JBL 10" Subwoofer. The subwoofer functions faultlessly as well as has no problems. It is in perfect physical condition and can be examined thoroughly just before investment. Don't hesitate to call me with any sort of concerns (e-mail, phone call, or content).
.
Info about the sub is right here:.
http://www.jbl.com/resources/Brands/jbl/Products/ProductRelatedDocuments/en-US/ServiceManual/SUB500(SCS500.5)% 20sm.pdf.