High power speakers, paging horn speakers, reflex horn speakers, siren speakers, loudspeaker for broadcast system, PA system, CCTV system and warning system, ceiling speakers, public address speaker, compression driver, driver units for loudspeaker, sound column speakers, enforcement speakers, sound projectors, warning and security system for communities and heavy industrial environment, CCTV, CATV and MATV systems, wireless communication system, loudspeaker, horn speaker, high power siren, siren driver, outdoor warning.