The Apart EN-SPH5T16-W is a compact 5.25inch sphere loudspeaker with ABS housing (Ul94 HB) (RAL 9010 equivalent), equipped with a high efficiency full range speaker and a multi tap 100 volt transformer, all certified according EN 54-24. The unit has a ceramic speaker line connector block and thermal fuse. The EN-SPH5T16-W strong sphere loudspeaker offers a high sound pressure level and a balanced frequency response.