Thread: Ventrasonic accoustic chamber
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Old 07-20-2011, 09:06 AM
ddrumman2004 ddrumman2004 is offline
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Join Date: Feb 2010
Location: Courtland MS
Posts: 63
Default Re: Ventrasonic accoustic chamber
Check this out...

http://www.patentgenius.com/patent/4037508.html

This is most likely an added "piece" installed into the drum as I'm "thinking" Ludwig never installed these in their snares. Someone will correct me if I'm wrong.
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