Tannoy VLS 7 (EN 54) Passive Column Array Loudspeaker For Installation Applications (EN 54 Certified, White)The VLS 7 (EN 54) WH is a 600 Watt passive column array loudspeaker ideally suited for challenging acoustic and architecturally sensitive spaces in speech only applications, including, airports, train stations, conference centers, houses of worship, stadium concourses and museums. The heart of the loudspeaker system is its asymmetrical vertical dispersion, which gently shapes the acoustic coverage towards the lower quadrant of the vertical axis. VLS 7