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By: Shure
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Microphones, Headphones & Wireless systems
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Instrument Microphone
The Shure KSM Microphone Series KSM 137 is an end-address condenser microphone with a single cardioid polar pattern. Designed for studio use, yet rugged enough for live applications, the KSM137 can withstand extremely high sound pressure levels (SPL). Its low self-noise and extended frequency response make it ideal for recording instruments.

Versatile, durable, and precise, the KSM-137 is an outstanding microphone for instruments ranging from percussion to wind, strings to brass, and piano to guitar.
A highly consistent cardioid polar pattern
Ultra-thin, 2.5 µm 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 reduces background noise and counteracts proximity effect
Cartridge Type Electret Condenser
Frequency Response 20 to 20,000 Hz
Output Impedance 150 ohms
Sensitivity (at 1kHz, open circuit voltage) -37 dBV/Pa; 1 Pascal=94 dB SPL
Power Requirements 48 Vdc phantom. 4.7 mA
Common Mode Rejection >50 dB, 10 Hz to 100 kHz
Polarity Positive pressure on front diaphragm produces positive voltage on output pin 2 relative to pin 3
Polar Pattern Cardioid
Sensitivity (at 1 kHz, open circuit voltage) -37 dBV/Pa; 1 Pascal=94 dB SPL
Self-noise (typical, equivalent SPL; A-weighted) 14 dB
Maximum SPL (1 kHz at 1% THD)THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL 1000 ohms load: 134 dB (159 dB, -25 Pad); 2500 ohms load: 139 dB (164 dB, -25 Pad); 5000 ohms load: 145 dB (170 dB, -25 Pad)
Clipping Level (20Hz-20 kHz at 1% THD) 1000 ohms load: 3 dBV; 2500 ohms load: 9 dBV; 5000 ohms load: 15 dBV
Dynamic Range (at 1 kHz) 1000 ohms load: 120 dB; 2500 ohms load: 125 dB; 5000 ohms load: 131 dB
Signal to Noise ratio (referenced at 94 dB SPL at 1 kHz) 14 dB
Weight Net 100 g (3.5 oz.)



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Prices and specifications subject to change without notice.