About: http://webisa.webdatacommons.org/224735942

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	They are used in low frequency speakers such as subwoofers and bass guitar speakers.
http://www.w3.org/ns/prov#wasQuotedFrom	pickyguide.com