The Pure Resonance Audio S8.1 redefines 70V outdoor surface mount loudspeakers, combining premium audio performance, beauty, durability, and simple functionality in a single concept. The durable IP65-rated dust and water-resistant UV-protected ABS enclosure make the S8.1 perfect for background-to-foreground level music, paging, and general-purpose audio in both indoor and outdoor commercial applications. This 2-way all-weather 70V surface mount loudspeaker encompasses an 8" graphite woofer and 1.1" silk tweeter and a built-in 70V/100V transformer with an 8Ω bypass. Exclusive OBE (Optimal Bass Enhancement) radiator technology provides an enhanced low-end for a richer and more robust full-range sound. The S8.1 produces impeccable acoustic quality, high-fidelity audio with clean and clear vocal and music reproduction for restaurants, bars, retail stores, fitness gyms, schools, and other business applications that desire deeper bass.