Sonance Professional Series PS-S63T Surface-Mount Speaker features the Patented FastMount® bracket and front cable connection to speed up the installation process and provide a clean appearance. The IPX4 rated construction features a weatherproof high-impact, extreme temperature resistant cabinet and corrosion-proof powder coated aluminum grille, lending itself perfectly in both indoor and outdoor applications. A high-excursion 6.5” polypropylene woofer delivers effortless low bass extension, that exceeds many larger competitive products, while the chambered 1” soft dome tweeter provides accurate high-end detail and exceptional coverage. A full-fidelity transformer delivers uncompromised sonic performance in either high (70V, 100V) or low (8 Ohm) impedance. Additionally, the Sonance PS-S63T is certified for is certified for UL 1480 (UEAY) and 2239