Thanks to all of you: Philbrady: Yes, the 6900 is plugged into the wall. I have HSU subs hooked up to my pre-outs. Tigermtn: these speakers are not biwirable as other Def Techs have been. els@hats.com: they are definitely wired in phase. Pmotz: Speaker placement is limited to moving them closer to the wall or closer to the corners or both. I've tried both. There are not other options; it's a small family room.
This evening I re-inserted a JPS AC+ PC that I had re-cooking on a dehumidifier. Removed the Flavor4 from the 6900. The AC+ immediately added more bass to the system- I thought it was fully burned when I first used it. Apparently not. I want to see what happens once it settles in. But for the 1st. time I heard a real improvement in bass from that cord after a lot of previous use.
This evening I re-inserted a JPS AC+ PC that I had re-cooking on a dehumidifier. Removed the Flavor4 from the 6900. The AC+ immediately added more bass to the system- I thought it was fully burned when I first used it. Apparently not. I want to see what happens once it settles in. But for the 1st. time I heard a real improvement in bass from that cord after a lot of previous use.