| 摘要 |
A drumhead ring reducer for minimizing objectionable drumhead ring, in which a body of porous pliable material, such as polyester foam, is disposed within the drum shell and reacts with the drum membrane. An adhesive layer is disposed on the body for attaching the body to the drum shell, and a protective layer covers the adhesive during packaging and distribution. The body may be of a single segment or of a plurality of segments, each in contact with the membrane and disposed adjacent each other around the inner surface of the drum shell. The bodies will remain attached to the shell and operate effectively with a replacement membrane if the original membrane is removed.
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