Shure Microflex MX395 User manual

www.shure.com
© 2014 Shure Incorporated
27A3237 (Rev. 6)
Low-Profile Boundary Microphone

MX395 Low-Profile Boundary
Microphone
General Description
Shure®MX395 low-profile microphones are for use
in boardrooms and other sites where aesthetics
are important. The MX395 is only 2.5 cm (1 in.) in
diameter, and extends just 2 cm above the mount-
ing surface when installed. Despite its small size,
the MX395 delivers clear, high quality sound.
Features
• Low profile, aesthetic design
• Wide dynamic range and smooth frequency
response
• RF filtering with CommShield®technology
• Available with logic-controlled bi-color status
indicator
Model Variations
The MX395 is available in cardioid, omnidirection-
al, and bidirectional polar patterns, with or without
an LED status indicator, with a black, white, or
aluminum finish.
Furnished Accessories
Wing Nut
Rubber Isolation Ring
5-pin XLR, Female (MX395-LED variations)
Polar Patterns
The polar pattern is indicated by the molded grille.
Cardioid
Omnidirectional
Bidirectional
Microphone Placement
For best low-frequency response and rejection
of background noise, place the microphone on a
large, flat surface, such as a floor, table, or lectern.
To reduce reverberance, avoid reflective surfaces
above or to the side of the microphone, such as
beveled sides of pulpits or overhanging shelves.
Installation
Install the microphone into a tabletop as shown.
Important:
• Align indentation toward talker
• Do not over tighten the wing nut, as this reduces
shock isolation
DIP Switches
Set DIP Switch 1 up to engage the low cut filter,
which attenuates frequencies by 6 dB per octave
below 150 Hz.
Switch Down (default) Up
1 Full frequency
response
Low cut filter
2 -- --
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 connecting
to devices that do not have internal "pull-up resis-
tor" 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
GND
MX395
Device
Logic Port (I/O)
Logic Connection
Connection to device with internal "pull-up
resistor" logic circuit
Green
Red
Logic HIGH (+5 V)
Logic LOW (0 V)
LED Indicator Response to Logic Signal at Pin 5
Pin Assignments
Audio −
Audio +
3-Pin XLR
42
51
3
Audio −
Audio +
Logic (LED IN)
5-Pin XLR
2

Specifications
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 Omnidirectional
MX395/C Cardioid
MX395/BI Bidirectional
Output Impedance
170Ω
Output Configuration
Active Balanced
Sensitivity
@ 1 kHz, open circuit voltage
Cardioid −34dBV/Pa(20mV)
Omnidirectional −29dBV/Pa(36mV)
Bidirectional −35dBV/Pa(18mV)
1 Pa=94 dB SPL
Maximum SPL
1kHzat1%THD,1kΩload
Cardioid 120 dB
Omnidirectional 115 dB
Bidirectional 121 dB
Equivalent Output Noise
A-weighted
Cardioid 29 dB SPL
Omnidirectional 23 dB SPL
Bidirectional 27 dB SPL
Signal-to-Noise Ratio
Ref. 94 dB SPL at 1 kHz
Cardioid 65 dB
Omnidirectional 72 dB
Bidirectional 67 dB
Dynamic Range
1kΩload,@1kHz
Cardioid 91 dB
Omnidirectional 92 dB
Bidirectional 95 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
137 g (0.30 lbs)
Certifications
Meets essential requirements of all applicable
European Directives.
Eligible for CE marking.
The CE Declaration of Conformity can be ob-
tained from Shure Incorporated or any of its
European representatives. For contact information
please visit www.shure.com
The CE Declaration of Conformity can be ob-
tained from: www.shure.com/europe/compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
Jakob-Dieffenbacher-Str. 12
75031 Eppingen, Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Environmental Conditions
Operating Temperature –18–57°C
(0–135°F)
Storage Temperature –29–74°C
(–20–165°F)
Relative Humidity 0–95%
Power Requirements
MX395 11–52 V DC, 2.0 mA
MX395-LED 48–52VDC,8.0mA
Preamp Gain
If necessary, the preamplifier gain can be reduced
by 12 dB. Contact an authorized Shure service
center for information.
3

MX395/C
MX395/BI
MX395/O
3 3/8 in
(86 mm)
4 in
(101 mm)
7/8 in
(22 mm)
1 1/4 in
(32 mm)
7/16 in
(12 mm)
20
15
10
5
0
-30
-25
-20
-15
-10
-5
dB
Hz
20 100 1k 10k 20k
0,6 m (2 ft.) from sound source
20
15
10
5
0
-30
-25
-20
-15
-10
-5
dB
Hz
20 100 1k 10k 20k
0,6 m (2 ft.) from sound source
20
15
10
5
0
-30
-25
-20
-15
-10
-5
dB
Hz
20 100 1k 10k 20k
0,6 m (2 ft.) from sound source
www.shure.com
Asia, Pacific:
Shure Asia Limited
22/F, 625 King’s Road
North Point, Island East
Hong Kong
Phone: [phone]
Fax: [phone]
Email: [email protected]
United States, Canada, Latin
America, Caribbean:
Shure Incorporated
5800 West Touhy Avenue
Niles, IL 60714-4608 USA
Phone: [phone]
Fax: [phone] (USA)
Fax: [phone]
Email: [email protected]
Europe, Middle East, Africa:
Shure Europe GmbH
Jakob-Dieffenbacher-Str. 12,
75031 Eppingen, Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]