Cardioid Condenser Instrument Microphone

Model# SU-KSM137/SL

Cardioid condenser microphone offers smooth and extremely focused reproduction of the original sound source. Ideal for a wide range of instruments ranging from percussion to wind, strings to brass, and piano to guitar. Includes KSM137/SL, case, windscreen, clip, and user guide. Visit the KSM137 Instrument Microphone page on Shure.com for more information.

Features
• A highly consistent cardioid polar pattern.	• Premium electronic components, including gold-plated internal and external connectors.
• Ultra-thin, 2.5 �m 24 karat gold-layered, low mass Mylar� diaphragm for superior transient response.	• Subsonic filter eliminates low frequency rumble (less than 17 Hz) caused by mechanical vibration.
• Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response, no crossover distortion, and minimal harmonic	• Three-position switchable pad (0 dB, 15 dB, and 25 dB) for handling extremely high sound pressure levels (SPLs).
• and intermodulation distortion.	• Three-position switchable low-frequency filter reduces background noise and counteracts proximity effect.

Details
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.)