660 vs 670 scale length

Trovador98

Consider this:

Two Selmer style D-hole guitars made from solid walnut back and sides, spruce top, typical body dimensions, but one made at a medium 660mm and another long 670mm scale length.

Ergonomics aside, what are some pros and cons of each guitar?

JasonS

That's not even half an inch so not really a meaningful difference. I would just go with whichever one I like better.

MichaelHorowitz

Generally shorter scale lengths will decrease string tension resulting in easier playability and fuller mids/bass. Longer scale lengths will have more string tension which will require greater strength/technique to play but will have greater projection, especially in the high end.

Of course, there are many other variables like action, string gauge, neck angle, body size, top thickness, etc which can effect the result. Some great luthiers like Hahl or Dupont can manage all these variables to produce short scale guitars that still have great lead projection while others sound pretty flubby and only useful for rhythm.