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By: Shure
Microphones, Headphones & Wireless systems
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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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Audio Video Supply Inc.
4542 Ruffner St. Suite 220
San Diego, CA 92111
Prices and specifications subject to change without notice.