What is the difference between SM58 and SM57

In the world of professional audio equipment, few microphones have achieved the legendary status of the Shure SM58 and SM57. These two dynamic microphones have been staples in recording studios, live performances, and sound reinforcement for decades. While they may look similar at first glance, each has unique characteristics that make them ideal for specific applications. In this guide, we will dive deep into the nuances of these iconic microphones, exploring their design, sound quality, performance, and best use cases.

To truly understand the SM58 and SM57, it’s essential to appreciate their historical significance. Both microphones were introduced by Shure in the 1960s and have since become industry standards. The SM58, launched in 1966, was primarily designed for vocal performances, while the SM57 was created for instrumental and speech applications. Their robust design and exceptional durability have made them go-to choices for musicians, sound engineers, and broadcasters worldwide.

Physical Characteristics

Design and Construction

At first glance, the SM58 and SM57 appear remarkably similar. Both microphones share Shure’s legendary rugged construction, featuring a steel mesh grille and durable die-cast aluminum body. They are built to withstand the rigors of professional use, capable of surviving drops, extreme temperatures, and high-humidity environments.

SM58 Specifics

Slightly larger, ball-shaped grille
Optimized for vocal clarity
Weight: Approximately 10.5 ounces
Length: 6.75 inches

SM57 Specifics

Shorter, more compact grille
Designed for closer microphone placement
Weight: Approximately 10 ounces
Length: 6.2 inches

Grille Design Differences

The most noticeable difference between the two microphones is their grille design. The SM58 features a larger, rounder grille with built-in pop filtering, making it ideal for vocal performances. In contrast, the SM57 has a smaller, more compact grille that allows for closer placement to sound sources, which is particularly useful for instrumentalists.

Technical Specifications

Frequency Response

SM58

Frequency Range: 50 to 15,000 Hz
Tailored frequency response optimized for vocals
Presence boost around 2-4 kHz
Enhanced midrange clarity
Natural roll-off of low frequencies

SM57

Frequency Range: 40 to 15,000 Hz
Flatter frequency response
Slightly more extended low-end
Pronounced midrange frequencies
Less pronounced vocal-specific boost

Polar Pattern

Both microphones feature a cardioid polar pattern, which means:

Maximum sensitivity at the front of the microphone
Progressively reduced sensitivity to sounds from the sides
Minimal pickup of sounds from the rear
Excellent for isolating primary sound sources
Effective rejection of background noise

Sensitivity and Impedance

SM58

Open Circuit Sensitivity: -54.5 dBV/Pa
Impedance: 150 ohms
Ideal for vocal applications
Performs exceptionally well with most standard preamps

SM57

Open Circuit Sensitivity: -56 dBV/Pa
Impedance: 150 ohms
Better suited for instrumental recordings
Compatible with a wide range of audio equipment

Practical Applications

SM58: The Vocal Champion

The SM58 has earned its reputation as the quintessential vocal microphone. Its design and frequency response make it ideal for:

Live vocal performances
Stage productions
Public speaking
Broadcast applications
Recording studio vocal tracks
Podcasting and voiceover work

Key advantages for vocals:

Built-in wind and pop filter
Tailored frequency response enhancing vocal clarity
Excellent feedback rejection
Consistent performance across various vocal styles

SM57: The Instrumental Specialist

While capable of handling vocals, the SM57 truly shines in instrumental applications:

Guitar amplifier recording
Drum microphone (snare, toms)
Brass and woodwind instrument miking
Percussion recording
Close-mic techniques
Live instrumental performances

Key advantages for instruments:

Compact grille allows closer microphone placement
Handles high sound pressure levels (SPL)
Accurate midrange reproduction
Excellent transient response
Ideal for capturing instrument details

Sound Characteristics

SM58 Sound Profile

Warm, smooth vocal reproduction
Slight midrange emphasis
Natural high-end clarity
Controlled low-end response
Flattering to most vocal types

SM57 Sound Profile

Punchy, detailed instrumental sound
Flat, accurate midrange
Sharp transient response
Excellent high-frequency definition
Captures nuanced instrumental performances

Price and Value

Both microphones are competitively priced, typically ranging between $100-$200. Their exceptional durability means they represent excellent long-term investments for musicians, sound engineers, and content creators.

Choosing Between SM58 and SM57

When to Choose SM58

Primary focus on vocal performances
Live singing
Public speaking
Podcasting
Broadcast applications

When to Choose SM57

Instrumental recording
Amplifier miking
Drum and percussion recording
Close-mic techniques
Applications requiring precise midrange capture

Accessories and Compatibility

Both microphones are compatible with:

Standard XLR microphone cables
Most professional audio interfaces
Typical microphone stands and clips
Numerous audio processing equipment

Conclusion

The Shure SM58 and SM57 are not just microphones; they are icons of professional audio equipment. While they share many similarities, their subtle differences make them specialized tools for specific audio applications. The SM58 excels in vocal reproduction, while the SM57 offers unparalleled instrumental precision.

Ultimately, the choice between these microphones depends on your specific needs. Many professional setups include both, leveraging their unique strengths across different recording and performance scenarios.

Whether you’re a musician, podcaster, sound engineer, or content creator, understanding the nuanced differences between the SM58 and SM57 will help you make informed decisions about your audio recording equipment.