SHURE
KSM141 Dual Pattern Instrument Microphone Installed Microphones

• 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

• 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.

• KSM141/SL with windscreen and carrying case, champagne finish
• KSM141/SL STPAIR with two KSM141 mics, two windscreens, one carrying case, champagne finish

• Cartridge Type : Permanently Biased Condenser
• Frequency Response : 20 to 20,000 Hz
• Directional Polar Pattern : Cardioid/Omnidirectional
• Output Impedance : 150 ohms (actual)
• Attenuation Switch : 0 dB, 15 dB, or 25 dB attenuation
• Low Frequency Response Switch
  Flat; -6 db/octave below 115 Hz;
  -18 dB/octave below 80 Hz
• Phantom Power : 48 Vdc +/- 4 Vdc (IEC­268­15/DIN 45 596), positive pins 2 and 3
• Current Drain : 4.65 mA typical at 48 Vdc
• Common Mode Rejection : >50 dB, 20 Hz to 20 kHz
• Polarity : Positive pressure on diaphragm produces positive voltage on output pin 2 relative to pin 3
• Dimensions and Weight : 20 mm (0.8 in.) diameter, 146 mm (5.75 in.) long; 156 grams (5.5 oz.)
• Sensitivity (typical, at 1000 Hz; 1 Pa = 94 dB SPL) : ­-37 dBV/Pa
• Self­noise (typical, equivalent SPL; A-weighted, IEC 651) : 14 dB
• Maximum SPL
  5000 ohm load (Attenuator on): 145 (160, 170) dB
  2500 ohm load (Attenuator on): 139 (154, 164) dB
  1000 ohm load (Attenuator on): 134 (149, 159) dB
• Output Clipping Level*
  5000 ohm load: 15 dBV
  2500 ohm load: 9 dBV
  1000 ohm load: 3 dBV
• Dynamic Range
  5000 ohm load: 131 dB
  2500 ohm load: 125 dB
  1000 ohm load: 120 dB
• Signal to Noise Ratio** : 80 dB
  
  *20 Hz to 20 kHz; THD < 1%. THD of the microphone preamplifier when applied input signal is equivalent to the cartridge output at specified SPL.
  **S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.