About: http://webisa.webdatacommons.org/212166833

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The do add a small amount of mass which helps lower the resonant frequency of the metal panel, but most of the work is being don by converting the vibrations in to heat.. a very small increase...
http://www.w3.org/ns/prov#wasQuotedFrom	caraudio.com