Shure KSM137/SL Datasheet
Product Specifications
Includes two KSM137, two Stand Adapters, two Windscreens, A27M Stereo Microphone Adapter and Carrying Case
KSM137 End-Address Cardioid Condenser Microphone
Overview
The KSM137 is a premium end-address cardioid condenser microphone engineered for highly critical studio recording and live sound productions.
Its class A, discrete, transformerless preamplifier provides extremely natural response and transparent sound capture, and a three position
switchable pad allows for handling of extremely high sound pressure levels. 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 intermodulation 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 switchable pad (0 dB, 15 dB, and 25 dB) for handling extremely high sound pressure levels (SPLs).
• Three-position switchable low-frequency filter reduces background noise and counteracts proximity effect.
Available Models
KSM137/SL
KSM137/SL STEREO
Specifications
Cartridge Type Electret Condenser
Frequency Response 20 to 20,000 Hz
Output Impedance 150 ohms
Sensitivity
(at 1kHz, open circuit voltage)
Power Requirements 48 Vdc phantom. 4.7 mA
Common Mode Rejection >50 dB, 10 Hz to 100 kHz
Polarity Positive pressure on front diaphragm produces positive voltage on output pin 2 relative to pin 3
Polar Pattern Cardioid
Sensitivity
(at 1 kHz, open circuit voltage)
Self-noise
(typical, equivalent SPL;
A-weighted)
Maximum SPL
(1 kHz at 1% THD)THD of microphone
preamplifier when applied input signal is
equivalent to cartridge output at specified SPL
Clipping Level
(20Hz-20 kHz at 1% THD)
Dynamic Range
(at 1 kHz)
Signal to Noise ratio
(referenced at 94 dB SPL at 1 kHz)
Weight Net: 100 g (3.5 oz.)
Furnished Accessories
A100C
A27M
Case
Stereo Microphone Adapter
Includes Stand Adapter, Windscreen and Carrying Case
−37 dBV/Pa
1 Pascal=94 dB SPL
−37 dBV/Pa
1 Pascal=94 dB SPL
14 dB
1000 ohms load: 134 dB (159 dB, -25 Pad)
2500 ohms load: 139 dB (164 dB, -25 Pad)
5000 ohms load: 145 dB (170 dB, -25 Pad)
1000 ohms load: 3 dBV
2500 ohms load: 9 dBV
5000 ohms load: 15 dBV
1000 ohms load: 120 dB
2500 ohms load: 125 dB
5000 ohms load: 131 dB
14 dB
A100WS
A57F
Windscreen
Stand Adapter
KSM137
250 Hz
500 Hz
1000 Hz
www.shure.com
Polar Pattern
2500 Hz
6400 Hz
10000 Hz
©2010 Shure Incorporated
Frequency Response
15 cm
60 cm
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