The decision in brief

Use Grand Concert and Grand Auditorium as maker-specific body names, then compare the actual dimensions. In Taylor’s published examples, the standard Grand Concert has a narrower, shorter and shallower body with a shorter scale than the Grand Auditorium. The deep-body Grand Concert shares the listed Grand Auditorium depth, so the name alone does not settle reach or comfort. Try body fit and fretting reach separately before judging sound.

Keep the maker with the body name

This comparison uses Taylor’s Grand Concert and Grand Auditorium descriptions. Their dimensions are useful concrete examples. They do not define every guitar sold under similar names, and they do not make a Taylor model a recommendation for every player.

Identify the full model, version and intended string system. A shared family word does not establish the same neck joint, construction, cutaway or electronics. The 00 and Concert explanation shows why one maker’s naming system cannot be silently transferred to another.

Read body length, width, depth and scale separately

The lower bout is the wide lower part of the body below the waist. Keep that body measurement separate from neck width and string spacing.

Published measurementStandard Grand ConcertGrand Auditorium
Body length19½ in20 in
Lower-bout width15 in16 in
Depth at soundhole4⅜ in4⅝ in
Nominal string scale24⅞ in25½ in

In these examples, the Grand Auditorium is ½ inch longer at the body, 1 inch wider at the lower bout and ¼ inch deeper at the stated soundhole location. Its nominal scale is ⅝ inch longer. These are differences between published values, not measured tolerances or a prediction of how a player will feel.

Body length describes the body; scale describes the fret-layout reference. They must not be added into one “guitar size” score. Nut width, string spacing and neck profile need separate fields. Use the nut-width guide when the concern is space between the fingers.

Sources: Taylor Grand Concert: standard and deep-body dimensions; Taylor Grand Auditorium: body dimensions and nominal scale

A deep-body Grand Concert changes the depth comparison

Taylor also lists a deep-body Grand Concert. Its 15-inch lower bout and 19½-inch body length match the standard Grand Concert entries, while its 4⅝-inch soundhole depth matches the Grand Auditorium value above. The listed scale remains 24⅞ inches.

That example prevents a blanket claim that every Grand Concert is shallower than a Grand Auditorium. Confirm which version a listing describes. A photograph or an abbreviated GC label may not supply that detail.

The depth comparison also needs the same measuring location. A maximum depth measured near the tail is not automatically interchangeable with the soundhole-depth values used here. Retain the maker’s reference point when requesting dimensions for another guitar.

Sources: Taylor Grand Concert: standard and deep-body dimensions; Taylor Grand Auditorium: body dimensions and nominal scale

Three dimension groups comparing Taylor standard Grand Concert and Grand Auditorium lower-bout width, body depth and nominal scale
Original dimension bars from Taylor’s stated examples. The separate rows use different scales; these are not guitar outlines or acoustic-output measurements. Deep-body Grand Concert depth is shown separately.

Make two different fit observations

First observe the body in your normal seated position, then with a strap if relevant. Notice the lower bout against your picking arm, how the waist rests and where the neck settles. A narrower example may be worth trying when reaching around the body is the problem, but it does not guarantee comfortable posture.

Next play a familiar first-position chord and a passage that needs your normal stretch. Record fretting reach separately from the body observation. The shorter listed scale changes the fret layout, while nut spacing, neck shape, strings and setup can also affect this task.

The scale-length guide explains the reference dimension. It cannot replace holding the guitar. A smaller lower bout does not establish narrower string spacing, and a successful short trial cannot promise long-session comfort.

Use sound descriptions to choose a listening task

Body-name descriptions such as focused, balanced or versatile are starting questions for a comparison. They do not establish which individual guitar will suit your accompaniment or recording. Avoid turning a catalogue description into an acoustic measurement.

Play a quiet phrase with independent bass and melody, then the strongest accompaniment you use. Listen for the balance you need and whether your technique can control it. Keep strings, tuning, pick and room conditions in the record. Two complete guitars with different tops, bracing or setups do not isolate body shape.

If recording, preserve microphone position as closely as possible and compare at similar playback level. If amplification is part of the job, assess that route separately. The acoustic-pickup guide covers the installed system; the top-construction comparison addresses a different variable.

Choose from the actual version and playing result

Record before the trialAdd your observation
Maker, model and standard/deep-body versionBody support and picking-arm reach
Body dimensions with reference locationsSeated and standing position
Scale, nut spacing, strings and setupFretting reach and note control
Passage and acoustic/recorded/amplified routeUseful response and unresolved differences

Shortlist the version whose dimensions address your physical question, then compare the actual musical response. When a body fits but the neck does not, keep that distinction and try another model. When both fit, let the part and listening conditions guide the preference.

The Dreadnought, Grand Auditorium and OM comparison widens the body-family shortlist. For the complete personal buying process, continue with how to choose an acoustic guitar.

How this guide was prepared

We checked Taylor’s Grand Concert and Grand Auditorium shape pages on October 27, 2026. Dimensions are manufacturer descriptions at the stated locations, not our measurements or an industry sizing standard. Differences in the table and diagram are simple editorial arithmetic. The deep-body entry is kept separate. Fit and listening tasks are proposed guidance; no guitars were held, played, measured or acoustically tested, and no human specialist review is claimed.

Documentation checked .

Sources and further reading

Continue the research

00 vs Concert Guitar: Body Names, Feel and Playing ContextLearn what these compact acoustic names mean, then separate the body you hold from the neck and strings you play.Dreadnought vs Grand Auditorium vs OM: Which Acoustic Body Shape Fits?Body shape affects comfort and acoustic behavior, but maker-specific dimensions, scale, bracing and setup matter more than the name alone.How to Choose an Acoustic Guitar: Body Shape, Construction and FitA practical way to compare acoustic guitars: separate verified specifications, your playing observations, care requirements and unresolved questions.