Shure MX412D, MX418D Specification Sheet
MODEL MX400D SERIES MICROPHONES
Model MX400D Series Microphones
Specification Sheet
OVERVIEW
Shure Microflex
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 re quired, or where permanent installation is impractical.
FEATURES
S Wide dynamic range and frequency response for accurate
sound reproduction across the audio spectrum
S Interchangeable cartridges provide the right polar pattern for
any application
S Balanced, transformerless output for increased immunity to noise
over long cable runs
S Programmable on/off switch and LED on/off indicator
S New brighter LED improves visibility under strong ambient light-
ing
S Logic input and output terminals for remote control or use with
automatic microphone mixers
S Snap-fit foam windscreen
MX400D Series microphones are miniature electret
MODEL VARIATIONS
S MX412D: 304.8 mm (12 in.) desktop mini-condenser, goose-
neck-mounted microphone.
SPECIFICATIONS
Frequency Response (Figure 1)
50 to 17,000 Hz
Polar Pattern (Figure 2)
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 diaphram produces positive voltage
on pin 2 relative to pin 3 of XLR output connector.
S MX418D: 457.2 mm (18 in.) d esktop m ini-condenser , g ooseneck-
mounted microphone.
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 3)
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)
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
Directive 89/336/EEC. Meets applicable tests and performance
criteria in European Standard EN55103 (1996) parts 1 and 2, for
residential (E1) and light industrial (E2) environments.
REPLACEMENT PARTS
Snap-Fit Foam Windscreen (4 per pkg.) RK412WS
Foam Ball Windscreen A99WS
Locking Metal Windscreen A412MWS
Replacement 3 m (10 ft) XLR Cable C120
Custom Logic Cable (specify length) 15A523/1
Omnidirectional Cartridge R183B
Supercardioid Cartridge R184B
Cardioid Cartridge R185B
Base Plate Bumpers 80A8053A
E2002, Shure Incorporated
MODEL MX412D SERIES MICROPHONES
Specification Sheet
+10
–10
+10
–10
o
180
o
150
o
120
o
20,000
90
o
60
–20 dB
–15 dB
–10 dB
–5 dB
o
30
0
0
50 100 20020
500 1,000 2,000 5,000 10,000
Hz
CARDIOID
o
180
o
150
o
120
0
50 100 20020
500 1,000 2,000 5,000 10,000
20,000
o
90
–20 dB
o
60
–15 dB
–10 dB
–5 dB
o
30
0
Hz
SUPERCARDIOID
250 Hz
500 Hz
1000 Hz
150
30
250 Hz
500 Hz
1000 Hz
150
o
30
o
o
o
120
60
o
120
90
o
60
SUPERCARDIOID
o
90
o
o
o
CARDIOID
150
o
120
o
90
o
60
30
150
o
120
o
90
o
60
o
30
o
180
o
–20 dB
–15 dB
–10 dB
–5 dB
o
0
o
180
o
–20 dB
–15 dB
–10 dB
–5 dB
0
30
2500 Hz
6400 Hz
10000 Hz
30
2500 Hz
6400 Hz
10000 Hz
150
150
o
o
120
o
90
o
60
o
o
o
120
o
90
o
60
o
+10
–10
0
102.1 mm
(4 9/16 in.)
500 1,000 2,000 5,000 10,00050 100 20020
Hz
OMNIDIRECTIONAL
TYPICAL FREQUENCY RESPONSE
Figure 1 Figure 2
approximately 3 m
(10 ft)
o
150
o
120
o
90
o
60
o
30
20,000
MX412D: 355.4 mm (14 in.)
MX418D: 501.7 mm (19
180
–20 dB
–15 dB
–10 dB
–5 dB
0
o
30
250 Hz
500 Hz
1000 Hz
150
o
o
120
o
90
o
60
o
TYPICAL POLAR PATTERNS
3
/4 in.)
o
120
o
90
o
60
OMNIDIRECTIONAL
150
o
180
o
–20 dB
–15 dB
–10 dB
–5 dB
o
30
0
2500 Hz
6400 Hz
10000 Hz
o
150
o
120
o
90
o
60
o
30
161.9 mm
(6 3/8 in.)
Figure 3
2
50.8 mm
(2 1/32 in.)
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