About: http://webisa.webdatacommons.org/143910144

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	If cost is an issue, then as both JDT and I have suggested, a high power audio amplifier would probably be your best option.
http://www.w3.org/ns/prov#wasQuotedFrom	allaboutcircuits.com