
Acoustic guitars typically require a higher action than electric guitars due to the need for resonance to make the body vibrate. If the action is too low, the guitar's tone will suffer, resulting in a dull and lifeless sound. On the other hand, higher string height in acoustic guitars allows the strings to vibrate more freely, producing a fuller and more powerful sound. However, this is not always the case, as some players may prefer a lower action on their acoustic guitars, especially when playing complex chords or using a slide. Ultimately, the ideal action depends on the player's style and preferences, and adjustments can be made to find the perfect balance between acoustic and electric tones.
| Characteristics | Values |
|---|---|
| Acoustic action | Higher than electric guitars |
| Reason for higher action | Resonance required to make the body vibrate |
| Consequence of low action | Dead and dull sound |
| Advantage of higher action | Full, round, and powerful sound |
| Setup | Compromise between acoustic and electric playing styles |
| Heavy-handed players | Need higher action to prevent buzzing |
| Slide players | Prefer higher action to avoid slide hitting frets |
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What You'll Learn

Acoustic guitars need higher action to resonate and vibrate the body
The action of a guitar refers to the distance between the top of the fret and the bottom of the string. Adjusting the action of a guitar can have a significant impact on its playability and sound. For acoustic guitars, a slightly higher action is often preferred, typically ranging from 3/32" to 7/64". This is because acoustic guitars rely on the vibration of the strings to produce sound, and a higher action allows for greater string vibration, resulting in a richer and more resonant sound.
A higher action also compensates for the greater tension of acoustic strings, helping to prevent unwanted string buzz and ensuring a clear and resonant tone. Classical guitars, in particular, tend to have even higher action settings, as this prevents buzzing and facilitates the intricate fingerpicking techniques associated with classical music. Additionally, a higher action can make the guitar more responsive to delicate dynamics and articulation, which is crucial for expressive performances in classical guitar music.
While a higher action is generally recommended for acoustic guitars, it is important to note that action is also a matter of personal preference. Some players may prefer a lower action on their acoustic guitar, especially if they have a lighter touch when playing. Lowering the action can make the guitar easier to play, but it may also increase the likelihood of string buzz, affecting the sound clarity.
Ultimately, the ideal action for an acoustic guitar depends on factors such as playing style, string type, and personal preference. Finding the right balance in action settings ensures that the guitar produces the desired sound while remaining comfortable and responsive for the player. Achieving this balance may require adjustments to the truss rod, saddle, or bridge height, and in some cases, seeking professional assistance may be advisable.
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Electric guitars have more flexibility in setup
Electric guitars and acoustic guitars have inherent differences that affect their setup and playability. Acoustic guitars, with their hollow bodies, rely on resonance to make the body vibrate and produce sound. This means that acoustic guitars typically require higher action—the distance between the strings and the fretboard—to allow for adequate string vibration and a full, rich tone. On the other hand, electric guitars are amplified, and their setup is more flexible.
The flexibility of electric guitars lies in their ability to be adjusted for different playing styles and sounds. While acoustic guitars generally have limited adjustability, electric guitars can be tweaked and modified to suit specific preferences and musical genres. For example, a player who uses an electric guitar with a slide may prefer a slightly higher action to prevent the slide from hitting the frets during performance. Conversely, a player who frequently plays complex chords, such as in jazz or neo-soul, might benefit from a lower action that reduces the amount of pressure required on the fretboard.
The neck relief, or the amount of curvature in the guitar neck, is another critical factor in the setup of electric guitars. A qualified guitar technician should check and adjust the neck relief to ensure optimal playability. Unlike acoustic guitars, electric guitars with perfect neck relief can accommodate lower action without sacrificing tone quality. This adjustability allows electric guitar players to find a balance between string height and neck relief that suits their unique playing style and musical preferences.
Additionally, electric guitars offer a range of amplification and sound modification options that acoustic guitars lack. Electric guitarists can experiment with different amplifiers, effects pedals, and equalization settings to create diverse sounds and styles that cannot be achieved with an acoustic guitar alone. This flexibility in sound shaping allows electric guitarists to explore various musical genres and develop their signature tones.
While electric guitars provide more flexibility in setup and sound, it's important to note that they are not a direct substitute for acoustic guitars. Each type of guitar has its own unique characteristics and strengths. Acoustic guitars are renowned for their natural, warm sound and are excellent for unamplified performances. Electric guitars, on the other hand, shine in their ability to produce a wide range of amplified tones and are often associated with more contemporary musical genres. Ultimately, the choice between an electric or acoustic guitar depends on the player's musical style, preferences, and the specific requirements of their performances or recordings.
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Low action can cause slides to hit frets
Playing slide guitar with low action can be challenging, as it requires more advanced techniques to avoid the slide and strings from touching the fretboard. While it is possible to play slide guitar with low action, it is generally easier to start with a guitar that has higher action, as it provides more room for error.
When using a slide on a guitar with low action, the main challenge is to sustain notes without letting the slide, strings, or both touch the fretboard. This requires a light touch and a focus on applying just enough pressure with the slide to sustain notes cleanly. If too much pressure is applied, the strings and slide will scrape the fretboard, creating an unwanted "buzzing" sound and interrupting the notes.
To play slide guitar effectively with low action, it is important to maintain good playing techniques and a light touch. Some players may opt to use heavier strings, as they can help reduce the slide's contact with the fretboard. Additionally, adjusting the tension or height can also help reduce fret knocking.
While it is possible to play slide guitar with low action, it may require more effort and technique adjustment. It is recommended to start with a guitar that has higher action to allow for a smoother learning process and then transition to lower action as your skills improve.
In summary, low action can cause slides to hit the frets, but with proper technique, a light touch, and adjustments, it is possible to play slide guitar effectively even with low action.
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Heavy-handed players need higher action to avoid buzz
When it comes to guitar playing, action refers to the height of the strings above the fretboard. A higher action means the strings are farther from the fretboard, while a lower action brings them closer. Heavy-handed players, or those who strum or pick their strings with more force, generally require a higher action to prevent fret buzz.
Fret buzz occurs when the strings vibrate against the frets, creating an unwanted buzzing sound. This can be more pronounced in acoustic guitars due to their heavier strings, which require more space to vibrate cleanly. By setting the action higher, there is more room for the strings to vibrate without hitting the frets, reducing the likelihood of buzz.
For electric guitars, a higher action can also help prevent fret buzz when playing with a heavier touch. While electric guitars typically have thinner strings that vibrate less intensely, heavy-handed players may still encounter buzz if the action is set too low. Adjusting the action higher can provide the necessary clearance for the strings to vibrate freely without buzzing.
It is important to note that while a higher action can reduce fret buzz, it may also increase the difficulty of playing, particularly for beginners. Higher action requires more finger strength to press the strings down, which can be a challenge for those new to the instrument. Finding the right balance between string height and playability is crucial to ensure a comfortable and enjoyable playing experience.
Additionally, personal preference plays a significant role in determining the ideal action. Some players prefer a higher action for the tonal characteristics it provides, such as a fuller, more resonant sound. Others may prioritise ease of play and opt for a lower action, accepting a slight amount of fret buzz as a trade-off. Ultimately, the decision to raise or lower the action depends on the individual player's style, technique, and desired sound.
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Luthiers use tools to precisely set guitar action
Luthiers, guitar builders, and techs use a variety of tools to precisely set a guitar's action. The term 'action' refers to the distance between the top of the frets and the bottom of the strings. This distance is crucial as it determines how easy it is to play each note and how aggressively the instrument can be played before causing fret buzz. While personal preference plays a role in setting the action, there are tools that can help achieve the desired setup.
One of the most important tools is the guitar ruler, which is used to measure the action accurately. Unlike a regular ruler, a guitar ruler has no gaps on either side and can provide measurements as small as a 10-thousandth of an inch. Another tool, the guitar feeler, has a precise thickness and can be slid between the string and the fret to measure string height.
To adjust the action, luthiers may use a truss rod wrench to adjust the truss rod, which modifies the neck relief. Different guitars have different truss rods that require specific tools or a simple hex or screwdriver for adjustment. Over-adjusting the truss rod can lead to technical playing problems, so precision is key.
Other tools used by luthiers include a string lifter, which lifts a string from its slot so the nut can be cut to the proper depth for playability. A specialty vise is used to securely hold the guitar during adjustments or repairs. The radius gauge helps match the radius of the strings to the fingerboard, improving the feel, ease of playing, and control. For levelling frets, a radius sanding block is used, and a polishing wheel restores the original smooth texture and luster to the frets.
By using these tools and techniques, luthiers can precisely set the guitar action to meet the player's preferences and ensure optimal playability.
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Frequently asked questions
No, it is not always the case. While acoustic guitars tend to need a higher action than electric guitars, this is not true for all setups. The action of a guitar depends on the player's style and preference.
Acoustic guitars rely on resonance to make the body vibrate. Higher action allows for more string vibration, resulting in a fuller and more powerful sound.
Extremely low action can "kill the tone" of an acoustic guitar, making it sound dull and dead. It can also cause buzzing due to the increased relief in the neck.
The action should match your playing style and preference. If you play complex chords, you may prefer lower action, while a heavier playing hand may require higher action to compensate for the increased string pressure.











































