center cap 8 bobbin 3 damper 6 and cabinet 12 can be manufactured by the same method using a triphenyl phosphate fire retardant thus speaker components which exhibit a good fire retardancy and a low hygroscopicity and can difficultly soften and thus cause no deterioration of acoustic properties can be obtained by a simple manufacturing method for the various speaker components the triphenyl phosphate fire retardants can be used in a following manner for the edge 5 a cloth material may be impregnated with a triphenyl phosphate fire retardant and the coating material or rubber may include a triphenyl phosphate fire retardant incorporated therein for the center cap 8 a material such as paper and cloth may be processed in the same manner as for diaphragm alternatively the triphenyl phosphate fire retardant may be kneaded with the film forming material or may be added to the base resin for the bobbin 3 a craft bobbin may be impregnated with the triphenyl phosphate fire retardant alternatively the triphenyl phosphate fire retardant may be kneaded with the film forming material alternatively the triphenyl phosphate fire retardant may be added to the coating material for the damper 6 the cloth material may be impregnated with the triphenyl phosphate fire retardant.