STI developed the surface mounth Series speakers to address a demand in the installation market for speakers capable of providing superb music reproduction as well as crystal clear announcements for public address applications, all in a stylish design that complements any interior design. They feature customized transducers with large, powerful magnetic circuits that increase driving and braking force substantially, as well as dedicated tweeter diaphragms and speaker cone paper made from a carefully-created blend of materials that help optimize sound reproduction. Enclosures are built tough to meet the demands of a wide variety of commercial environments, constructed from a carefully selected materials with just the right tensile strength, and designed with optimized tuning to offer a firm, tight low-end. From the networking components and the materials used for wiring and soldering, right down to the optimal placement of acoustic absorption material, a great deal of attention has been paid to even the smallest details of the series' design. Several aspects of these speakers' design reflect a strong emphasis on functionality as well as the aesthetic features of their construction - effectively enhancing sound quality and speaker performance without disturbing the interior decor of the installation. And, they can be painted to match any décor. All surface speakers comes with a dedicated U-bracket for safe or hangigng clip speaker installation. Speakers can be mounted in a vertical or horizontal orientation, depending upon the requirements of your specific application. We 2 way, 3 way and transformer options for most models.