What material makes the most resonant soundboard?

Question

What material is it? What is the most commonly used material for making resonance? Where can i find out more about resonating materials?

Answer 1

It depends on what you want the resonant frequency to be.  The stiffer the material, the higher frequency at which it will resonate.

How you want the board to resonate depends on what your application is.  For instance, the best material for a speaker cabinet is wood.  Any wood will do, but hardwood is preferred because of its strength and stiffness.  Honestly, however most popular-priced speaker cabinets are made of cheaper material, usually particle board with a veneer or covering of some type.

Answer 2

Of course wood. It is sturdy but flexible, good to handle and to carve. Ask someone who builds violins and other string instruments.