1.active mini line array,loudspeaker,pro sound,pa system 2. ... good price 4.for church,concert hall RS series, Compact line array sound reinforcement systemTitanium tweeters used in this system ... which forms an integrated system.Model: RS-400 active mini line array, loudspeaker, pro sound, pa system ComponentLF: (8 ... /setGross Weight74/kg/set 4inch active mini line array,pro loudspeaker,PA system (RS-400)