PURPOSE: To obtain a speaker cabinet in which high stiffness and a large internal loss are made compatible by using a composite of liquid crystal high polymer fibers and thermoplastic synthetic resin fibers.

CONSTITUTION: Liquid crystal high polymer fibers are bound and made composite with molten thermoplastic synthetic resin fibers at heat forming. As the liquid crystal high polymer fibers, ethylene co-polyester made of parahydroxyne benzoic acid and telephthale acid or co-polyester made of phenylene and biphenylene or the like are employed. Then high stiffness and a large internal loss (tanδ) are obtained and since the two kinds of fibers are almost in mixture, the forming time is reduced.