Shure KSM137/SL ST PAIR Studio Instrument Microphone Overview
Shure KSM137/SL ST PAIR Studio Instrument Microphone Product Overview
The Shure KSM137/SL ST PAIR Studio Instrument Microphone is a pair of end-address condenser microphones. They feature a highly consistent cardioid polar pattern.
The KSM137 pair has been engineered for detailed studio use but it is dynamic enough for live applications, withstanding high SPLs while its low self-noise and extended frequency response mean it is ideal for recording musical instruments.
- 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
- 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
- Low self-noise
- Exceptional reproduction of low-frequency sounds
- Superior common mode rejection and suppression of RFI (radio frequency interference)
- Great for Close miking of acoustic instruments such as piano, guitar, violins, drums, and percussion; Overhead miking of drums and percussion instruments; Electric guitar amplifiers; Brass and woodwind instruments; Room ambience pick-up (guitar amplifier or drums); Orchestras, choirs, wind ensembles; Low-frequency instruments such as double bass and kick drum
- A137SPC Carrying Case, Two x A100WS Windscreens and Two x A57F Stand Mounts included with this pair of microphones
- Cartridge Type: Permanently Biased Condenser
- Frequency Response: 20-20,000 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 (IEC-268-15/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
- Self-noise (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
