Get your Eminence Delta 15A PA Replacement Speaker and find out why Eminence Speakers are a worldwide industry standard! The Delta 15A PA speaker is intended as a woofer/mid-bass. The Delta 15A features a Kapton coil former for increased rigidity and thermal protection; a polyamide-coated 2-layer 28ga. copper voice coil for improved power handling and durability; ferrite magnet; vented and extended core for increased power handling; pressed steel basket for rigidity; a paper cone; rolled cloth cone edge with deep corrugations for extended Xmax; and solid composition paper dust cap.