The best tone is acheived with a solid, non-veneered soundboard made from the finest coniferous woods such as cedar and spruce.  
Fisher Harps

Engelmann Spruce - Rocky Mountains of British Columbia. This spruce is a popular soundboard wood for North American stringed instrument makers, and has a tone similar to high-altitude European Alpine White Spruce. It has a light, creamy colour, and is harder and stiffer than cedar. 

The tone it produces is round, open & full with a good, clear treble and is more or less evenly balanced between the treble and bass. Spruce can sometimes take up to a year to develop it full tone.

Western Red Cedar - Coastal British Columbia, Canada. The variety of cedar is reddish in colour and can have streaks and other interesting grain colours.. It is used as a soundboard wood by some guitar makers for its increased volume, warmth, wealth of harmonics (overtones) and 'bass-iness'. What is most characteristic of cedar is that it takes only a short time for the voice to mature, and can even sound 'played-in' when new.