I've been completely happy with my Motion Sound KP-200s for medium-size gigs. It takes the place of a PA and provides full stereo sound. Some gigs I do require even less sound reinforement and for those jobs I use powered JOB EON10 G2's. For outdoor gigs I use the KP-200s as my stage monitor and the EON10's plus EON subs so I have a fully scalable system. Most gigs I just use the KP-200s though.
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Jim Eshleman