I use the SRM 450 for two years and I find that the favorable opinions, Attributes this forum, are a little EXAGRES insofar as you must know that this one does not have a crystal clear sound plutt but aggressive in the treble and mdium ds that the "push" a bit. Moreover, on 4 speakers, two dj t "out". Good forum for all small venues, but especially not in collection outdoor.
PRS 900 for such a forum so I parat EXAGRES .....