Shure KSM137 User Manual

7/13/22, 10:44 AM
KSM137 User Guide
https://pubs.shure.com/guide/KSM137/en-US?_gl=1*gkrqp2*_ga*MjEyMjg5NjA0NS4xNjU3NzA1NDc3*_ga_DB3CR9SF0C*MTY1NzcwNTQ3Ny
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KSM137
Instrument Microphone
Thank you for selecting the KSM series from Shure.
Over 90 years of audio experience has contributed to making this one of the finest
microphones available.
If you have any questions not answered in this guide, please contact Shure Applications
Engineering at 847-600-8440, Monday through Friday, from 8:00 am to 4:30 pm, CST. In
Europe, call 49-7262-92490. In Asia, call 852-2893-4290. Our web address is www.shure.com.
General Description
The KSM137 is a premium, end-address, condenser microphone with a cardioid polar
pattern engineered for highly critical studio recording and live sound productions. Its class
A, discrete, transformerless preamplifier provides extremely transparent sound capture, and
a three position switchable pad and low-cut filter allows for handling of extremely high
sound pressure levels (SPL) and controlled bass response. Versatile, durable, and precise, the
KSM137 is an outstanding microphone for both live and studio applications.
Features
A highly consistent cardioid polar pattern
Ultra-thin, 2.5 μm 24-karat gold-layered, low-mass Mylar diaphragm for superior
transient response
Class A, discrete, transformerless preamplifier for transparency, extremely fast
transient response, no crossover distortion, and minimal harmonic and inter-
modulation distortion
Premium electronic components, including gold-plated internal and external
connectors
Subsonic filter eliminates low frequency rumble (less than 17 Hz) caused by
mechanical vibration
Three-position attenuation switch (0 dB, 15 dB, and 25 dB) for handling extremely
high SPLs
Three-position low-frequency filter switch reduces stand vibration noise and
counteracts proximity effect
®
Publications
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Shure KSM137 Specifications

General

Type	Studio microphone
Microphone frequency	20 - 20000 Hz
Microphone sensitivity	-37 dB
Microphone direction type	Cardioid
Device interface	XLR-3
Connectivity technology	Wired
Operating voltage	48 V
Number of products included	1 pc(s)
Product color	Gold

Weight and Dimensions

Depth	20 mm
Width	122 mm
Microphone weight	100 g

Summary

General Description

Features

Applications

Mounting the Microphone

Selecting Low-Frequency Response

Flat Response

Provides the most natural sound in most applications.

Low Frequency Cutoff

18 dB-per-octave cutoff at 80 Hz to reduce rumble and room noise.

Low Frequency Rolloff

6 dB-per-octave rolloff filter at 115 Hz for proximity effect.

Setting Attenuation

0 dB Attenuation

For "quiet" to "normal" sound levels.

-25 dB Attenuation

For close proximity to extremely loud sound sources.

Load Impedance

Stereo Pair Stand Adapter

Installation

Stereo Techniques

Specifications Overview

Cartridge Type

Electret Condenser

Polar Pattern

Cardioid

Frequency Response

20 to 20,000 Hz

Output Impedance

150 Ω

Detailed Specifications

Maximum SPL

Maximum Sound Pressure Level at 1 kHz.

Signal-to-Noise Ratio

Ratio of signal to self-noise, typically 80 dB.

Dynamic Range

Range between self-noise and clipping level.

Clipping Level

Level at 1% THD for 20 Hz to 20 kHz.

Additional Specifications

Self Noise

Equivalent SPL, A-weighted, typical 14 dB SPL-A.

Common Mode Rejection

≥50 dB from 10 to 100,000 kHz.

Attenuator Switch Settings

Available settings: 0, -15, -25 dB.

Low-Frequency Filter Switch Settings

Flat, -6 dB/octave below 115 Hz, or –18 dB/octave below 80 Hz.

Connector Type

Three-pin professional audio (XLR), male, balanced.

Polarity

Positive pressure on diaphragm produces positive voltage on pin 2.

Power Requirements

11–52 V DC phantom power (IEC-61938) 4.7 mA, maximum.

Net Weight

100 g (3.5 oz.).

Accessories

Furnished Accessories

Carrying Case and A27M stereo bar included.

Optional Accessories

Includes windscreen, clips, and isolation mounts.

Certifications