2. Microphones
3. Wired
4. Instrument
5. SM137-LC

Instrument Condenser Microphone with Microphone Clip

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

• •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

Details

Cartridge Type Permanently Biased Condenser Frequency Response 20 to 20,000 Hz View Larger Directional Polar Pattern Cardioid Output Impedance 150 ohms (actual) Attenuation Switch 0 dB or 15 dB attenuation Phantom Power 48 Vdc +/- 4 Vdc (IEC-268-15/DIN 45 596), 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 Dimensions and Weight 24 mm (0.950 in.) diameter 162 mm (6.375 in.) long 195 grams (6.9 oz.) Sensitivity (typical, at 1000 Hz; 1 Pa = 94 dB SPL) -41 dBV/Pa Self-noise (typical, equivalent SPL; A-weighted (IEC 651)) 19 dB 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 *20 Hz to 20 kHz; THD < 1%. THD of the microphone preamplifier when applied input signal is equivalent to the cartridge output at specified SPL. 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 **S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.