Shure KSM141/SL Studio Condenser Microphone

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  • Shure KSM141/SL Studio Condenser Microphone
  • Shure KSM141/SL Studio Condenser Microphone
  • Shure KSM141/SL Studio Condenser Microphone


The KSM141 is a dual-pattern end-addressed condenser microphone with a rotating collar, allowing easy switching between a consistent cardioid or true omnidirectional polar pattern for smooth and extremely focused sound reproduction.

Designed for studio use, yet rugged enough for live applications, the KSM141 can withstand extremely high sound pressure levels (SPL). Its low self-noise and extended frequency response make it ideal for recording musical instruments.


  • A mechanical polar pattern switch for highly consistent cardioid and true omnidirectional polar patterns. Provides flexibility in a wide variety of recording applications
  • Ultra-thin, 2.5 micron, 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 to reduce background noise and counteract proximity effect
  • Extended frequency response
  • Low self-noise
  • Exceptional reproduction of low-frequency sounds
  • Can withstand high sound pressure levels (SPL)
  • High output level
  • No crossover distortion
  • Uniform polar response
  • Superior common mode rejection and suppression of radio frequency interference

Some typical applications for the KSM141 are listed below. Microphone use, however, is a matter of personal taste. The KSM141 may be used for a variety of applications other than those listed.

  • Acoustic instruments -- such as piano, guitar, drums, percussion, strings
  • Wind instruments -- brass and woodwind
  • Low frequency instruments -- such as double bass, electric bass, kick drum
  • Overhead miking -- drums or percussion
  • Ensembles -- choral or orchestral
  • Room ambiance pick-up -- guitar amplifier or drums

Both the acoustic environment and microphone placement strongly affect the sound obtained from miking a source. You may need to experiment with microphone placement and room treatments to achieve the best overall sound for each application.

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Cartridge Type Electret Condenser
Frequency Response 20 to 20,000 Hz
Output Impedance 150 ohms (actual)
Power Requirements 48 Vdc phantom, 4.7 mA
Common Mode Rejection >50 dB, 50 Hz to 20 kHz
Polarity Positive pressure on front diaphragm produces positive voltage on output pin 2 relative to pin 3
Polar Patterns Cardioid, Omnidirectional
Sensitivity (typical; at 1000 Hz; 1 Pa = 94 dB SPL) -37 dBV/Pa
Self-noise (typical, equivalent SPL; A-weighted, IEC 651) 14 dB
Maximum SPL @ 1000 Hz
5000 ohms load 134 dB (159 dB, -25 Pad)
2500 ohms load 139 dB (164 dB, -25 Pad)
1000 ohms load 134 dB (159 dB, -25 Pad)
Output Clipping Level
5000 ohms load 15 dBV
2500 ohms load 9 dBV
1000 ohms load 3 dBV
Dynamic Range
5000 ohms load 131 dB
2500 ohms load 125 dB
1000 ohms load 120 dB
Signal to Noise ratio 80 dB
Weight Net 156 g (5.5 oz.)
Switch Attenuator 0, −15, −25 dB
Low Frequency Response flat; -6 dB/octave below 115 Hz; -18 dB/octave below 80 Hz

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