| 摘要 |
PURPOSE:To obtain a speaker having the stable characteristics, by providing a lead-group metallic damping material between a piezoelectric converter and a frame to adhere the converter and the frame together. CONSTITUTION:A lead-group metallic damping material 6 is provided between a piezoelectric converter 1 and a frame 3 to support the center part of the converter 1. A lead-group metal having high specific gravity and a large internal loss is best suited to the material 6. |
