-
The SM137 is a versatile, flat-response cardioid condenser probe microphone with 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
Specifications:
Cartridge Type
Permanently Biased CondenserFrequency Response
20 to 20,000 HzDirectional Polar Pattern
CardioidOutput Impedance
150 ohms (actual)Attenuation Switch
0 dB or 15 dB attenuationPhantom Power
48 Vdc +/- 4 Vdc (IEC26815/DIN 45 596), positive pins 2 and 3Current Drain
5.2 mA typical at 48 VdcCommon Mode Rejection
>50 dB, 20 Hz to 20 kHzPolarity
Positive pressure on diaphragm produces positive voltage on output pin 2 relative to pin 3Dimensions 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/PaSelfnoise (typical, equivalent SPL; A-weighted (IEC 651))
19 dBMaximum 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 dBVDynamic Range (Attenuator On)
5000 ohms load: 133 (136) dB
2500 ohms load: 128 (130 dB)
1000 ohms load: 122 (125) dBSignal to Noise Ratio**
75 dB*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.
**S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted. -
Weight 3 lbs Dimensions 16 × 10 × 6 in -
Rather Rent?
Our equipment is backed by tremendous service and support that allows it to outshine the rest. From maintaining our equipment with certified technicians, to cleaning and testing each piece of cable after every show, we go the extra mile to ensure the equipment you rent from us is show ready each and every time. We offer solutions for Sounds Systems, Audio Control, Wireless Microphones, IEM, Communication Systems, System Design and Calibration, LED Walls, Flypack Systems, Recording and Broadcasting, Projection Mapping, Creative LED Options, Media Servers and Playback, Moving Lights, Special Effects, Control and Networking, Power and Distribution, Follow Spots, Truss and accessories, Chain Motors, Ground Support, Fall Protection, Backline Rentals, Roof Systems, Barricade and Mobile Stages. Browse our inventory and request an online quote today, we would love to take care of your needs!