About: http://webisa.webdatacommons.org/391535903

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	A subwoofer is a speaker that is designed to reproduce very low frequency information, the kind of rattle-your-windows oomph that your main audio channel speakers aren???t really good at reproducing.
http://www.w3.org/ns/prov#wasQuotedFrom	aperionaudio.com