| 摘要 |
PURPOSE:To obtain reproduction sound which is excellent in its respondent and follow-up quality and has little distortion to vibration of the diaphragm, by using the thread material whose longitudinal thread has been treated with contracting working, and stretching this thread material depending on vibration of the speaker. CONSTITUTION:The edge material 30 of a cylindrical shape is obtained by means of a jersey texture, by using the thread which has been treated with crimp working, and plain thread, for the longitudinal thread 31 of the circumferential direction, and the latitudinal thread 32, respectively, and its contractility is given to the length direction only of the edge material 30. As a result of the foregoing, it is possible to obtain the reproduction sound which is excellent in its respondent and follow-up quality and has little distortion to vibration of the diaphragm since the thread material is stretched depending on vibration of the speaker. |
