I have been doing it this way with great results..... Most small gigs, up to about 125pp I use one Bose compact...med 150-250 I use the Bose Compact and one Mackie Thump powered 15" set on the floor hooked to the Bose external out...this acts like a Sub & adds plenty of bottom end for filling up the room, the Bose top pole hits the back of the room.... and for my bigger venues 300-500pp I hook up the Bose in the middle of the stage and add Two Mackie Thump powered 15"'s daisy chained on each side...the sound is incredible to say the least....crisp highs & super deep lows to make em dance.All bases covered all lightweight.