I have found that it is one more layer of felt to allow the damper to absorb that much more of the vibration to help terminate the tone. The damper is stiffer and does not terminate the tone as readily without it. Not a big difference but viva la difference. Ed Tomlinson << I always thought that the red underfelt was just for esthetics. How does it help the damper work more effectively? Thanks, Bob Anderson >>
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