Publications User Guides MX400 (English)
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    General Description

    The Shure Microflex® MX412, MX418, and MX424 microphones are miniature gooseneck-mounted electret condenser microphones 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.

    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

    1. Drill a 22 mm (7/8 in.) diameter hole in the desired location.
    2. Trace and drill three starter holes for the supplied screws using the flange as a template.
    3. Insert the preamplifier through the mounting flange.
    4. 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.
    5. Secure the flange to the mounting surface with three screws.

    Shock Mount

    1. Drill a 44 mm (1-3/4 in.) diameter hole in desired mounting surface.
    2. Mark and drill starter holes for screws, using shock mount as a template.
    3. Secure shock mount to mounting surface with screws.
    4. Thread the supplied adapter onto the microphone before inserting it into the shock mount.

    Specifications 

    Type

    Electret Condenser

    Frequency Response

    50–17000 Hz

    Polar Pattern

    MX412/C, MX418/C, MX424/C Cardioid
    MX412/S, MX418/S, MX424/S Supercardioid

    Output Impedance

    180 Ω

    Output Configuration

    Active Balanced

    Sensitivity

    @ 1 kHz, open circuit voltage

    Cardioid –35 dBV/Pa(18  mV)
    Supercardioid –34 dBV/Pa(21  mV)

    1 Pa=94 dB SPL

    Maximum SPL

    1 kHz at 1% THD, 1 kΩ load

    Cardioid 124 dB
    Supercardioid 123 dB

    Self Noise

    A-weighted

    Cardioid 28 dB SPL
    Supercardioid 27 dB SPL

    Signal-to-Noise Ratio

    Ref. 94 dB SPL at 1 kHz

    Cardioid 66 dB
    Supercardioid 68 dB

    Dynamic Range

    1 kΩ load, @ 1 kHz

    96 dB

    Common Mode Rejection

    10 Hz to 100 kHz

    45 dB, minimum

    Clipping Level

    at 1% THD

    –6 dBV (0.5 V)

    Polarity

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

    Mute Switch

    MX412S/MX418S

    –50 dBminimum

    Environmental Conditions

    Operating Temperature –18–57°C (0–135°F)
    Storage Temperature –29–74°C (–20–165°F)
    Relative Humidity 0–95%

    Power Requirements

    11–52  V DC, 2.0 mA

    Certifications

    Meets essential requirements of all applicable European Directives.

    Eligible for CE marking.

    The CE Declaration of Conformity can be obtained from Shure Incorporated or any of its European representatives. For contact information please visit www.shure.com

    The CE Declaration of Conformity can be obtained from: www.shure.com/europe/compliance

    Authorized European representative:

    Shure Europe GmbH

    Global Compliance

    Jakob-Dieffenbacher-Str. 12

    75031 Eppingen, Germany

    Phone: +49-7262-92 49 0

    Email: info@shure.de

    www.shure.com