The SP Series are high-efficiency sound projectors designed to provide excellent speech and background music intelligibility in a wide variety of applications. All are weather-resistant for indoor and outdoor use and are perfect for use in large 100V transmission systems, such as train stations or airports. All meet the IP56 ingress protection standard.

The SP22 is a professional, moisture- and weather-resistant unidirectional sound projector with a high level of efficiency. It features a 5" full-range driver and a built-in 100V line transformer with power inputs for 20 watts, 10 watts, or 5 watts, which can be selected by connecting the corresponding pair of 4-core connecting cables.