Materials of constructionandmiddot Kapton coil former for increased rigidity and thermal protectionandmiddot Polyamide-imide coated two-layer copper voice coil for improved power-handling and durability andmiddot Ferrite magnet andmiddot Vented core for increased power handlingandmiddot Premium pressed steel basket for maximum strengthandmiddot Paper cone andmiddot Cloth cone edge andmiddot Solid composition paper dust cap Ideal for two-way sound reinforcement systems keyboard guitar combos.