We're thinking of upgrading our PA. I figure we should get powered speakers first, and then replace the mixer later. I'm wondering if this would work: Current: Mixer/Amp: Peavey XR600G Monitors: a little crappy Kustom monitor Mains: Peavey PR10 passive (x2) Next step: Mixer/Amp: Peavey XR600G Monitors: Peavey PR10 passive (x2) Mains: two QSC K12 powered speakers If you look at pages 8-10 of the XR600G manual, the description for item 31 says "Main Output: This 1/4" jack provides a signal from the main system mix after the graphic EQ. This is used primarily to feed an auxiliary amplifier/speaker system." So would I connect one K12 to the Main Output on the Peavey and then daisy chain the 2nd K12 from there? Or would I need a Y-cable of some kind?