Adirondack Spruce / Rose Gum Tenor Ukulele
Adirondack Spruce top
Eucalyptus Rose Gum back and sides
Bloodwood bridge with Ebony inlay
Bone nut and saddle
Grover geared tuners
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.
Top monopole 347 Hz
Top cross dipole 467 Hz
Top long dipole 726
Back 324 Hz
Air 185 Hz