The SM137 is a versatile, flat-response cardioid condenser probe microphone.
The SM137 has an ultra-thin diaphragm for a frequency response that combines a smooth high-end with a tight, controlled low-end and a 15db pad for natural sound reproduction in both acoustic and high volume performance applications.
Features:
• Cardioid polar pattern to reduce the pickup of unwanted sounds
• Ultra-thin, 2.5um 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
• Two-position switchable pad (0 dB and 15 dB) for handling extremely high sound pressure levels (SPLs)
Performance Characteristics
• Extremely uniform polar response
• Extended frequency response
• Minimal self-noise
• Exceptional low-frequency reproduction
• Able to withstand high SPLs
• High output level
• No crossover distortion
• Superior common-mode rejection and suppression of radio frequency interference (RFI)
Applications
- Brass and woodwind instruments
- Orchestras, choirs, and wind ensembles
- Overhead miking of drums and percussion instruments
- Close-miking of acoustic instruments such as piano, guitar, violins, drums, and percussion
- Low-frequency instruments such as double bass and kick drum
- Electric guitar and bass amplifiers
- Vocals and speech
- Room ambience
Specifications
Type: Electret Condenser
Frequency Response: 20 to 20,000 Hz
Polar Pattern: Cardioid
Output Impedance: 150Ω
Sensitivity: -41 dBV/Pa
Self Noise: 19 dB SPL-A
