The SA-15 is a 2-way full range system in a trapezoidal, computer optimized enclosure. Loud speaker complement consists of an 15" LF woofer in a ported sub-enclosure, and a single 3"compression driver mounted on a 40o×90o horn. A factory optimized internal crossover is installed to ensure balanced output between the HF and LF components. The enclosure is constructed of durable 13-ply void-free birch laminate, dadoed for strength and durability. Integrated eyebolt receptacles are located on the top of the system to facilitate a vertical installation. Perforated steel is employed for frontal protection of the loud speaker complement.