I use it for about 5 years. It is coupled to a rs152x for 3 years. (No problem since that time yet they come 30fois per year) Being in a group I have to try a pair of speakers montarbo system db 2.1 technologies, system two subs and two heads rcf. I use the front for less than 200 people and in return for huge benefits. They are robust and reliable a really good sound quality but still lacks bass ... The value for money is good. With the experience of pregnant back I would do this choice, but for the front I plan to ramp up to medium prestas easily 300 people.