DISC Shure SM 27 Condenser Mic

Full Description

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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.

Shure KSM27 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

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

Shure KSM27 Specifications

Cartridge Type

Externally Biased Condenser

Frequency Response

20 to 20,000 Hz

Directional Polar Pattern

Cardioid

Output Impedance

EIA Rated at 150 ohms (140 ohms 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 +/- 4 Vdc (IEC­268­15/DIN 45 596), positive pins 2 and 3

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

Self­noise (typical, equivalent SPL;

A­weighted, IEC 651)

14 dB

Maximum SPL at 1000 Hz

2500 ohm load (Attenuator on): 137 (152) dB

1000 ohm load (Attenuator on): 132 (147) dB

Output Clipping Level*

2500 ohm load: 7 dBV

1000 ohm load: 1 dBV

Dynamic Range

2500 ohm load: 123 dB

1000 ohm load: 118 dB

Signal to Noise ratio**

80 dB