Shure SM58

The Shure SM58 is a professional cardioid dynamic microphone, commonly used in live vocal applications. Produced since 1966 by Shure Incorporated, it has built a strong reputation among musicians for its durability and sound, and half a century later it is still considered the industry standard for live vocal performance microphones.[1][2][3] The SM58 and its sibling, the SM57, are the best-selling microphones in the world.[4] The SM stands for Studio Microphone.[5]

The Shure SM58 microphone

Like all directional microphones, the SM58 is subject to proximity effect, a low frequency boost when used close to the source. The cardioid response reduces pickup from the side and rear, helping to avoid feedback onstage. There are wired (with and without on/off switch) and wireless versions. The wired version provides balanced audio through a male XLR connector. The SM58 uses an internal shock mount to reduce handling noise.

A distinctive feature of the SM58 is its pneumatic suspension system for the microphone capsule.[6] The capsule, a readily replaceable component, is surrounded by a soft rubber balloon, rather than springs or solid rubber. This gives notably good isolation from handling noise; one reason for its being a popular microphone for stage vocalists. Microphones with this feature are intended primarily for hand-held use, rather than on a stand or for instrument miking.

The SM58 is unswitched, while the otherwise identical SM58S has a sliding on-off switch on the body. Other suffixes refer to any accessories supplied with the microphone: when a cable is provided, the model is actually SM58-CN, while the SM58-LC has no provided cable; the SM58-X2u kit consists of the SM58-LC and an inline X2u XLR-to-USB signal adaptor (capable of providing phantom power for condenser microphones, and offering an in-built headphone jack for monitoring).[7]

Specifications
Robert Lockwood, Jr using an SM58
Patti Smith performing with an SM58 in Finland
Lower-cost 588SD, circa 1970[8]

Type: Dynamic[9] (moving coil)

Frequency Response
50 to 15,000 Hz[9]
Polar Pattern
Cardioid,[9] rotationally symmetrical about microphone axis, uniform with frequency
Sensitivity (at 1,000 Hz Open Circuit Voltage)
−54.5 dBV/Pa (1.85 mV); 1 Pa = 94 dB SPL[9]
Impedance
Rated impedance is 150 ohms (300 ohms actual) for connection to microphone inputs rated low impedance[9]
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3[9]
Connector
Three-pin male XLR[9]
Net Weight
298 grams (10.5 oz)[9]

Awards
  • In 2008, for the second year running, the SM58 microphone won the MI Pro Retail Survey "Best Live Microphone" award.[10]
  • In 2011, Acoustic Guitar magazine honored the SM58 with a Gold Medal in the Player's Choice Awards.[11]

Counterfeiting

The SM58 and SM57 have been extensively counterfeited.[12][13][14][15][16][17] Most of these counterfeit microphones are at least functional, but have poorer performance and do not have the pneumatic suspension. There are many other subtle details which can reveal most of these fakes.[18][19]

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See also

References
  1. Live Sound International, September/October 2002. Real World: Wired Vocal Microphones Archived 2009-01-07 at the Wayback Machine
  2. Miller, Peter L. (2001). Speaking Skills for Every Occasion. Blake's Guides. Pascal Press. p. 30. ISBN 1741250463.
  3. Morris, Tee; Tomasi, Chuck; Terra, Evo (2008). Podcasting For Dummies (2 ed.). John Wiley & Sons. p. 36. ISBN 047027557X.
  4. Paul Stamler, Shure SM57 Impedance Modification, Recording Magazine, archived from the original on 2014-04-21, retrieved 2014-04-20
  5. History of Shure Incorporated
  6. Goodwyn, Peterson. "Shure's Secret, Invisible Shockmount". Recording Hacks. Retrieved 1 November 2013.
  7. "SM58+X2u USB Digital Bundle". Shure Europe.
  8. Shure webpage
  9. Product Specifications (PDF), Shure, retrieved 2012-10-06
  10. http://www.shure.com/americas/about-shure/history/index.htm
  11. Gerken, Teja. "Acoustic Guitar Player's Choice Awards 2011 - Shure SM58". Acoustic Guitar. String Letter Publishing. Retrieved August 19, 2012.
  12. "Sennheiser, Shure Team Up For Counterfeit Raid", December 21, 2001, MIX
  13. "Counterfeit Shure Microphones Destroyed", October 9, 2002, MIX
  14. "Thai-based counterfeit ring smashed", February 1, 2006, Music Trades. "Among the products in this shipment was a large quantity of counterfeit SM58 microphones destined for retail outlets around Thailand."
  15. "Auction websites' threat to legitimate brands", January 1, 2007, Pro Sound News Europe. "The SM57, SM58, Beta 57 and Beta 58 are among the fixities proving most attractive to counterfeiters."
  16. ""Shure Seizes Counterfeit Microphones in China", November 14, 2007, MIX
  17. "Counterfeit Shure Gear Seized: Thousands of counterfeit microphones were recently confiscated in Peru and Paraguay by customs officials", February 2, 2012, Broadcasting & Cable
  18. "Spotting a Fake Shure Microphone: How to tell if your mic is genuine -- or not". About.com Home Recording
  19. "5 Tips on Spotting a Fake Shure SM58"
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