| 摘要 |
PURPOSE:To improve moisture resistance and to eliminate unnecessary resonance and distorted sound, by coating a heated paraffin to the entire surface of a central irradiating section of a speaker made of cone paper. CONSTITUTION:The heated paraffin is coated to all the surface of the central irradiating section 1 of the speaker 4 made of the cone paper. Then, the characteristic withstanding moisture and water is realized and the unnecessary resonance and distorted sound is eliminated. |
