Adirondack Spruce / Rose Gum Tenor Ukulele

Tonewoods

  • Adirondack Spruce top

  • Eucalyptus Rose Gum back and sides

  • Bloodwood binding

  • Mahogany neck

  • Bloodwood rosette

  • Ebony fretboard

  • Bloodwood headplate

  • Bloodwood bridge with Ebony inlay

  • Bone nut and saddle

  • Grover geared tuners

  • Enduro-Var finish

Rose Gum is a member of the Eucalyptus family, not commonly used for musical instruments. This figured set had a nice tap tone and makes a striking instrument. The bloodwood trim and bridge are from a plank that I've had for nearly 20 years and still has good color.

Voicing and Construction

Top bracing is 3 fan braces with an Adirondack Spruce bridge plate. Back bracing is X-braced which allows easier tuning of back resonance. The back plate was further tuned by reducing the perimeter thickness by 0.3mm.

This is the first instrument that I've built with the main back resonance lower than the main top resonance. There is good coupling between the top and back and sound is quite good.

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 347 Hz

Top cross dipole 467 Hz

Top long dipole 726

Back 324 Hz

Air 185 Hz