Details 

The Shure KSM27 is a side-address condenser microphone with a cardioid polar pattern. Designed for studio use, but rugged enough for live applications, the KSM27 has an externally biased, 1-inch diaphragm, extremely low self-noise, and an extended frequency response specially tailored for vocal tracking and instrument recording.

Features

• Cardioid polar pattern - the most commonly used pattern for both studio and live applications
  
• 1 inch, externally biased, ultra-thin, 24 Karat gold-layered, low mass, Mylar® diaphragm provides superior transient response
  
• Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response and no crossover distortion, while minimizing harmonic and intermodulation distortions
  
• Premium electronic components and gold-plated internal and external connectors
  
• Subsonic filter eliminates rumble from mechanical vibration below 17 Hz
  
• Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
  
• 3-position switchable low-frequency filter helps reduce unwanted background noise or counteract proximity effect
  
• Integrated three-stage 'pop" protection grille reduces plosives and other breath noise
  
• Internal shock mount reduces handling and stand noise  

Performance Characteristics

• Extended frequency response
  
• Low self noise
  
• Exceptional low-frequency reproduction
  
• High output level
  
• High input SPL capability
  
• No crossover distortion
  
• Extremely uniform polar response
  
• Superior common mode rejection and suppression of radio frequency interference
  
• ShureLockTM Rubber Isolated Shock Mount
  
• Protective Velveteen Pouch

Specifications 

• Cartridge Type Externally Biased Condenser
  
• Frequency Response 20 to 20,000 Hz
  
• Directional Polar Pattern Cardioid
  
• Output Impedance EIA Rated at 150 Ω (140 Ω actual)
  
• Attenuation Switch 0 or 15 dB attenuation
  
• Low Frequency response switch flat; –6 db/octave below 115 Hz; –18 dB/octave below 80 Hz
  
• Phantom Power 48 Vdc
  
• Current Drain 5.4 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 53.0 mm (2.08 in.) maximum body diameter, 156.2 mm (6.15 in.) long; 642 grams (22.6 oz.)
  
• Sensitivity (typical, at 1000 Hz; 1Pa = 94 dB SPL) –37 dBV/Pa
  
• Self–noise (typical, equivalent SPL; A–weighted, IEC 651) 14 dB
  
• Signal to Noise ratio** 80 dB

 Applications

Some typical applications for the KSM27 are listed below. Microphone use, however, is a matter of personal taste. The KSM27 may be used for a variety of applications other than those listed.

• Voice -- solo, background, voice-over, broadcasting
  
• Acoustic instruments -- such as piano, guitar, drums, percussion, strings
  
• Electric instruments such as guitar and bass
  
• 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, especially with a high resolution microphone like the KSM27. You may need to experiment with microphone placement and room treatments to achieve the best overall sound for each application.

What’s Included

ShureLockTM Rubber Isolated Shock Mount

Protective Velveteen Pouch

Other Information

Manual