I have an 18 inch woofer for sale. It has no discernable brand. Has a large ceramic/ferrite magnet and stamped frame. 3" ? vioce coil. Almost new. surround in good condition. Asking $55.00... Speaker driver only, no enclosure. Works fine, purchased for a stillborn sub-woofer project. Shown with 10 inch woofer for comparison, also with VHS videocassete. This thing is COLLOSAL. Anyone play Bass Guitar?