The Shure SM137 is a versatile, flat-response cardioid condenser instrument microphone with an ultra-thin diaphragm for a frequency response that combines a smooth high-end with a tight, controlled low-end. It boasts a 15db pad for natural sound reproduction in both acoustic and high volume performance applications.
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
Type | Electret Condenser |
Frequency Response | 20–20000 Hz |
Polar Pattern | Cardioid |
Sensitivity (at 1 kHz , open circuit voltage) | −41 dBV/Pa 1 Pascal=94 dB SPL |
Impedance | 150 Ω |
Dynamic Range | 1000 Ω load: 122 dB 2500 Ω load: 128 dB |
Common Mode Rejection 20Hz -20 KHz | >50 dB |
Maximum SPL | 1000 Ω load: 139 dB 2500 Ω load: 144 dB |
Clipping Level (20Hz-20 kHz at 1% THD) | 1000 Ω load: 3 dBV 2500 Ω load: 9 dBV |
Self Noise | 19 dB |
Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz) | 75 dB S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted |
Polarity | Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 |
Weight | Net 195 gr |
Switch | Attenuator: −15 dB |
Connector | Three-pin professional audio (XLR), male |
Power Requirements | 48 Vdc phantom, 5.2 mA |
