Shure SM93 Omni-Directional Lavalier Condenser Microphone wi

Shure SM93 Omni-Directional Lavalier Condenser Microphone wi

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Product Description

The SM93 is an economical omnidirectional miniature lavalier condenser microphone designed for use in speech applications. Despite its small size, the microphone element provides full, clear sound comparable to that of much larger microphones. Its frequency response is tailored to body-worn applications, with low-end rolloff and presence rise.

The SM93 is powered by phantom power supplied by broadcast, sound reinforcement or recording equipment, or an external phantom supply. The SM93 operates over an extremely wide voltage range of 11 to 52 Vdc, covering both DIN and IEC phantom power standards.

The SM93 is supplied with a sew-on mounting bracket, a mounting block with attached tie bar, and an acoustic windscreen to minimize wind noise in outdoor applications. It is also supplied with a dual mounting block with attached tie bar. 

  • Subminiature lavalier design; ideal size for theater, television broadcasting, video, film, and sound reinforcement

  • Small, inconspicuous mounting hardware

  • Full, clear sound comparable to larger microphones

  • Smooth extended frequency response with presence rise specially tailored for chest-worn microphone operation

  • Controlled low-frequency rolloff reduces low-frequency clothing and room noise

  • Low distortion, wide dynamic range

  • Versatile mounting accessories allow a variety of low-visibility applications

  • Preamplifier assembly can be pocketed, strapped to the body, or clipped to belt or waistband

  • Omnidirectional condenser

  • Frequency response: 80 to 20,000 Hz


80 to 20,000 Hz, 12 dB/octave rolloff below 100 Hz

Polar Pattern

Omnidirectional, uniform with frequency

Output Impedance

Rated at 150 ohms (90 ohms actual)

Recommended minimum load impedance: 800 ohms

(May be used with loads as low as 150 with reduced clipping level)

Output Level

Open Circuit Voltage: -43 dBV/Pa (7.0 mV)

(1 Pascal = 94 dB SPL)

Output Clipping Level (at 1,000 Hz)

-18 dBV (0.13 V) minimum

Total Harmonic Distortion

Less than 1% at 120 dB

Maximum SPL

120 dB

Dynamic Range (maximum SPL to A-weighted noise level)

98 dB

Output Noise (equivalent SPL)

22 dB typical, A-weighted 26 dB, weighted per DIN 45 405

Hum Pickup (electromagnetic)

-4 dB equivalent SPL in a 1 mOe field (60 Hz)

Signal-to-Noise Ratio
72 dB at 94 dB SPL (IEC 651)

Positive pressure on microphone diaphragm produces positive voltage on pin 2 relative to pin 3 of preamplifier output cable connector

Recommended Operating Voltage

11 to 52 Vdc phantom. Protected against reverse voltage application

Current Drain

0.33 mA

Environmental Conditions

Operating Temperatures: -18 to 57 degrees C (0 to 135 degrees F)

Storage Temperatures: -29 to 74 degrees C (-20 to 165 degrees F)


Black 1.27 m (4.17 ft), attached, two-conductor, shielded, terminated by miniature connector type (TA4F)


Microphone: Black ABS thermoplastic case with stainless-steel-mesh grille

Preamplifier: Steel case with non-reflective black finish, black-chrome belt clip

Net Weight

Microphone: 16 g (0.57 oz)

Preamplifier: 118 g (4.17 oz)

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