
MX153 -- Earset Headworn Microphone
General Description
The Shure Microflex MX153 is a professional subminiature earset microphone ideal for speech and other applica
tions requiring low-profile discreet placement where improved gain before feedback over lavalier microphones is
desired. Delivering exceptional speech clarity, the MX153 is ideal for corporate presentations, houses of worship,
A/V conferencing and live sound reinforcement. Additionally, CommShield Technology offers superior RF immuni
ty from cellular devices and digital bodypack transmitters. Available in three color options and direct TA4F connec
tivity to Shure bodypacks, the MX153 provides outstanding clarity in an extremely comfortable, over the ear de
sign.
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Features
• Subminiature, omnidirectional cartridge offers superior speech clarity and enhanced plosive protection with no
proximity effect
• Terminated with TQG/TA4F connector for direct connectivity to Shure wireless bodypack transmitters
• Ultra-lightweight, comfortable, flexible design is stable and easy to place over either ear
• CommShield Technology guards against interference from cellular RF devices and digital bodypack transmit
ters
• Kevlar reinforced, soft flex cable
• Matte black, tan, and cocoa color options available
• Includes protective storage pouch, 3 windscreens, and collar clip
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Model Variations
MX153B/O-TQG Black
MX153T/O-TQG Tan
MX153C/O-TQG Cocoa
Windscreen
The furnished windscreen provides plosive and wind protection.
• Fit windscreen over cartridge.
• To remove, simply lift windscreen over capsule.
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Using With Other Bodypack Transmitters
When connecting the microphone to anything other than a Shure wireless bodypack, make sure the device pro
vides a regulated +5 V DC (130 µA minimum).
Optional XLR Compatibility
To connect the MX153 earset to an XLR microphone input, use the RK100PK preamplifier (see Optional Acces
sories).
Phantom Power
The RK100PK preamplifier requires phantom power and performs best with a 48 Vdc supply (IEC61938). Howev
er, it will operate with slightly decreased headroom and sensitivity with supplies as low as 11 Vdc.
Most modern mixers provide phantom power. You must use a balanced microphone cable: XLR-to-XLR or XLRto-TRS.
RFI Filtering
This microphone features CommShield Technology for superior RF filtering. For best results in hostile RF envi
ronments, always use the RK100PK preamp (see Optional Accessories).
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Wearing the Earset
Fit the earset over the ear with the ear support piece placed behind the earlobe. The wire extends over the ear to
the tip of the mouth. Adjust the earset with small bends. Do not bend the boom arm beyond 20°.
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Specifications
Transducer Type
Electret Condenser
Polar Pattern
Shure Incorporated
Omnidirectional
Frequency Response
20 to 20,000 Hz
Output Impedance
N/A
Sensitivity
open circuit voltage, @ 1 kHz, typical
-41 dBV/Pa (9 mV/Pa)
Maximum SPL
1 kHz at 1% THD
[1]
[2]
2500 Ω load 107 dB SPL
1000 Ω load 107 dB SPL
Signal-To-Noise Ratio
[3]
60 dB
Dynamic Range
@ 1 kHz
2500 Ω load 73 dB
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1000 Ω load 73 dB
Self Noise
equivalent SPL, A-weighted, typical
34 dB
Common Mode Rejection
20 to 20,000 Hz
N/A
Operating Temperature Range
-18°C (0°F) to 57°C (135°F)
Polarity
Shure Incorporated
Positive pressure on diaphragm produces negative voltage on pin 3 with respect to pin 1.
Power Requirements
+1–5 V DC (500 µA max.)
Weight
19.76 g
1 Pa=94 dB SPL
THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL
S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
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Accessories
Furnished Accessories
MX153 accessory kit (3 windscreens, 1 collar clip)
Black
MX153 accessory kit (3 windscreens, 1 collar clip) Tan RPM153T
MX153 accessory kit (3 windscreens, 1 collar clip) Co
coa
Storage pouch WA153
Optional Accessories
XLR Preamplifier RK100PK
RPM153B
RPM153C
Replacement Accessories
4-Pin Mini Connector (TA4F/TQG) WA330
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Certifications
Eligible to bear CE Marking. Conforms to European EMC Directive 2004/108/EC. Meets Harmonized Standards
EN55103-1:1996 and EN55103-2:1996, for residential (E1) and light industrial (E2) environments.
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
Jakob-Dieffenbacher-Str. 12
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4
Email: info@shure.de
Note: Information in this guide is subject to change without notice. For additional information about this product,
please visit www.shure.com.
SHURE and MICROFLEX are registered trademarks of Shure Incorporat
ed. COMMSHIELD is a registered trademark of Shure Acquisition Hold
ings, Inc. KEVLAR is a registered trademark of E. I. du Pont de Nemours
and Company.
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