Shure SM137 Microphone

Shure SM137 Microphone

The Shure SM137 is a high-quality condenser microphone designed for professional recording and live sound applications. With its ultra-thin diaphragm, the SM137 captures detailed and precise audio, making it ideal for instruments like acoustic guitars, drums, and woodwinds. It features a cardioid polar pattern, which focuses on sound directly in front of the mic while minimizing background noise, ensuring clarity even in noisy environments. The microphone also includes a 15 dB pad, allowing it to handle high sound pressure levels (SPL) without distortion, making it versatile for both delicate and loud sources. Its rugged construction and compact design ensure durability and ease of use in various settings.

Features

• Cardioid polar pattern to reduce the pickup of unwanted sounds
• 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
• Two-position switchable pad (0 dB and 15 dB) for handling extremely high sound pressure levels (SPLs)

Specifications

• Type:    Electret Condenser
• Frequency Response:    20 to 20,000 Hz
• Polar Pattern:    Cardioid
• Impedance:    150 O (actual)
• Sensitivity (at 1 kHz, Open circuit voltage):    -41 dBV/Pa 1 Pascal=94 dB SPL
• Maximum SPL (1 kHz, < 1% THD);    1000 O load: 139 dB (154 dB, Pad on) and 2500 O load: 144 dB (159 dB, Pad on)
• Signal-to-Noise Ratio (referenced at 94 dB SPL at:    75 dB S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
• Dynamic Range (at 1 kHz):    1000 O load: 122 dB and 2500 O load: 128 dB
• Common Mode Rejection (20 Hz to 20 kHz):    > 50 dB
• Clipping Level (20Hz-20 kHz at 1% THD):    1000 O load: 3 dBV, 2500 O load: 9 dBV THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL
• Self Noise (typical, equivalent SPL, A-weighted)    19 dB
• Polarity:    Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
• Weight:    195 g
• Switch:    Attenuator: -15 dB
• Dimensions:    162 mm L x 24 mm
• Connector:    Three-pin professional audio (XLR), male
• Power Requirements:    48 Vdc phantom, 5.2 mA

Contents

• (1) Shure SM137 Cardiod Condenser Microphone
• (1) Zippered Carrying Pouch
• (1) Microphone Clip
• (1) Operator's Instructions