Shure Microflex® MX400D Series microphones are miniature electret condenser gooseneck microphones with a desktop base and a 4.3 m (14 ft.) cable. Desktop base allows microphones to be used in multi-purpose rooms where quick setup is required, or where permanent installation is impractical.
Microflex microphones use interchangeable cartridges that allow you to choose the polar pattern for different installations.
Drill two holes in the mounting surface 50.8 mm (2 in.) apart.
Use #6-32 screws to secure the microphone.
Use the DIP switches to configure logic settings and mute button behavior.
The DIP switches are covered with a piece of clear tape at the factory. Remove tape to modify the switch settings.
Note: Bottom cover must be closed for microphone to function.
|OFF (factory default)||ON|
|3||Mute button enabled, LED illuminates when mic is active||Disable mute button (microphone always on), logic controls LED|
NOTE: Audio and logic ground are connected at microphone base.
Use the following modification in situations where your logic interface requires momentary closure of the SWITCH OUT, but you want the mute button to toggle the microphone (DIP switch 1 ON, 3 OFF):
Use DIP switches 1 and 2 to configure the mute button, as follows.
Be sure to set DIP switch 3 off (factory default) so that the mute button controls audio from the microphone.
|Switch Function||DIP Switch Setting|
|Momentary: push-to-mute (as shipped).|
|Toggle: (Push On/Push Off): Mic is active when powered on|
|Toggle: (Push On/Push Off): Mic is mute when powered on|
Use these settings if connecting the microphone to an automatic mixer or other device that mutes audio and controls the LED.
Green (LOGIC GROUND): Connects to the logic ground of an automatic mixer, switcher, or other equipment.
Orange (LED IN): Set DIP switch 3 on to use LED IN. When shorted to LOGIC GROUND, the LED turns on.
White (SWITCH OUT): Provides TTL logic (0 Vdc or 5 Vdc) in response to the mute button. Set DIP switch 1 for momentary or toggle. When phantom power is applied, logic initializes high (5 Vdc). DIP switch 2 has no effect on SWITCH OUT.
@ 1 kHz, open circuit voltage
|Cardioid||–35 dBV/Pa(21 mV)|
|Supercardioid||–34 dBV/Pa(24 mV)|
1 kHz at 1% THD, 1 kΩ load
|Cardioid||28 dB SPL|
|Supercardioid||27 dB SPL|
Ref. 94 dB SPL at 1 kHz
1 kΩ load, @ 1 kHz
45 dB, minimum
at 1% THD
–6 dBV (0.5 V)
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR connector
|MX412D||0.81 kg (1.80 lbs)|
|MX418D||0.82 kg (1.82 lbs)|
|LED IN||Active low (≤1.0V), TTL compatible. Absolute maximum voltage: -0.7V to 50V.|
|LOGIC-OUT||Active low (≤0.5V), sinks up to 20mA, TTL compatible. Absolute maximum voltage: -0.7V to 24V (up to 50V through 3kΩ).|
–50 dB minimum
4.3 m (14 ft) attached cable with shielded audio pair terminated at a 3-pin male XLR and three unterminated conductors for logic control
|Operating Temperature||–18–57°C (0–135°F)|
|Storage Temperature||–29–74°C (–20–165°F)|
11–52 V DC, 2.0 mA
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
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4