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LED Logic
For models equipped with an LED, use the includ-
ed 5-pin XLR connector to wire the microphone to
an automatic mixer or other logic device.
Note: Connect the LED IN to the gate output to il-
luminate the LED when the channel is gated on.
Do not use the relay ports on Crestron and AMX
devices. Use the I/O logic ports instead.
The LED logic may not function when connect-
ing to devices that do not have internal "pull-up
resistor" logic circuits, such as ClearOne DSP
products. External pull-up resistor circuits can be
added for each microphone. Vistit www.shure.
com/FAQ for detailed instructions.
+5 V
Green
0 V c.c.
+5 V
5 V c.c.
Pin Assignments
Audio − Audio +
3-Pin XLR
1
5
2
4
3
Logic (LED IN)
Audio −
Audio +
5-Pin XLR
4
All measurements taken with microphone mounted on a wooden
surface (76 x 76 cm)
Cartridge Type
Electret Condenser
Frequency Response
50–17000 Hz
Polar Pattern
MX395/O
MX395/C
MX395/BI
Output Impedance
170 Ω
Output Configuration
LED
Active Balanced
Sensitivity
@ 1 kHz, open circuit voltage
Cardioid
Omnidirectional
Bidirectional
1 Pa=94 dB SPL
LED
Maximum SPL
Red
1 kHz at 1% THD, 1 kΩ load
Cardioid
Omnidirectional
Bidirectional
Equivalent Output Noise
A-weighted
Cardioid
Omnidirectional
Bidirectional
Signal-to-Noise Ratio
Ref. 94 dB SPL at 1 kHz
Cardioid
Omnidirectional
Bidirectional
Specifications
Omnidirectional
Cardioid
Bidirectional
−35 dBV/Pa (18 mV)
−28 dBV/Pa (42 mV)
−37 dBV/Pa (14 mV)
121 dB
114 dB
123 dB
28 dB SPL
21 dB SPL
29 dB SPL
66 dB
73 dB
65 dB
Dynamic Range
1 kΩ load, @ 1 kHz
Cardioid
93 dB
Omnidirectional
93 dB
Bidirectional
94 dB
Common Mode Rejection
10 to 100,000 kHz
45 dB, minimum
Preamplifier Output Clipping Level
at 1% THD
−8 dBV (0.4 V)
Logic Connections
LED IN
Active low (≤1.0V), TTL
compatible. Absolute
maximum voltage: -0.7V
to 50V.
Net Weight
136 g (0.30 lbs)
Environmental Conditions
Operating
–18–57°C (0–135°F)
Temperature
Storage
–29–74°C (–20–165°F)
Temperature
Relative Humidity 0–95%
Power Requirements
MX395
11–52 V DC, 2.0 mA
MX395-LED
48–52 V DC, 8.0 mA
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