I do not know PA systems so I'm looking for some help. I'm older than the original old Bose speaker and equalizer system I now have. I am going to be using it and need to know how to set it up. I also have a XR 560 Powered Mixer (mono)by Peavy. Bose manual tells me to connect the equalizer as if it were an external echo device, if there is an echo gain to turn it all the way up. That this insures that most of the signal is sent out through the equalizer before it passes through the power amplifier stage. Question, where do I connect it? the PA Head has 5 inputs a another 1/4 jack for CD player, tape deck etc. Can someone who knows what to do please inform me. Thanks