid –34dBV/Pa(21 mV)
Maximum SPL
1 kHz at 1% THD, 1 kΩ load
Cardioid 124dB
Supercardioid 123dB
Self Noise
A-weighted
Cardioid 28dBSPL
Supercardioid 27dBSPL
Signal-to-Noise Ratio
Ref. 94 dB SPL at 1 kHz
Cardioid 66dB
Supercardioid 68dB
Dynamic Range
1 kΩ load, @ 1 kHz
96dB
Common Mode Rejection
10 Hz to 100 kHz
45dB, minimum
Clipping Level
at 1% THD
–6dBV (0.5V)
Polarity
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR
connector
Mute Switch
MX412S/MX418S
–50dB minimum
Environmental Conditions
Operating Temperature –18–57°C (0–135°F)
Storage Temperature –29–74°C(–20–165°F)
Relative Humidity 0–95%
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Power Requirements
11–52 VDC, 2.0mA
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