Ok, so I recently acquired a Pioneer spec 1 preamp, a spec 4 amp. This is what I would like to do, I have 4 B & W speakers that are 8 ohm. I would like to run those parallel on the spec 1 preamp a & b terminals. I also have a set of cerwins that are 4ohm that I like to hear once in a while LOUD. so I read the manual from pioneer on Bi amp connection so here's my question. can I run the left-right speaker wires from the spec four to spec one Pre, connect 4 8 ohm speakers to A & B on spec one pre amp, and... connect another amp, a mcintosh mc2500 and then connect the 4 ohm cerwins to the amp? run both amps and all 6 speakers? or would I have to run all speaker wires directly to the amps? or what about using my sherwin hp2000 for the other amp, separating from its preamp??