Shure KSM137/SL - Cardioid Condenser Microphone with Windscreen & Case

Features:

• A highly consistent cardioid polar pattern

• 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

• Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)

• 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

Performance Characteristics

• 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

Applications

Some typical applications for the KSM137 are listed below. Microphone use is a matter of personal taste and the KSM137 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

Specifications:

Cartridge Type

Permanently Biased Condenser

Frequency Response

20­ to 20,000 Hz

Directional Polar Pattern

Cardioid

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, 122 mm (4.8 in.) long;

100 grams (3.5 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 at 1 kHz

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.

UPC: 042406112291