Shure SM58-LC Vocal Mic: Plug Into Your PA

A rehearsal room may already have speakers and a mixer, yet still need a microphone for the singer. That is a clear job for the Shure SM58-LC: close vocals through an existing sound system. This wired version keeps the purchase focused on the microphone itself. Before choosing it, check the input you will use and whether you need to supply your own cable and stand.

Start with the sound system you have

The SM58 is a dynamic microphone with a three-pin male XLR connector. It sends an analog microphone signal, so the other end of the cable needs a suitable microphone input on your mixer, PA equipment or recording interface. A socket that merely fits is not enough; check that the receiving device accepts a microphone-level signal.

For computer recording, budget for an audio interface with an appropriate microphone preamp and computer connection. Shure's computer guidance explains why simply adapting an SM58 to a typical computer sound input can leave the recording quiet or noisy. The microphone itself has no USB recording connection.

It does not require phantom power. That is separate from amplification: you still need the receiving equipment to raise the microphone signal to a useful level. If the room already provides that equipment, the SM58-LC fills one specific gap. Building everything from scratch involves more than the microphone price. Shure also advises turning phantom power off before connecting or disconnecting microphones to reduce loud pops.

Work close to the grille

Shure designs the SM58 around vocals, with a midrange lift and reduced low-frequency response. Its cardioid pattern favors sound arriving at the front while reducing pickup from other directions. Those features suit a singer addressing the grille; they do not compensate for holding it far from the singer or isolate the voice completely from a loud band.

The manual's close-vocal example places the mouth within six inches of the windscreen, directly in front of it. Moving close also increases bass through proximity effect. Use distance as part of the sound check: find a position that gives the voice enough body without becoming too bass-heavy, then keep that distance reasonably consistent.

The spherical grille contains a wind and pop filter, and the internal shock mount is designed to reduce handling noise. Hold the body instead of cupping the grille, and avoid unnecessary handling. These features help manage ordinary vocal use; they do not eliminate every breath pop or bump. Shure recommends an additional windscreen outdoors.

Plan the mic and speaker positions

Buying a cardioid microphone does not remove the need to manage feedback. Feedback occurs when amplified sound returns from a loudspeaker to the microphone and is amplified again. Turning up the channel cannot solve that loop by itself.

For the SM58, Shure recommends locating unwanted sources such as stage monitors behind the microphone, along its rear, handle-end direction. Keep the grille aimed toward the performer and away from loudspeakers. The manual also calls for testing microphone placement before a performance; room acoustics, speaker position and system level all affect the result.

That makes this a better fit for a rehearsal position or planned stage setup than for someone expecting to wander anywhere in front of a loud PA. If feedback starts, lower the level and reassess placement rather than assuming the microphone is immune to it.

Choose the LC package deliberately

The SM58-LC includes a stand adapter and zippered pouch. It does not include the XLR cable or a microphone stand. The adapter holds the mic on a compatible stand; it is not a complete support by itself. If a venue supplies the cable and stand, that can make the LC package enough without buying duplicate accessories.

This version also has no on/off switch. Plan to mute the channel at the sound system when needed. Shure offers separately identified cable and switched versions, so compare the actual package contents rather than assuming every SM58 listing contains the same items.

Choose the LC when close vocal work and a wired microphone input are already part of the plan. For a first rehearsal setup, confirm the input, cable length and support before ordering. For a computer-only desk with no interface, include that extra hardware in the comparison before deciding that this is the simplest way to record.