What is the loudest wood wind instrument?

Answer 1

Apparently the earliest wind instrument was a simple kind of Flute or whistle. The oldest examples we have are made of bone, which provides a natural hollow tube once the marrow is removed, and has the strength and flexibility to be punctured multiple times without breaking.

(Bone was not necessarily the only kind of material used; it may simply be the case that flutes made of bone are the only ones to survive over the millennia. Various kinds of naturally occurring hollow tubes, such as bamboo, are still used in folk instruments today.)

Interestingly, this matches the claim of Genesis 4:21 that "Jubal was the father of all who play the lyre and the pipe." Buzzed-lip instruments such as trumpets probably came much later, as materials and craft evolved.

Answer 2

If "wind instrument" refer to woodwind, It is octocontrabass Clarinet. No, actually, it is the contrabass Saxophone.

Answer 3

tuba

the largest wind instrument is actually a sousaphone made by John Sousa