Shure MX400D
The Shure MX400D is a desktop microphone with a gooseneck design, ideal for multi-purpose rooms where quick setup is required or where permanent installation is impractical. The microphone features:
- Wide dynamic range and frequency response for accurate sound reproduction
- Interchangeable cartridges for cardioid, supercardioid, or omnidirectional polar patterns
- Balanced, transformerless output for increased immunity to noise
- Programmable on/off switch and LED on/off indicator
- Logic input and output terminals for remote control or use with automatic microphone mixers
Shure MX400D
The Shure MX400D is a desktop microphone with a gooseneck design, ideal for multi-purpose rooms where quick setup is required or where permanent installation is impractical. The microphone features:
- Wide dynamic range and frequency response for accurate sound reproduction
- Interchangeable cartridges for cardioid, supercardioid, or omnidirectional polar patterns
- Balanced, transformerless output for increased immunity to noise
- Programmable on/off switch and LED on/off indicator
- Logic input and output terminals for remote control or use with automatic microphone mixers
©2007, Shure Incorporated
27H2831 (Rev. 2)
Printed in U.S.A.
GENERAL
Shure Microflex
®
MX400D Series microphones are miniature
electret condenser gooseneck microphones with a desktop base
and attached 3 m (approximate)/10 ft cable. The desktop base
allows these microphones to be used in multi-purpose rooms
where quick set-up is required, or where permanent installation
is impractical.
FEATURES
• Wide dynamic range and frequency response for accurate
sound reproduction across the audio spectrum
• Interchangeable cartridges provide the right polar pattern
for any application
• Balanced, transformerless output for increased immunity to
noise over long cable runs
• Programmable on/off switch and LED on/off indicator
• New brighter LED improves visibility under strong ambient
lighting
• Logic input and output terminals for remote control or use
with automatic microphone mixers
• Snap-fit foam windscreen
• New RF filtering
MODEL VARIATIONS
MX412D: 304.8 mm (12 in.) desktop mini-condenser, goose-
neck-mounted microphone.
MX418D: 457.2 mm (18 in.) desktop mini-condenser, goose-
neck-mounted microphone.
SELECTING A POLAR PATTERN
All Microflex microphones are available with any one of three inter-
changeable cartridges. The polar pattern of the cartridge is indicat-
ed by the model number suffix:
/C = Cardioid, /S = Supercardioid, /O= Omnidirectional
Cardioid (C). Recommended for general sound reinforcement ap-
plications. Pickup angle (-3 dB) = 130°.
Supercardioid (S). Recommended for sound reinforcement appli-
cations requiring narrower or more distant coverage. Pickup angle
(-3 dB) = 115°.
Omnidirectional (O). Recommended for recording or remote
monitoring applications. Pickup angle = 360°.
GENERAL INSTALLATION GUIDELINES
1. Aim the microphone toward the desired sound source, such as
the talker, and away from any unwanted sound source, such as
a loudspeaker.
2. Place the microphone cartridge within 15 to 30 cm (6 to 12 in.)
of the desired sound source.
3. Always use the supplied windscreen or the optional metal
windscreen to control breath noise.
4. If four or more microphones will be on at the same time, use of
an automatic mixer, such as the Shure SCM810 or FP410, is
recommended to minimize feedback and noise.
MICROPHONE INSTALLATION
Securing a Microphone to a Mounting Surface (Figure 1
on page 11)
1. Install two #6-32 screws, 50.8 mm (2 in.) apart starting from the
bottom of the mounting surface.
2. Drill screw-mounting holes through table. Remove debris from
hole.
3. Place unit on table with the holes lined up.
4. Tighten the screws into the threaded holes to secure the
microphone.
Installing the Foam Windscreen (Figure 2 on page 11)
1. Press the foam windscreen onto the microphone until it snaps
into the groove located below the cartridge.
2. To remove the windscreen, spread the slot in its mounting ring
with a screwdriver or thumbnail and pull the windscreen off
carefully.
INTERNAL DIP SWITCH FUNCTIONS
All MX400D models have internal DIP switches that allow the user
to program the On/Off switch for a variety of applications. To gain
access to the DIP switches, remove the bottom plate.
LOGIC TERMINAL DEFINITIONS
LOGIC GND Terminal: Connects to the logic ground of an auto-
matic mixer, switcher, or other equipment.
SWITCH OUT Terminal: Provides a TTL logic low (0 Vdc) when
the membrane switch is pressed. Provides TTL logic high (5 Vdc)
otherwise. This signal is available at all times for all switch settings.
The Switch Out function provides momentary closure when S1 is
Off and latching closure when it is On.
LED IN Terminal: Can be modified to remotely control the LED by
flipping DIP switch S3 in the microphone to the ON position. As
supplied, the LED IN terminal draws 5 Vdc. When this is shorted to
the LOGIC GROUND terminal, the LED turns on.
Microflex
®
MX400D Series
Desktop Microphones User Guide
2
Changing SWITCH OUT Terminal to Momentary,
Independent of S1 position. (Figure 6 on page 12)
To accommodate interface equipment requiring momentary clo-
sure of the microphone (even when the desired microphone func-
tion is latching on/off), proceed as follows:
1. Remove R45 from the top of the circuit board.
2. Reinstall R45 at location R46 on the top of the circuit
board.
Custom Switch Modifications
S4 is available for custom logic modifications. When S4 is in the
ON position, pad W4 is connected to pad W5.
SHURE, the Shure logo, and MICROFLEX are registered trade-
marks of Shure Incorporated.
SPECIFICATIONS
Frequency Response (Figure 3 on page 11)
50 to 17,000 Hz
Polar Pattern (Figure 4 on page 11)
Output Impedance (at 1,000 Hz)
Rated at 150 Ω (180 Ω actual)
Open Circuit Sensitivity
At 1 kHz, ref. 1 V per Pascal*
Cardioid:-33.5 dBV (21.1 mV)
Supercardioid:-32.5 dBV (23.7 mV)
Omnidirectional:-28.0 dBV (39.8 mV)
* 1 Pascal=94 dB SPL
Maximum SPL (1kHz at 1% THD, 1 kΩ load)
Cardioid:123.0 dB
Supercardioid:122.0 dB
Omnidirectional:117.5 dB
Equivalent Output Noise (A-weighted)
Cardioid:29.0 dB SPL
Supercardioid:28.0 dB SPL
Omnidirectional:70.5 dB SPL
Signal to Noise Ratio (referenced at 94 dB SPL)
Cardioid:65.0 dB
Supercardioid:66.0 dB
Omnidirectional:70.5 dB
Dynamic Range with 1 kΩ load
94.0 dB
Common Mode Rejection
45.0 dB minimum
Mute Switch Attenuation
50.0 dB minimum
Preamplifier Output Clipping Level (1% THD)
-6.0 dBV (0.5 V)
Polarity
Positive sound pressure on diaphragm produces positive voltage
on pin 2 relative to pin 3 of XLR output connector.
Power Requirements
11 to 52 Vdc phantom, 2.0 mA
Environmental Requirements
Operating Temperature Range: -18° to 57° C (0° to 135° F)
Relative Humidity: 0 to 95%
Dimensions (Figure 5 on page 12)
Weight
MX412D: 0.81 kg (1.80 lbs.) net, 1.63 kg (3.62 lbs.) packaged
MX418D: 0.82 kg (1.82 lbs.) net, 1.64 kg (3.64 lbs.) packaged
Cable Type (Figure 7 on page 12)
The attached custom cable contains a shielded audio pair and
three unshielded conductors for logic control.
Overall diameter=0.6 mm (0.165 in.)
CERTIFICATION
Eligible to bear CE Marking. Conforms to European EMC Direc-
tive 89/336/EEC. Meets applicable tests and performance criteria
in European Standard EN55103 (1996) parts 1 and 2, for residen-
tial (E1) and light industrial (E2) environments.
FURNISHED ACCESSORIES
Snap-Fit Foam Windscreen
(1 furnished, 4 in replacement kit) .............................RK412WS
OPTIONAL ACCESSORIES
Foam Ball Windscreen................................................... A99WS
Locking Metal Windscreen........................................ A412MWS
Custom Logic Cable (specify length)............................. 15A525
Custom Logic Cable
with threaded adaptor, to male XLR ..................................C131
REPLACEMENT PARTS
Omnidirectional Cartridge............................................... R183B
Supercardioid Cartridge.................................................. R184B
Cardioid Cartridge........................................................... R185B
DESIRED MICROPHONE FUNCTION USER ACTION/LED DISPLAY DIP SWITCH SETTINGS
Push to Mute (As Shipped) Press and hold switch to temporarily mute
microphone; release switch to unmute
LED turns on when microphone is active
S1 = OFF
S2 = OFF
S3 = OFF
Push to Talk Press and hold switch to activate microphone;
release switch to mute
LED turns on when microphone is active
S1 = OFF
S2 = ON
S3 = OFF
Push On/Push Off Press switch to toggle microphone on or off
LED turns on when microphone is active
S1 = ON,
S2 = ON for muted initial state
S2 = OFF for active initial state
S3 = OFF
Switch Deactivated, Mic Always Active No action, LED Always OFF S3 = ON
Switch Deactivated, Mic Always Active Short LED IN terminal to LOGIC GROUND terminal
LED Always ON
S3 = ON
Automatic Mixer Mode If S1=OFF, SWITCH OUT signal will be momentarily
logic low when switch is pressed
If S1=ON, SWITCH OUT signal will be latching logic
low when switch is pressed
Connect SWITCH OUT signal to various logic inputs
of automatic mixer for custom functions
Connect mixer channel GATE OUT to microphone
LED IN. LED on microphone turns on when its
channel is gated on
S1 = ON or OFF
S3 = ON
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11
30°
60°
90°
150°
120°
150°
120°
180°
30°
60°
90°
–5 dB
–10 dB
–15 dB
–20 dB
+5 dB
30°
60°
90°
150°
120°
150°
120°
180°
30°
60°
90°
–5 dB
–10 dB
–15 dB
–20 dB
+5 dB
150
o
120
o
150
o
120
o
180
o
30
o
60
o
90
o
30
o
60
o
0
150
o
120
o
150
o
120
o
180
o
30
o
60
o
30
o
60
o
–5 dB
0
90
o
–5 dB
–10 dB
–15 dB
90
o
90
o
500 1,000 2,000 5,000 10,000
20,000
50 100 20020
0
+10
–10
500 1,000 2,000 5,000 10,000
20,000
50 100 20020
0
+10
–10
500 1,000 2,000 5,000 10,00050 100 20020
0
+10
–10
250 Hz
500 Hz
1000 Hz
2500 Hz
6400 Hz
10000 Hz
250 Hz
500 Hz
1000 Hz
2500 Hz
6400 Hz
10000 Hz
250 Hz
500 Hz
1000 Hz
2500 Hz
6400 Hz
10000 Hz
150
o
120
o
150
o
120
o
180
o
30
o
60
o
90
o
30
o
60
o
0
90
o
150
o
120
o
150
o
120
o
180
o
30
o
60
o
90
o
30
o
60
o
0
–5 dB
–10 dB
–15 dB
90
o
20,000
–20 dB
–5 dB
–10 dB
–15 dB
–20 dB
–20 dB
–20 dB
–15 dB
–10 dB
FIGURE 3 ABBILDUNG 3 FIGURA 3 FIGURE 4 ABBILDUNG 4 FIGURA 4
SUPERCARDIOID
SUPERCARDIOÏDE
SUPERKARDIOID
SUPERCARDIOIDE
SUPERCARDIOIDE
CARDIOID
CARDIOÏDE
KARDIOID
CARDIOIDE
CARDIOIDE
OMNIDIRECTIONAL
OMNIDIRECTIONNELLE
ALLE RICHTUNGEN
OMNIDIRECCIONAL
OMNIDIREZIONALE
OMNIDIRECTIONAL
OMNIDIRECTIONNELLE
ALLE RICHTUNGEN
OMNIDIRECCIONAL
OMNIDIREZIONALE
CARDIOID
CARDIOÏDE
KARDIOID
CARDIOIDE
CARDIOIDE
SUPERCARDIOID
SUPERCARDIOÏDE
SUPERKARDIOID
SUPERCARDIOIDE
SUPERCARDIOIDE
Hz
Hz
Hz
TYPICAL FREQUENCY RESPONSE
COURBE DE RÉPONSE TYPIQUE
TYPISCHER FREQUENZGANG
RESPUESTA DE FRECUENCIA TIPICA
RISPOSTA IN FREQUENZA TIPICA
TYPICAL POLAR PATTERNS
COURBES DE DIRECTIVITÉ TYPIQUES
TYPISCHE POLARMUSTER
PATRONES DE CAPTACION POLAR TIPICOS
DIAGRAMMI POLARI TIPICI
FIGURE 1 ABBILDUNG 1 FIGURA 1
FIGURE 2
ABBILDUNG 2 FIGURA 2
FENTE
GORGE D’ENCLIQUETAGE
COUPE–VENT
STECKRASTRILLE
KERBE
WINDSCHIRM
RANURA PARA ANILLO ELASTICO
SEPARACION
PANTALLA
SCANALATURA PER MONTAGGIO A SCATTO
APERTURA
SCHERMO PARAVENTO
SLOT
WINDSCREEN
SNAP-FIT GROOVE
A
B
50.8 mm
(2 in.)
12
102.1 mm
(4 9/16 in.)
50.8 mm
(2 1/32 in.)
161.9 mm
(6 3/8 in.)
MX412D: 355.4 mm (14 in.)
MX418D: 501.7 mm (19
3
/
4
in.)
approximately 3 m
(10 ft)
FIGURE 5 ABBILDUNG 5 FIGURA 5
MIC
ELEMENT
220 pF
220 pF
FET
86E8958
W1
W2
W3
SHIELD BLINDAGE SCHILD BLINDAJE SCHERMATURA
RED ROUGE ROT ROJO ROSSO
BLACK NOIR SCHWARZ NEGRO NERO
FIGURE 8 ABBILDUNG 8
FIGURA
8
MICROPHONE WIRING DIAGRAM
1
2
3
FIGURE 6 ABBILDUNG 6 FIGURA 6
RED (Audio +)
ROUGE
ROT
ROJO
ROSSO
SHIELD
BLINDAGE
SCHILD
BLINDAJE
SCHEMATURA
Black (Audio–)
OIR
SCHWARZ
EGRO
NERO
ORANGE NARANJA ARANCIA
LED IN ENTREE DEL LED EIN
ENTRADA DE LED INGRESSO LED
WHITE BLANC WEISS-
BLANCO BLANC
SWITCH OUT COUPURE
AUSCHLATER AUS
SALIDAD DE INTERUPTER
USCITA INTERUTORE
GREEN VERT GRUN VERONE
LOGIC GROUND MASSE LOGIQUE LOGISCHE ERDE
TIERRA DE CIRCUITOS LOGICOS MASSA LOGICA
CABLE TYPE TYPE DE CABLE KABLTYP
FIGURE 7 ABBILDUNG 7 FIGURA 7
TIPO DE CABLE TIPO DE CAVO
SHURE Incorporated http://www.shure.com
United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: 847-600-2000 U.S. Fax: 847-600-1212 Intl Fax: 847-600-6446
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414
Asia, Pacific:
Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055
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Shure MX400D
The Shure MX400D is a desktop microphone with a gooseneck design, ideal for multi-purpose rooms where quick setup is required or where permanent installation is impractical. The microphone features:
- Wide dynamic range and frequency response for accurate sound reproduction
- Interchangeable cartridges for cardioid, supercardioid, or omnidirectional polar patterns
- Balanced, transformerless output for increased immunity to noise
- Programmable on/off switch and LED on/off indicator
- Logic input and output terminals for remote control or use with automatic microphone mixers
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- italiano: Shure MX400D Manuale utente
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