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What Are The Different Acoustic Guitar Body Types

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Deciding on an acoustic guitar involves a number of things – and one of those things is getting the body shape that will be best suited to your purposes.

Different acoustic guitar posts

Below I will discuss the different acoustic guitar body types, what each type is most commonly used for and which types are most commonly used today.

Don’t worry I won’t be going into every single shape in the image above – just the more common types – just thought that was a pretty appropriate image for this post!

The Different Shapes Available

There are a number of things that influence the tonality, volume and playability of a guitar. The shape of the guitar influences all three of these.

Below I will cover the following shapes.

  • Classical Guitars
  • Dreadnought Acoustics
  • Concert Acoustics
  • Grand Auditorium Acoustics
  • Jumbo Acoustics
  • Mini and Travel Acoustics

I have used these names for ease of reference but there are different names for different shapes depending on the manufacturer. Below I have tried to include some of the terms used for both Martin and Taylor guitars. Other shapes from other guitar companies might be slightly different but should be relatively similar to these.

Classical Guitars

classical guitar shapeFirst let?s make the distinction between ?classical? guitars and ?acoustic? guitars. Some of the shapes outlined below are quite similar to the classical guitar shape.

There is a big difference though. Classical guitars have nylon strings and are built to be played with Nylon strings. There are shape varieties within the classical guitar category but these tend to be subtle.

Classical guitars also tend to have a wider fretboard which makes finger picking easier and the fretboard tends to join the body at the 12th fret as opposed to the fretboard of an acoustic guitar which?tends to join to the body at the 14th fret (though you can get “12-fret” acoustic guitars too).

Note in the picture to the left?that the classical guitar?s strings are tied onto the bridge (and notice the bridge pins for the other shapes below).

Dreadnought Acoustics

Dreadnought shaped guitarThe Dreadnought shape is perhaps the most popular acoustic guitar shape.

The shape is defined by a very large soundboard that has an ?un-curvy? shape. That is to say that it has a wide, less defined waist than other acoustic shapes giving it a squarer look.

Because of the large soundboard dreadnoughts produce a louder sound. They also produce a more boomy kind of?sound than the other shapes.

Dreadoughts are very popular for rock?& bluegrass. So it?s no wonder they are the most popular shape today. They are predominantly used for flat-picking and strumming and not as much for fingerstyle playing but you can definitely use it for that too – it’s just not as suited to that as some other shapes.

Light Touch or Aggressive?: Because of the larger size?it takes a bit more oomph to get the soundboard to vibrate. So if you play with a light touch you won’t get as much volume or clarity out of it. However, it has a high volume ceiling – meaning that you can play it with a heavy hand or strum it hard and it will play louder without distorting, compared?with some other shapes. This is best for those with a more aggressive style.

In terms of playability dreadnoughts can be harder to hold and therefore harder to play, and less enjoyable to play for smaller people and beginners. However the necks do tend to be quite narrow meaning it?s easier for smaller hands (but harder for finger picking).

Related: Dreadnought Guitar Reviews

Concert Acoustics

taylor 612ce grand concert acoustic guitarThe concert guitar (a.k.a. “0” for Martin Guitars)?is a smaller bodied guitar and usually has a lower bout width of around 13 1/2 inches (34cms).

There are also grand concerts (“00” for Marin?Guitars (more common than the standard concert) which have a lower bout width of around 14 inches (36cms).

The concert acoustic guitar shape is more similar to the classical guitar shape and has a narrower, more defined waist than the dreadnought style – but still has a larger lower bout than a classical guitar.

It has a smaller soundboard so produces a quieter sound. But it also produces a more rounded tone. It is less bass heavy than the dreadnought and the narrower waist width helps to add more definition to the sound.

These guitars are great for playing fingerstyle. You can still strum and flat-pick with them for sure but they are at their best when used for fingerpicking.

Light Touch or Aggressive?:?This size/shape of guitar is great for those who play with a light touch. You can get a lot out of this shape without having to play too aggressively. On the other hand, it has a low volume ceiling – so if you strum it hard it will distort the top easier than with a larger body type. This is great for those who play with a light touch.

These shapes are also easier for smaller musicians to play. They can also feel more comfortable playing sitting down than the dreadnought due to the more rounded shape.

Related: Concert Guitar Reviews

Related: Smaller Sized Guitar Reviews

Grand Auditorium Acoustics

Taylor 214e Grand Auditorium acoustic shapeAuditoriums (000/Grand Performance), Grand Auditoriums (0000/M),

Size-wise these body types are in between the Dreadnought and the Concert – typically with a 15 inch (38cm) width at the lower bout (roughly but they vary quite a bit).?They are generally quite similar in shape to the concert style but just with that larger lower bout.

A Grand Auditorium has rouhly the same lower bout dimensions and body length as a dreadnought but has a narrower waist so the overall body size is smaller.

They achieve a great balance between volume, tone and playability.

Light Touch or Aggressive?: These guitar shapes – sometimes referred to as medium sized guitars – are the great all-rounders. They respond to a light touch better than the likes of a dreadnought but not as well as a Concert. They have a volume ceiling that is higher than a Concert but not as high as a dreadnought. So this is a great option if you like to switch between playing with a light touch and playing aggressively.

This size/shape is also the great all-rounder in the fact that it’s equally as good for playing finger-style, strumming and flat-picking.

Next to Dreadnoughts these are the most popular acoustics today. It is a great all-rounder for playing a variety of styles.

Related: Grand Auditorium Guitar Reviews

Jumbo

Fender CJ-290S Jumbo shaped acoustic guitarSynonymous as the cowboy guitar due to its popularity with country and rock-a-billy artists in the 1940?s and 1950?s, the Jumbo acoustic is the largest acoustic guitar shape.

They can be up to 17 inches (43cms) at the lower bout. Size-wise they rival the dreadnought but shape wise they are more like the Grand Auditorium – though that large lower bout does give it a distinctive shape.

Jumbo?s are great for strumming and produce a lot of volume. This can be great for around the campfire.

Light Touch or Aggressive?: These definitely need a bit of oomph to get them to sing – but the volume ceiling is very high so you can really give it some without any distorting of the top. Definitely best for more aggressive type playing – they’re particularly good strummers.

Not as?common these days but you can still find them.

Mini & Travel Acoustics

These are essentially smaller sized versions of the some of the shapes above. They can take on more of a dreadnought shape or more of a grand auditorium shape.

They are perfect for smaller musicians and those who want a guitar they can easily travel with.

Related: Smaller Sized Guitar Reviews

A couple of other shapes that i haven’t discused here are the Grand Symphony and Grand Orhcestra – these are both Taylor shapes – check out the link below for more on body sizes/shapes including the Grand Symphony and Grand Orchestra shapes.

Flat Top and Archtop

Acoustic guitars can also come with a top (soundboard) that is arched or flat. Whilst flat tops are far and away the most common shaped top on a guitar you can still find plenty of options for an archtop.

Archtops are mostly used by Jazz players but are used by other styles from time to time.

A lot of people would argue that the archtop produces a more pleasing sound. Archtops have been said to produce a purr rather than a roar. That is to say that the archtop may not be as loud or as lively as the flat top but can be a more pleasant sound to listen to.

What’s the Best Shape for You?

Of course guitar shapes don?t fall exactly within these dimensions and there are variations on the ?standard? shapes.

What shape you go with will depend on your physical size, your playing style, your?tonal preferences and your genre preferences.

It?s a good idea to try out some different shapes to see which ones you prefer in terms of playability, response, volume and tone.

What shape do you prefer? Let me know in the comments below. Any other questions or comments also very welcome.

>>Acoustic Guitar Reviews by Size and Shape

Photo Credits

Top Photo by Larry Jacobsen [CC BY 2.0], via Flikr

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