Torrefied Sitka Spruce / Koa Tenor Ukulele

Tonewoods

  • Torrefied Sitka Spruce top

  • Curly Koa back and sides

  • Curly Maple binding

  • Mahogany neck

  • Abalone rosette

  • Ebony fretboard

  • Headstock with ebony headplate

  • Ebony bridge with abalone inlay

  • Bone nut and saddle

  • Gotoh geared tuners

  • Enduro-Var finish

Voicing and Construction

Top bracing is 3 fan braces with a carbon fiber bridge plate. Back bracing is X-braced which allows easier tuning of back resonance. My experience is that the Chladni pattern is larger on the back when X-braced versus ladder braced.

Top thickness 2.0mm at center tapering to 1.6mm at perimeter.

Back thickness 1.9 mm thinned to 1.6mm at perimeter.

Resonances:

Top monopole 365 Hz

Top cross dipole 511 Hz

Top long dipole 703 / 785

Back 390 Hz

Air 190 Hz