The Programme 30ET loudspeaker system is designed to deliver accurate, high power sound in a lightweight, small and easy to install package. From the selection of components, to the High Frequency Driver protection circuit pro-tech®(PTC) the Programme 30E is designed from the ground up to be a workhorse. Feature laden and powerful, the Programme 30E is the best choice for a small, big sounding loudspeaker. The Programme 30ET speaker is used in constant voltage distributed systems. With an internal 70v/100v transformer, you can economically install background music or paging system, while still only using one (70v/100v) amplifier. The compact, lightweight Programme 30E/30ET is available in Black and White. They can be oriented in a vertical or horizontal position. All models have been designed for tabletop or bookshelf installation or, with the use of the included brackets they can be mounted on the wall or ceiling.