Woven glass fiber woofer with butyl rubber surround; Auto-resetting tweeter overload protection switch; High quality multi-order crossover; Gold-plated high tension terminals fit up to 5-gauge wire; Vibration-damping easy-grip motorboot; Load-balancing toggle mounting system; Far-forward mounting for open, spacious sound; Super slim 3mm, magnetic, frameless, micro-perforated grille; Vibration free, all-weather frameless grille may be custom painted; Square grilles also available;