The Shure® SM137 is a versatile, flat-response cardioid probe microphone with an ultra-thin diaphragm. Its frequency response combines smooth high-end and tight, controlled low-end. A 15 dB pad provides natural, consistent sound reproduction in both acoustic and high-volume performance applications.
Note: Sound quality is strongly affected by microphone location and room acoustics. To achieve the best overall sound for a particular application, it may be necessary to experiment with microphone placement and room treatments.
Use the supplied microphone mount with floor or boom stands. Visit www.shure.com for more mounting options:
The attenuation switch lets you reduce the signal level without altering the frequency response. This can prevent extremely loud sounds from overloading the microphone.
|0 dB||For “quiet” to “normal” sound levels.|
|-15 dB||For use with extremely loud sound sources such as drums, horns, or loud guitar cabinets.|
The microphone grille consists of 3 separate mesh layers that act as an integral pop filter. This helps reduce wind and breath noise. Depending on the performer, an external pop-protection screen or windscreen may be necessary when close-miking vocalists.
Maximum SPL capability, output clipping level, and dynamic range vary with the input load impedance of the preamplifier to which you connect the microphone. Shure recommends a minimum input load impedance of 1000 Ω. Most modern microphone preamplifiers meet this requirement. Higher impedance results in better performance for these specifications.
This microphone requires phantom power and performs best with a 48 Vdc supply (IEC-61938). However, 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 XLR-to-TRS.
20 to 20,000 Hz
150 Ω (actual)
(at 1 kHz, open circuit voltage)
-41 dBV/Pa 
(1 kHz at 1% THD)
|1000 Ω load||139 dB (154 dB, PAD ON)|
|2500 Ω load||144 dB (159 dB, PAD ON)|
(Ref. 94 dB SPL at 1 kHz)
75 dB 
(at 1 kHz)
|1000 Ω load||120 dB|
|2500 Ω load||125 dB|
(10 Hz to 100 kHz)
(20 Hz to 20 kHz, at 1% THD )
|1000 Ω load||3 dBV|
|2500 Ω load||9 dBV|
(typical, equivalent SPL, A-weighted)
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
195 g (6.9oz.)
Three-pin professional audio (XLR), male
48 V DC phantom power, 5.2 mA
|Black Foam Windscreen for PGA81, SM94 and SM137||A3WS|
|Microphone Clip for SM58, SM57, SM87A, BETA87A, BETA87C, PGA57, PGA58, PGA48, PGA81||A25D|
|Shock Stopper® Isolation Mount||A55M|
|Shock Stopper Isolation Mount||A55HM|
|Popper Stopper® Pop Filter with Metal Gooseneck and Microphone Stand Clamp||PS-6|
This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.
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
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4