In a perfect world, I would use monoblocks behind or adjacent to the speakers (on the floor), using very short runs of speaker cable. Other electronics on the near side will or on the rear wall, behind your seat, connected to the monoblocks via good quality (but not necessarily expensive) XLR balanced cables. I agree with Buconero117, it would be great to get the the TT(s) out of the room but I doubt that many of us can do that. I settle for putting turntables as far away from the speakers as possible, preferably behind some other gear.