Shure SM137 Instrument Condenser Microphone

The SM137 has a frequency response that combines the best of both worlds, a smooth high-end and a tightly controlled low-end. Made using an ultra-thin diaphragm, this mic is what is needed when picking up the subtle nuances of an instrument. Providing a 15db pad Shure's SM137 has natural sound reproduction for quiet acoustic and high volume applications.

Road worthy, don't forget to take this mike on tour. Made with rugged nearly indestructable chassis', Shure's SM series of mics were built to take the punishment of night-after-night gigging.

Features
Ultra-thin diaphragm for smooth high end and tight, controlled low end

15dB pad for performance consistency across a wider range of high SPL sources

Low self-noise and transformerless preamplifier circuitry

Cardioid polar pattern

Technical Info

Cartridge Type: Permanently Biased Condenser

Frequency Response: 20­ to 20,000 Hz

Directional Polar Pattern: Cardioid

Output Impedance: 150 ohms (actual)

Attenuation Switch: 0 dB or 15 dB attenuation

Phantom Power: 48 Vdc +/- 4 Vdc (positive pins 2 and 3)

Current Drain: 5.2 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

Sensitivity: -41 dBV/Pa (typical, at 1000 Hz; 1 Pa = 94 dB SPL)

Self­noise: 19 dB (typical, equivalent SPL; A-weighted (IEC 651))

Maximum SPL: @ 1000 Hz
- 5000 ohms load (Attenuator on): 150 (165 dB)
- 2500 ohms load (Attenuator on): 144 (159) dB
- 1000 ohms load (Attenuator on): 139 (154 dB)

Output Clipping Level:
- 5000 ohms load: 15 dBV
- 2500 ohms load: 9 dBV
- 1000 ohms load: 3 dBV

Dynamic Range: (Attenuator On)
- 5000 ohms load: 133 (136) dB
- 2500 ohms load: 128 (130 dB)
- 1000 ohms load: 122 (125) dB

Signal to Noise Ratio: 75 dB

Dimensions:
- Diameter: 0.95 inches (24 mm)
- Length: 6.375 inches (162 mm)

Weight: 6.9 oz (195 grams)

Want an instrument mic with smooth highs and tight lows? Look no further. The ultra-thin diaphragm picks up the subtle nuances of any instrument source, and the rock-solid construction can take a beating and still perform night after night.